#Swift coding programming プログラミング
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【swift】 Getting difference between two dates. 二つの日付の差
var timeDifference = firstDate.timeIntervalSinceDate(secondDate)
Use timeIntervalSinceDate.
This function will subtract secondDate from firstDate :D
timeIntervalSinceDateを使うと、firstDateからsecondDateを引いてくれます。
firstDateとsecondDateは自分で引きたい値をセットします;D
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