如何大写Objective-C中句子的第一个单词？ [英] How to capitalize the first word of the sentence in Objective-C?

问题描述

 我已经找到了如何大写字句的所有字词，但不是第一个字。 txt = @hi my friends！ 
 [txt capitalisedString]; 
  

我不想改为小写，大写第一个字符。

解决方案

这里是另一回事：

  NSString * txt = @hi my friends！ 
 txt = [txt stringByReplacingCharactersInRange：NSMakeRange（0,1）withString：[[txt substringToIndex：1] uppercaseString]]; 
  

对于Swift语言：

  txt.replaceRange（txt.startIndex ... txt.startIndex，with：String（txt [txt.startIndex]）。capitalizedString）
  

I've already found how to capitalize all words of the sentence, but not the first word only.

NSString *txt =@"hi my friends!"
[txt capitalizedString];

I don't want to change to lower case and capitalize the first char. I'd like to capitalize the first word only without change the others.

解决方案

Here is another go at it:

NSString *txt = @"hi my friends!";
txt = [txt stringByReplacingCharactersInRange:NSMakeRange(0,1) withString:[[txt substringToIndex:1] uppercaseString]];

For Swift language:

txt.replaceRange(txt.startIndex...txt.startIndex, with: String(txt[txt.startIndex]).capitalizedString)

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