#myfloat

[oswednesday]

when your floaters glow with an incandescent light at the ends #myfloaters

[newwaveswimbuoy]

Credit to @train_for_success_coaching : A few of the Train for Success athletes heading out with Doug for a 4000m open water swim. Again safety is a big part of the training. Every athlete has a safety bag attached and a support crew kayaker/photographer for this training session. Successful training includes staying safe. 🏊🏻♂ 🚴🏻♂ 🏃♂ posted on Instagram - https://newaveswim.com/2Xznh2v

[bwellbhappy]

Loving #myfloating bar! #whatfloatsyrboat (at Cape Girardeau, Missouri) https://www.instagram.com/p/ByL2WVGH8f9YXp2DYlcyDY8WzuQSz0SyekmB6g0/?igshid=zo08b92bratn

[youzicha]

☕️ haskell extensions (particularly interested in RankNTypes and ImplicitParams)

I should say that I’m not a very advanced or experienced Haskell programmer! After some grepping, I think the biggest list of extensions I’ve used in a real project was

{-# LANGUAGE ViewPatterns, TypeSynonymInstances, ExistentialQuantification, NamedFieldPuns, ParallelListComp, FlexibleContexts, ScopedTypeVariables, TupleSections, FlexibleInstances #-}

which doesn’t seem very fancy. I’ve never been tempted to use ImplictParams, but I also haven’t worked on many projects.

As for RankNTypes, I guess I do have some thoughts. First, a while ago I came across an article OCaml Language Sucks, written by a Lisp programmer, and I was amused to see that one of his first complaints was that it doesn’t have higher-rank polymorphism:

e.g. the following code does not work: type t = MyInt of int | MyFloat of float | MyString of string let foo printerf = function  | MyInt i -> printerf string_of_int i  | MyFloat x -> printerf string_of_float x  | MyString s -> printerf (fun x -> x) s

because the first statement makes OCaml think that printerf has type (int -> string) -> int -> 'a instead of the correct ('a -> string) -> 'a -> 'b. (Yes, there are many workarounds, which make the problem look even more ugly).

In the the statically-typed world I feel it’s commonly assumed that Hindley-Milner is basically good enough, and that anything more than prenex-polymorphism is esoteric, but this guy apparently got burnt by it at least twice in his first year of OCaml programming.

Second, any time anybody mentions type inference for higher-ranked types I kindof flinch and feel inadequate, because I’ve tried to read various papers about the different inference algorithms, and I always have to give up halfway through. I still have no idea what GHC will actually do if you turn on the extension, and I now have some learned helplessness about the entire topic.

But third, I also suspect that trying to infer these types in the first place is just a bad idea! I do more programming in Coq than in Haskell, and the story there is simple: the programmer always needs to write explicit forall-quantifiers in the types and type-lambdas in the code, and it will make a best effort to infer type arguments using unification (but sometimes you need to write those explicitly too). And that’s absolutely fine! I’ve never felt that this is a big burden, and it means that polymorphism just works without any surprises at all. I feel Haskell is taking a simple thing (System F), and sticking an amazingly complicated Rube Goldberg contraption in front of it, and we could just... not do that...

[nenytan]

Repost from @orias_matracok_uszogumik @TopRankRepost #TopRankRepost @lolapatridge #pegazusmatrac #pegasusfloat #poolparty #bikinimodels #summerbody #hungariangirl #beachgirls #medence #myfloat #unicorn #pegazus #aranyszarnyupegazus #bikini #swimsuit #luxury #debrecen #fit #perfect #oriasmatrac #huninsta #instagold ======================================== Rent / sell floaties Bali Area ( We Deliver to your place ) free delivery for - Denpasar Area (other area delivery please contact us) ======================================== For inquiry please contact : Whatsapp/call : 082236436798 Line : @dui6989b 🌸 ======================================== #float #floaties #floatiesmurah #floatiesjakarta #floatiesbali #floatiespegasus #floatiesunicorn #floatiesfordays #floatiessummer #floatiesimpor #floatiesjumbo #floatiesrent #bali #bali🌴 #baliindonesia #balibody #baliholiday #pelampung #pelampungmurah #pelampungrenang #rentalfloat #rentalfloatbali #poolparty #ubud #kuta #sewafloatiesmurah #sewafloatiesmurahbali #sewafloatiesbali #rentfloatbali #rentfloat

