In Java, we've always been reminded to use myString.isEmpty() to check whether a String is empty. In Kotlin however, I find that you can use either myString == "" or myString.isEmpty() or even myString.isBlank().
对此有什么指导/建议吗？或者仅仅是"任何能震撼你船的事情"？
Thanks in advance for feeding my curiosity. :D
不要使用myString == ""，在java中，这将是myString.equals("")，这也不推荐使用.
isBlank和isEmpty不一样，这取决于你的用例.
isBlank checks that a char sequence has a 0 length or that all indices are white space. isEmpty only checks that the char sequence length is 0.
/**
* Returns `true` if this string is empty or consists solely of whitespace characters.
*/
public fun CharSequence.isBlank(): Boolean = length == 0 || indices.all { this[it].isWhitespace() }
/**
* Returns `true` if this char sequence is empty (contains no characters).
*/
@kotlin.internal.InlineOnly
public inline fun CharSequence.isEmpty(): Boolean = length == 0