为什么不是isEqualToString以我认为应该的方式工作？ [英] Why doesn't isEqualToString work the way I think it should?

问题描述

我正在将UTF-8编码的文本文件加载到数组中。在文本文件的几个地方有空行，没有空格。

I'm loading a UTF-8 encoded text file into an array. At several places in the text file there are blank lines, with no spaces.

在此条件中：

tempstring = [array objectAtIndex:index];
if( [tempstring isEqualToString:@""] == NO ) {
    // do something
}

结果始终为NO。我NSLog字符串，但我没有在空白行的控制台中看到任何字符。 NSLog还显示长度为1的空白行。

The result is always NO. I NSLog the strings, but I don't see any character in the console on the blank lines. The NSLog also shows the blank lines having the length of 1.

如何更正此条件才能生效？

How can I correct this conditional to work?

推荐答案

尝试从NSArray中删除NSString中的空格，然后再进行比较。请参阅此处：将空白区域的序列折叠为单个字符和修剪字符串

Try removing the whitespace from the NSString from the NSArray before comparing it. See here: Collapse sequences of white space into a single character and trim string

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