[innovationspiner]

Tiny thief cool math games

#Tiny thief cool math games license key

Please correct me in the comments if I'm not explaining it correctly. Within this method myFloat gets set to x. "x=> myFloat = x" creates a new (delegate) method that returns a method with a parameter, in this case called x. Use Unity to build high-quality 3D and 2D games, deploy them across mobile, desktop, VR/AR, consoles or the Web, and connect with loyal and enthusiastic players and customers.Unity Plugins. Unity is the ultimate game development platform. Using this software, you can manage your servers, and after starting your game, its web-based tools help you to maintain and.

#Tiny thief cool math games license key

Unity Pro License Key is the latest comprehensive program which is specially designed to provide hosting, multiplayer features and networking to create your multiplayer games online. The locking tab and QD cups seem to be made of steel.The M1 Pro and M1 Max, however. The bipod cuts in the forearm are deeper so the bipod legs hug tight to the forearm. Its been quite a while since wide G3 forearms have been available. Pro Tools Apple Silicon M1 Notes: Video Hardware is now supported on M1 Macs with Qualified drivers Pro Tools System Usage CPU count on M1 Macs Product Review: AC Unity is absolutely killin it by listening to the market and what people want.

Pro Tools 2021.6 and later supports M1 on 2021.10 Pro Tools | HD Native Hardware andPro Tools | HDX Hardware supported0 Pro Tools | Carbon, 2021.6 and later.

[bookstore-allornothing]

_ ⠀ 날씨 탓이려니 합니다. 가을장마라고도 불리는 이것은 사람을 먹먹하게 합니다. 별 이유 없이 처진 몸은 마음마저 처지게 합니다. 뭐, 이럴 땐 책이죠. 욕심껏 책을 읽습니다. 영양분처럼 스며듭니다. 참 좋습니다. ⠀ 비도, 구름도, 바람도 결코 마음대로 되지 않는데 어째서 "비 한번 시원스럽게 내리는군." 하고 말하지 못하는가. ⠀ 알랭 / 날마다 행복해지는 225가지 이야기 중 _ ⠀ #아무날의비행일지 / 오수영 @myfloating 에세이, 고어라운드 / '사이'가 존재한다. 승무원과 작가, 그 사이로운 사이를 말하는 책이다. 스스로 만든 출판사의 이름조차 비행 용어다. 경과에 따라 무뎌지는, 혹은 날카로워지는 모든 수간을 잡아둔다. 하늘에서의 일도, 땅에서의 일도 그리 중요하지 않다. 기내에서 시를 쓰고 있던 이가 깊은 인상을 주듯 어느 결에 고어라운드 하다. 안전한 착륙이 될 그 '사이'를 위한 책이라 염두한다. ⠀ 『아무 날의 비행일지』는 『깨지기 쉬운 마음을 위해서』 『순간을 잡아두는 방법』 『우리는 서로를 모르고』 등의 에세이로 많은 독자들의 사랑을 받은 오수영 작가의 신작이다. 작가는 이번 책을 통해 항공기 승무원이라는 본업과, 작가라는 오랜 꿈 사이에서 중심을 잃지 않으려는 내면의 방황을 꾸밈없이 솔직하게 풀어낸다. 현실과 꿈 모두를 끌어안고 싶지만, 때로는 일상이 버거워 전부 내려놓고 싶기도 한 양가감정. 그것은 이 시대 평범한 직장인의 웃음 뒤에 숨겨진 이면이 아닐까. 날마다 만남과 작별이 가득한 환경 속에서 그는 어떤 시선으로 사람을 바라볼까. 이상과 일상의 경계에서 습관처럼 발을 헛딛는 그는 어떤 태도를 통해 삶의 균형을 지켜낼 수 있을까. ⠀ #새의심장 / 마르 베네가스 글 | 하셀 카이아노 그림, 오후의 소묘 @sewmew / 한 시인의 추천사로 대신한다 : 시인은 어떻게 탄생하는가. 이 아름다운 그림책은 말한다. 한 사람의 죽음이 그를 관통하던 날, 그는 새로운 이름을 얻고 시인으로 다시 태어났노라고. 그렇다면 시는 어디서 오는가. 이 아름다운 그림책은 말한다. ‘새의 심장’ 없이는 그 어떤 시도 완성될 수 없다고. _ 안희연 시인 ⠀ 시와 사랑이 탄생하는 작은 떨림의 순간들 ⠀ 시는 무엇일까? 시인은 어떻게 탄생할까? 바닷가에서 태어나 바다의 말을 먼저 배운 소녀가 세상을 알아가는 아름다운 모험. 시인의 심장을 지닌 소녀 나나는 시와 시의 마음을 찾아 도시로, 숲으로 떠난다. 남다른 호기심, 때 이른 이별, 애틋한 우정, 자유로운 영혼으로 빚어진 삶은 나나로 하여금 마침내 시와 사랑을 발견하게 할 것이다. 나나는 그 작은 떨림의 순간들을 놓치지 않고 ‘새의 심장’이라는 이름의 책으로 엮어 우리에게 전한다. 안희연 시인은 “‘새의 심장’ 없이는 그 어떤 시도 완성될 수 없다고”, 또 “누구에게나 있다”라고 썼다. 그렇다면 시와 사랑의 탄생에 대한 이 이야기를 읽는 것은 그동안 잊고만 있던 나의 작은 ‘새의 심장’을 깨우는 일일지 모른다. ⠀ #마음의지도 / 추억의 장소들, 그곳에 깃든 기억들이 아이의 걸음마다 내 마음에 지도를 그려낸다. ⠀ #빛이사라지기전에 / 한 줌의 빛 그것만으로 충분하다고 생각했다. _ ⠀ 날씨 탓은 그만하렵니다. 아직 인생의 방학 중이라고 생각하렵니다. 사실 이른 오후부터 졸리기 시작했거든요. ⠀ #독산책방 #독립서점 #독립책방 #올오어낫싱 #독립출판 #개성출판 #독립출판물 #책스타그램 #북스타그램 #서점스타그램 #책방스타그램 #신간소개 #볼만한책 #무조건봐야할책(올오어낫싱에서) https://www.instagram.com/p/CTB-jIIFYmE/?utm_medium=tumblr

