clayatlas

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[Flutter] How to Create SnackBar Message Component

[Flutter] How to Create SnackBar Message Component

We often use the SnackBar message component in Flutter Apps to display the remind messages. After all, it is difficult to use the print() function to interact with user, and it is also difficult for making a new widget for message displaying. (more…)

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[Solved][Flutter] flutter doctor --android-licenses Error: Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema ...

[Solved][Flutter] flutter doctor –android-licenses Error: Exception in thread “main” java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema …

Recently, I configured the Android Studio on Linux system for Flutter development, but I encounter the following error when using flutter doctor --android licenses command (It’s necessary). (more…)

[clayatlas]

[Linux] How to Turn Off the Beeping Sound of the Tab Key When Complete Command in Terminal

[Linux] How to Turn Off the Beeping Sound of the Tab Key When Complete Command in Terminal

Many people are troubled by the beeping sound when use tab key to auto-complete command.There are two types of beeping sounds, one is emitted by speaker or stereo, and other one is emitted by the host hardware device. (more…)

[clayatlas]

[Solved][Linux] add-apt-repository: command not found

[Solved][Linux] add-apt-repository: command not found

“add-apt-repository: command not found” is a common error about command not found, but we cannot complete it with search add-apt-repository or apt install add-apt-repository.In fact, we need to use sudo apt install software-properties-common to install. (more…)

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[Solved][Linux] No Wi-Fi Adapter Found - Make sure you have a Wi-Fi adapter plugged and turned on

[Solved][Linux] No Wi-Fi Adapter Found – Make sure you have a Wi-Fi adapter plugged and turned on

Recently I reinstall my Linux operating system. In the process of installation, I disconnected to my Wifi device. But before I reinstall it, the device connected to Wifi is very successful. (more…)

[clayatlas]

[Solved][Linux] Use APT Command Error in New System: "Media change: please insert the disc labeled ..."

[Solved][Linux] Use APT Command Error in New System: “Media change: please insert the disc labeled …”

Today I reinstalled Debian that is a famous Linux distribution, but I got an warning to remind me the device cannot detect the Wifi device in installation… I always encountered some new problem every time I install the system. (more…)

[clayatlas]

[Solved][Python] FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-build-8lcjii2e/PyQt5/setup.py'

[Solved][Python] FileNotFoundError: [Errno 2] No such file or directory: ‘/tmp/pip-build-8lcjii2e/PyQt5/setup.py’

Today when I configuring a new environment on new device (use pip3 install PyQt5), I got the following error message: (more…)

[clayatlas]

[Solved][Linux] UNetbootin Have No GUI on Gnome Environment

[Solved][Linux] UNetbootin Have No GUI on Gnome Environment

If you want to install another Linux distribution on Linux, sometimes we make the USB bootable flash drive with UNetbootin tool. (more…)

[clayatlas]

[Solved][Python] ModuleNotFoundError: No module named 'distutils.util'

[Solved][Python] ModuleNotFoundError: No module named ‘distutils.util’

ModuleNotFoundError: No module named 'distutils.util' (more…)

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[GitHub] How to Configure SSH Key

[GitHub] How to Configure SSH Key

The laptop I used for work burned out, so I reinstalled an old laptop. Of course I need to configure its environment before my work laptop repair, to survive the work required during this period. (more…)

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[Solved] Not in a hypervisor partition (HVP=0) (VERR_NEM_NOT_AVAILBLE). VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED)

I want to install a Linux distribution I never used with VirtualBox, and I got an error message in the installation: (more…)

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[Solved] Error: This requires the null safety language feature, which is experimental. You can enable the experiment using the '--enable-experiment=non-nullable' command line option.

[Solved] Error: This requires the null safety language feature, which is experimental. You can enable the experiment using the ‘–enable-experiment=non-nullable’ command line option.

Today I used the customize icon to create the button when I developing a mobile application with Flutter, I got an error message as follow: (more…)

[clayatlas]

[GitHub] How to Remove GitHub Specific Folder of Repository

[GitHub] How to Remove GitHub Specific Folder of Repository

After we pushing the project that we developed to GitHub repository, if we want to rename or remove a folder, we cannot rename and re-push. It will cause the old version folder still exist. (more…)

[clayatlas]

[Linux] Rename a Large Number of Files With “rename” Command (Regular Expression)

[Linux] Rename a Large Number of Files With “rename” Command (Regular Expression)

If we want to rename a large number of files in batches, in addition to writing script to use mv command, we can also use rename command to set a rule to match the file name (just like regular expression) to rename. (more…)

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[GitHub] Use "GitHub Readme Stats" to Show the Project Information on Your README

[GitHub] Use “GitHub Readme Stats” to Show the Project Information on Your README

If you want to make some changes to your personal page in GitHub, you can create a repository with the same name as account and add README.md to the repository. The README file will be show the top of the personal page. (more…)

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[C++] Use find() To Match the Substring in a String

[C++] Use find() To Match the Substring in a String

The string template in C++ STL is very convenient in processing strings. To record today is how to find the specific text or substring in a string data type variable. (more…)

[clayatlas]

[C++] How to Check The Variable Data Type with typeid()

[C++] How to Check The Variable Data Type with typeid()

In C++, we always can be clear about the data type of the variables we declared; however, sometimes we passed in some parameters from third-party libraries, so we are not so sure which data type it is. (more…)