在 Swift 中检查空字符串? [英] Check empty string in Swift?

问题描述

在 Objective C 中，可以执行以下操作来检查字符串:

In Objective C, one could do the following to check for strings:

if ([myString isEqualToString:@""]) {
    NSLog(@"myString IS empty!");
} else {
    NSLog(@"myString IS NOT empty, it is: %@", myString);
}

如何在 Swift 中检测空字符串?

How does one detect empty strings in Swift?

推荐答案

现在有使用 .isEmpty 检测空字符串的内置功能:

There is now the built in ability to detect empty string with .isEmpty:

if emptyString.isEmpty {
    print("Nothing to see here")
}

Apple 预发布文档:"字符串和字符".

Apple Pre-release documentation: "Strings and Characters".

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