[screechingtacohandswagon]

Beberapa Jenis Coding Arduino

1. Int (Integer)      Integer adalah tipe data utama Anda untuk penyimpanan angka. Pada Arduino Uno (dan board berbasis ATmega lainnya) sebuah int menyimpan nilai 16-bit (2-byte). Ini menghasilkan kisaran -32.768 hingga 32.767 (nilai minimum -2 ^ 15 dan nilai maksimum (2 ^ 15) - 1). Pada papan berbasis Arduino Due dan SAMD (seperti MKR1000 dan Zero), sebuah int menyimpan nilai 32-bit (4-byte). Ini menghasilkan kisaran -2.147.483.648 hingga 2.147.483.647 (nilai minimum -2 ^ 31 dan nilai maksimum (2 ^ 31) - 1). 

Contoh kode : int countUp = 0;            // membuat integer variabel yang disebut 'countUp'' void setup() {  Serial.begin(9600);       // gunakan port serial untuk mencetak nomor } void loop() {  countUp++;                // Menambahkan 1 ke int countUp di setiap loop  Serial.println(countUp);  // mencetak status countUp saat ini  delay(1000); //jeda selama satuan detik

}

2. Long (Long)      Variabel panjang adalah variabel ukuran diperluas untuk penyimpanan angka, dan menyimpan 32 bit (4 byte), dari -2.147.483.648 hingga 2.147.483.647. Jika melakukan matematika dengan bilangan bulat, setidaknya salah satu angka harus diikuti oleh L, memaksanya menjadi panjang. Syntax : long var = val; Parameter : var : nama variabel val : nilai yang diberikan ke variabel Contoh kode : long speedOfLight = 186000L; ); digitalWrite(switchPin, HIGH);  // nyalakan pullup resistor } void loop() { if (digitalRead(switchPin) == LOW) { // saklar ditekan – pullup menjaga pin tetap tinggi secara normal delay(100);                      // tunda ke saklar tolak running = !running;                // toggle running variable digitalWrite(LEDpin, running);  // menunjukan melalui LED  } }

