验证NSString中是否存在单词 [英] Verify the existence of a word in an NSString

问题描述

我搜索了一下，但找不到这个问题的答案（可能很简单）。

I searched a bit, but couldn't find an answer to this (probably very simple) question.

我有一个NSString，我想检查它是否包含一个单词。像这样：

I have an NSString, and I'd like to check if it contains a word. Something like this:

NSString *sentence = @"The quick brown fox";
NSString *word = @"quack";
if ([sentence containsWord:word]) {
    NSLog(@"Yes it does contain that word");
}

感谢。

推荐答案

以下应该可以工作：

NSString *sentence = @"The quick brown fox";
NSString *word = @"quack";
if ([sentence rangeOfString:word].location != NSNotFound) {
    NSLog(@"Yes it does contain that word");
}

它使用 rangeOfString：返回 NSRange 结构，指示单词的位置，如果找不到它 NSRange.location 将等于 NSNotFound 。

It uses rangeOfString: to return an NSRange structure, indicating the location of the word, if it can't find it NSRange.location will be equal to NSNotFound.

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