3. Float (Float)      Tipe data untuk angka floating-point, angka yang memiliki titik desimal. Angka floating-point sering digunakan untuk memperkirakan nilai analog dan kontinu karena mereka memiliki resolusi lebih besar daripada bilangan bulat. Angka floating-point bisa sebesar 3.4028235E + 38 dan serendah -3.4028235E + 38 Mereka disimpan sebagai 32 bit (4 byte) informasi. Syntax : float var = val; Parameter : var : nama variabel  val : nilai yang anda tetapkan untuk variabel itu Contoh program : float myfloat; float sensorCalbrate = 1.117; int x; int y; float z; x = 1; y = x / 2;          // y mengandung 0, sekarang tidak dapat menyimpan pecahan z = (float)x / 2.0; // z sekarang berisi .5 (anda harus menggunakan 2.0 bukan 2) float x = 2.9; // variabel tipe float int y = x;  // 2 Jika, sebaliknya, Anda ingin membulatkan selama proses konversi, Anda perlu menambahkan 0,5: float x = 2.9; int y = x + 0.5;  // 3 atau gunakan fungsi round (): float x = 2.9; int y = round(x);  // 3

      Matematika floating point juga jauh lebih lambat daripada matematika integer dalam melakukan perhitungan, jadi harus dihindari jika, misalnya, loop harus dijalankan dengan kecepatan tinggi untuk fungsi timing kritis. Pemrogram sering berusaha keras untuk mengubah perhitungan floating point ke integer matematika untuk meningkatkan kecepatan.

[kagaya25]

Floating-Point Types - C Language Basics

Floating-Point Types – C Language Basics

Introduction

The floating-point types can store real numbers with different levels of precision.

#include <stdio.h> int main() { float myFloat; /* ~7 digits */ double myDouble; /* ~15 digits */ long double myLD; /* typically same as double */ }

A float can accurately represent about 7 digits.

A double can handle around 15 of them.

#include

[100codedays]

Variables and Data types

int myVariable;

myVariable = 5;

the variable myVariable is created.

The value 5 is then saved there.

Variable types:

boolean myBoolean = true;  Logic values(Boolean Values): true or false

int MyInteger = 7;  Integers: e.g. 50, -384

float myFloat = -3.219;  Floating point value: e.g. 0.02, -73.2, 80.0

char myClar = ‘A’;  A single charactere.g. ‘a, ‘A’, ‘9′, ‘&’

String myString = “This is a text.”;  Character string/text:e.g. “Hello World”

[javatutorialsbytravismix]

Variables

Variables are probably one of the most important concepts in programming.  Variables are probably the one thing in programming that you will use more than anything else.  So what are these variable things?  Variables are used to store values in memory so that you can access them later.  There are many different types of variables so lets get to them.  

The first variable type is int which lets store whole numbers.  Next we have float and double which let you store numbers with decimals.  A float is less precise than a double but also uses less memory however for most cases you can get by just fine with double as we have plenty of memory these days to work with.  The two other important variable types are String and boolean.  String lets you store strings of characters or words, but must be wrapped in double quotes ” “ The boolean type stores true or false. There is also the char type which stores a single character.

So lets take a look at how to use these variables.  Create a new Java project and find the main function.  As a reminder main is the code that looks like 

public static void main(String[] args) {

}

Inside of the main function place the following code.

int myInt = 5; // I am an integer and store whole numbers float myFloat = 3.2f; //I am a float and store numbers containing decimal points

double myDouble = 3.25; // I am a more precise version of float

 String myString = "Hello, World"; // I store strings of characters

boolean isBoolean = true; //I store true or false only

char myChar = 'c'; // I store single characters

You probably noticed that the float value has an f at the end before the semi colon.  You can use either lowercase or uppercase f but the f is required in Java to let it know that it is a float.  So now we have these variables and have initialized them (given them a starting value) what can we do with them?

Try adding the following code inside of main after your variables and running your code to see what happens.

System.out.println(myInt); System.out.println(myFloat); System.out.println(myDouble); System.out.println(myString); System.out.println(isBoolean); System.out.println(myChar);

Ok while that was interesting we can also change the value stored inside a variable at anytime by simply writing something like...

myFloat = 54.3f; 

To see what this does go ahead and have your program output myFloat after the previous code inside main using System.out.println  What you will notice is that the new output is 54.3  Another useful thing that you can do is with Strings.  Try the following code out.

System.out.println(myString + ", Travis");  What this code does is it concatenates ( adds together) the value stored in myString and “, Travis” so that you can output the whole thing.  Another useful thing you can do is

 myString = "Your number is: " + myInt;

now when you run System.out.println(myString); your output should be Your number is: 5 

You can even combine this all together inside the System.out.println function as follows

String myNewString = "Hello, "; String name = "Travis"; System.out.println(myNewString + name + " your number is: " + myInt);

Your output should be Hello, Travis your number is: 5

Your challenge for today is to keep messing with variables and coming up with your own things like what we have done above.  The best way to find out what works and what doesn’t work is to try things out.  The worst you will do is make a program that doesn’t work.  If something doesn’t work try reading the error output and seeing if you can figure it out and how to fix it.

Extra Reading

Java Variables https://docs.oracle.com/javase/tutorial/java/nutsandbolts/variables.html

https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html

[oswednesday]

me and my floaters #myfloaters

[t-baba]

Kotlin From Scratch: Variables, Basic Types, and Arrays

Kotlin is a modern programming language that compiles to Java bytecode. It is free and open source, and promises to make coding for Android even more fun.

Kotlin is 100% interoperable with Java. In other words, it can be used together with Java in the same project. So you can refactor parts of your Java code to Kotlin and it won't break. In addition to that, it is concise, expressive, and has great tooling. Kotlin can be used on the back-end (server-side), but it's getting a lot of attention right now as a language for Android app development. Kotlin is now supported by Google as a first-class language for Android development, so the popularity of Kotlin is set to explode! 

In this first tutorial in the Kotlin From Scratch series, you'll learn about the language basics: comments, variables, simple types, arrays, and type inference. 

Prerequisites

To follow along with me, you will need the Kotlin plugin on Android Studio. Alternatively, you could use the online playground or IntelliJ IDEA Community Edition. 

1. Variables

In Kotlin, use val to declare a constant or var keywords to declare a variable. You can specify a type such as String or Int after the variable name. In the example below, we declared a constant firstName of type String with the val keyword.

val firstName: String = "Chike"

But you'll soon realize that in Kotlin, it's often possible to omit the type from the declaration and the compiler won't complain. 

val lastName = "Mgbemena" // will still compile

In the code above, you'll observe that we did not explicitly state the type String. The code above will still work because the compiler has implicitly inferred the type using type inference. We'll come back to this! 

The difference between the val and var keywords is that the former is immutable or read-only (its value cannot be changed), while the latter is mutable (its value can be changed). 

val dateOfBirth = "29th March, 1709" dateOfBirth = "25th December, 1600" // cannot be changed var car = "Toyota Matrix" car = "Mercedes-Maybach" // can be changed

Note that for a variable declared with the var keyword which has its type inferred by the compiler, assigning another value of a different type won't work. In other words, the value of the variable can change, but its type cannot! For example:

var age = 12 age = "12 years old" // Error: type mismatch

It is highly recommended that you start by making your variables immutable by declaring them with the val keyword, so as not to maintain too many states. This makes your code safer for multithreading, because it ensures your variables cannot be modified by other threads unexpectedly.

Another thing you should know about the val keyword is that you can declare it with a type only and assign it a value later. But you can still only assign a value once.

val carName: String carName = "Toyota Matrix" // will compile

In Java, it's possible to declare multiple variables of the same type on a single line, but this doesn't work in Kotlin. In Kotlin, all variable declarations must be on their own lines. 

val carName = "BMW", streetName = "Oke street" // this won't compile // this will compile var carName = "BMW" var streetName = "Oke street"

2. Type Inference or Deduction

Kotlin is a strongly typed language that supports type inference or deduction. This is the mechanism employed by the compiler to find out types from context. Java doesn't have a type inference mechanism, which means you must explicitly declare the type of every function or variable. Type inference helps reduce the boilerplate code you have to write. 

val country = "Nigeria" // type is inferred by compiler val code = 234

The code above would compile even though we did not explicitly state the type for the variable country. The compiler is smart enough to know that the country is of type String, because the value, "Nigeria", is a string.  

3. Basic Types

In Java, we have two types of type—primitive (e.g. int, long, boolean, byte, char, etc.) and reference types (e.g. array, String). Java uses wrappers (like java.lang.Integer) to make primitive types behave like objects. But in Kotlin, there is no such distinction. Instead, all types are objects. 

Numbers

The integer types available in Kotlin are:

Long—64 bit

Int—32 bit

Short—16 bit

Byte—8 bit

The floating-point types are: 

Double—64 bit

Float—32 bit

val myInt = 55 val myLong = 40L val myFloat = 34.43F val myDouble = 45.78 val myHexadecimal = 0x0F val myBinary = 0b010101

You can observe that we created a Long literal by adding the suffix L, and for Float we added the suffix F or f.  Numbers can also be written in hexadecimal notation using the 0x or 0X prefix and in binary using the 0b or 0B prefix. Note that in all these cases, Kotlin can use type inference to know the type we want instead.

val myLong = 19L val myLongAgain: Long = 40

To convert a number from one type to another, you have to explicitly invoke the corresponding conversion function. In other words, there is no implicit conversion between types of numbers. 

val myNumber = 400 val myNumberAgain: Long = myNumber // throws Error: Type mismatch

Each number type has helper functions that convert from one number type to another: toByte(), toInt(), toLong(), toFloat(), toDouble(), toChar(), toShort().

val myInt = 987 val myLong = myInt.toLong()

In the code above, we are converting from an integer to a long. We can also do the reverse by using the method toInt() on the long variable. Note that this will truncate the value to fit the smaller size of an Int type if need be—so be careful when converting from larger types to smaller ones! 

You can also convert a String into a number type.

val stringNumber = "101" val intValue = stringNumber.toInt()

In the code above, we converted the variable stringNumber into an Int type by calling the method toInt() on the variable. We can write this more succinctly by instead calling the method directly on the string:

val intValue = "101".toInt()

The Boolean Type

The Boolean type in Kotlin is the same as in Java. Its value can be either true or false. The operations disjunction (||), conjunction (&&), and negation (!) can be performed on boolean types, just like Java. 

val myTrueBoolean = true val myFalseBoolean = false val x = 1 val y = 3 val w = 4 val z = 6 val n = x < z && z > w // n is true

Strings

Strings can be created with either double quotes or triple quotes. In addition to that, escape characters can be used with double quotes. 

val myString = "This is a String" val escapeString = "This is a string with new line \n"

To create a string that spans multiple lines in the source file, we use triple quotes:

val multipleStringLines = """ This is first line This is second line This is third line """

Kotlin also supports string interpolation or string templates. This is an easier way to build dynamic strings than concatenation, which is what we use in Java. Using string templates, we can insert variables and expressions into a string. 

val accountBalance = 200 val bankMessage = "Your account balance is $accountBalance" // Your account balance is 200

In the code above, we created a string literal, and inside it, we referred to a variable by the use of a $ character in front of the variable name. Note that if the variable is not correct or doesn't exist, the code won't compile. 

What about if you need to use $ in your string? You just escape it with \$! Also, you can call methods from an interpolated String directly; you have to add curly braces ${} to wrap it. 

val name = "Chike" val message = "The first letter in my name is ${name.first()}" // The first letter in my name is C

Another cool thing you can do is to perform some logic inside the curly braces when creating a String literal. 

val age = 40 val anotherMessage = "You are ${if (age > 60) "old" else "young"}" // You are young

Arrays

In Kotlin, there are two main ways to create an array: using the helper function arrayOf() or the constructor Array(). 

The arrayOf() Function

For example, let's create an array with some elements using arrayOf().  

val myArray = arrayOf(4, 5, 7, 3)

Now, to access any of the element, we can use its index: myArray[2]. Note that we can pass in values of different types into the arrayOf() as arguments and it will still work—it will be an array of mixed type. 

val myArray = arrayOf(4, 5, 7, 3, "Chike", false)

To enforce that all the array values have the same type, e.g. Int, we declare a type by calling arrayOf<Int>() or intArrayOf().

val myArray3 = arrayOf<Int>(4, 5, 7, 3, "Chike", false) // will not compile val myArray4 = intArrayOf(4, 5, 7, 3, "Chike", false) // will not compile

We also have other utility functions to create arrays of other types such as charArrayOf(), booleanArrayOf(), longArrayOf(), shortArrayOf(), byteArrayOf(), and so on. Behind the scenes, using these functions will create an array of their respective Java primitive types. In other words, intArrayOf() will compile to the regular Java primitive type int[], byteArrayOf() will be byte[], longArrayOf() will be long[], and so on. 

The Array() Constructor

Now let's see how to create an array with Array(). The constructor of this class requires a size and a lambda function. We'll learn more about lambda functions later in this series, but for now, just understand that it is a simple, inline way of declaring an anonymous function. In this case, the job of the lambda function is to initialize the array with elements. 

val numbersArray = Array(5, { i -> i * 2 })

In the code above, we passed 5 as the size of the array in the first argument. The second argument takes in a lambda function, which takes the index of the array element and then returns the value to be inserted at that index in the array. So in the example above, we created an array with elements 0, 2, 4, 6, and 8.

4. Comments

This is an easy one. In Kotlin, comments are just the same as in Java. We can use either block or line comments:

/* hello, this is a block comment with multiple lines. This is another line. This is another one again */ // this is a single line comment

Conclusion

In this tutorial, you learned the basics of the Kotlin programming language: variables, basic types, type inference, arrays, and comments. In the next tutorial in the Kotlin From Scratch series, you'll learn about loops, ranges, conditions, collections, and packages in Kotlin. See you soon!

To learn more about the Kotlin language, I recommend visiting the Kotlin documentation. Or check out some of our other Kotlin tutorials here on Envato Tuts+.

Android SDK

Quick Tip: Write Cleaner Code With Kotlin SAM Conversions

Ashraff Hathibelagal

Android Studio

Coding Functional Android Apps in Kotlin: Getting Started

Jessica Thornsby

Android SDK

Java vs. Kotlin: Should You Be Using Kotlin for Android Development?

Jessica Thornsby

by Chike Mgbemena via Envato Tuts+ Code http://ift.tt/2wP7P0v

[bookstore-allornothing]

_ <어쩐지 가장 친근한 책이 된. 정말 다양한 유언이 있구나 싶다. 이 책은 소위 책으로 만든 '유언 모음집'이다. 유언의 아카이빙. 누가 시킨 일은 아니겠지만 꽤나 정성 들여 책이 되었다. 비록 죽기 직전에 완성된 유언은 아닐지언정 훗날을 예비한, 58인의 진지한 유언이 담겨 있다. 죽음이 우리 뜻은 아니지만 날길 말 정도는 뜻할 수 있기에...나름 '기념비'적인 출판물이라 하겠다. 천천히 들여다보면 무척 뜨거운 책, 이 계절의 '연탄같은 책'이다. > 📎 #유언으로나마유언으로남아 글 쓰고 모은 이 #유야 작가 @yooya0714 from. #지구불시착 / 오늘 밤 진지 빨며 유서 한 장 써볼까.한다. 어쩌면 수십장이 될 지도. _ <물론 우리는 서로를 모르고. 알아가야 할 의무도 없다. 그러나 여기 알아갈 만한 책은 있다. 내밀지 않는 손으로 청하는. 이것은 '확신할 수 있는 신념'이지만 <불 특정한 타인에게로 향함>이 아닌 바로 <너에게로 향함>이다. 모른다는 '무지의 선상'에서 겨누는 교류, 이는 문장. 비록 서로를 모르지만 글 몇 마디는 건넬 수 있다는. 책은 비로소 말한다. 내가 당신에게 다가갑니다. 모르고 모르지만 그렇다고 해서 특별할 건 없기에. 어찌 보면 무척이나 매너 있는 책. <우리는 비록...서로를 모르지만>. 아는 것은 특별한 것이 아니고, 모르는 것은 특별한 일이기에. 이제 가만히 책에 연결하게 되리니. 놀랍게도 이 계절을 빚을 탕감할 한 권의 책이리라.> #우리는서로를모르고 어쩌면 뉴페이스? #오수영 작가 @myfloating 의 두 번째 책. 두 번째부터는 거칠 것이 없네. 비록 내 당신을 모르지만서도. _ 이상 온오프 #올오어낫싱 입고 완룝! _ 오늘 특기할 사항? 1) 아직도 #죽떡 이 나간다? 2) 지난 주와 이번 주... 경애하는 고 #허수경 시인의 책이 무려 여섯 권 나갔네요. #내영혼은오래되었으나 #누구도기억하지않는역에서 #혼자가는먼집 #빌어먹을차가운심장 등등. 오늘 글지마 @geuljima 군(?)은 신선한 쇼크. 😵👍 살다살다 그녀의 시집이 이리 잘 나갈 줄이야... _ 추워서...여기까지만. . . . . #독산책방 #올오어낫싱 #책스타그램 #북스타그램 #독립서점 #독립책방 #독립출판 #개성출판 #서점스타그램 #책방스타그램 #북코멘터리 #북코멘터리책방 #춥다 #책방은안추운데 #내일도입고소개는계속된다(올오어낫싱에서) https://www.instagram.com/p/BrXbczXAm3I/?utm_source=ig_tumblr_share&igshid=r9gbkxc3si8l

[reasonableapproximation]

Oh, interesting. To check I understand you… In Haskell, I think you’d have to enable RankNTypes and also give a type signature to that function:

type T = MyInt Int | MyFloat Float | MyString String

foo :: (forall a . (a -> String) -> a -> b) -> T -> b

foo printerf t = case t of

. MyInt i -> printerf intToString i

. MyFloat f -> printerf floatToString f

. MyString s -> printerf id s

(That might be the best I can get tumblr to format it. Wtf.)

But then when you call it, it infers the type you call it at. So you could do foo (\show arg -> (len (show arg), show arg)) and it would figure out that the argument has type forall a . (a -> String) -> a -> (Int, String) and the result has type T -> (Int, String). And the way it does that is kind of magical.

You’re saying that in Coq, you’d declare the function in more or less the same way; but when you call it, you’d have to explicitly specify the type you’re calling with?

(ImplicitParams seems to be barely used. GHC’s callstacks are implemented with them, but that’s explicitly an implementation detail not to be relied on. Other than that I don’t think I’ve seen them in the wild.)

☕️ haskell extensions (particularly interested in RankNTypes and ImplicitParams)

I should say that I’m not a very advanced or experience Haskell programmer! After some grepping, I think the biggest list of extensions I’ve used in a real project was

{-# LANGUAGE ViewPatterns, TypeSynonymInstances, ExistentialQuantification, NamedFieldPuns, ParallelListComp, FlexibleContexts, ScopedTypeVariables, TupleSections, FlexibleInstances #-}

which doesn’t seem very fancy. I’ve never been tempted to use ImplictParams, but I also haven’t worked on many projects.

As for RankNTypes, I guess I do have some thoughts. First, a while ago I came across an article OCaml Language Sucks, written by a Lisp programmer, and I was amused to see that one of his first complaints was that it doesn’t have higher-rank polymorphism:

e.g. the following code does not work:type t = MyInt of int | MyFloat of float | MyString of stringlet foo printerf = function | MyInt i -> printerf string_of_int i | MyFloat x -> printerf string_of_float x | MyString s -> printerf (fun x -> x) s

because the first statement makes OCaml think that printerf has type (int -> string) -> int -> ‘a instead of the correct (‘a -> string) -> 'a -> 'b. (Yes, there are many workarounds, which make the problem look even more ugly).

In the the statically-typed world I feel it’s commonly assumed that Hindley-Milner is basically good enough, and that anything more than prenex-polymorphism is esoteric, but this guy apparently got burnt by it at least twice in his first year of OCaml programming.

Second, any time anybody mentions type inference for higher-ranked types I kindof flinch and feel inadequate, because I’ve tried to read various papers about the different inference algorithms, and I always have to give up halfway through. I still have no idea what GHC will actually do if you turn on the extension, and I now have some learned helplessness about the entire topic.

But third, I also suspect that trying to infer these types in the first place is just a bad idea! I do more programming in Coq than in Haskell, and the story there is simple: the programmer always needs to write explicit forall-quantifiers in the types and type-lambdas in the code, and it will make a best effort to infer type arguments using unification (but sometimes you need to write those explicitly too). And that’s absolutely fine! I’ve never felt that this is a big burden, and it means that polymorphism just works without any surprises at all. I feel Haskell is taking a simple thing (System F), and sticking an amazingly complicated Rube Goldberg contraption in front of it, and we could just… not do that…