What is the easiest way to capitalize the first letter in each word of a string?
用字符串的每个单词的第一个字母大写的最简单的方法是什么?
10 个解决方案
#1
14
See the faq.
查看常见问题。
I don't believe ucfirst() satisfies the OP's question to capitalize the first letter of each word in a string without splitting the string and joining it later.
我不相信ucfirst()满足OP的问题，将每个单词的第一个字母大写，而不拆分字符串并随后加入。
#2
46
As @brian is mentioning in the comments the currently accepted answer by @piCookie is wrong!
正如@brian在评论中提到的，@piCookie目前接受的答案是错误的!
$_="what's the wrong answer?";
s/\b(\w)/\U$1/g
print;
This will print "What'S The Wrong Answer?" notice the wrongly capitalized S
这将打印出“什么是错误的答案?”注意错误的大写S。
As the FAQ says you are probably better off using
正如FAQ中所说，你最好使用。
s/([\w']+)/\u\L$1/g
或文本::自动套用格式
#3
10
Take a look at the ucfirst function.
看看ucfirst函数。
$line = join " ", map {ucfirst} split " ", $line;
#4
8
$capitalized = join '', map { ucfirst lc } split /(\s+)/, $line;
By capturing the whitespace, it is inserted in the list and used to rebuild the original spacing. "ucfirst lc" capitalizes "teXT" to "Text".
通过捕获空格，它被插入到列表中，并用于重建原始的间距。“ucfirst lc”将“文本”资本化为“文本”。
#5
5
$string =~ s/(\w+)/\u$1/g;
should work just fine
应该工作的很好
#6
2
This capitalizes only the first word of each line:
这只大写了每一行的第一个单词:
perl -ne "print (ucfirst($1)$2) if s/^(\w)(.*)/\1\2/" file
#7
1
You can use 'Title Case', its a very cool piece of code written in Perl.
您可以使用“Title Case”，它是用Perl编写的非常酷的代码。
#8
0
Note that the FAQ solution doesn't work if you have words that are in all-caps and you want them to be (only) capitalized instead. You can either make a more complicated regex, or just do a lc on the string before applying the FAQ solution.
请注意，FAQ解决方案如果你的单词是全大写的，并且你希望它们是大写的，那么它就不会起作用。您可以创建一个更复杂的regex，或者在应用FAQ解决方案之前在字符串上做一个lc。
#9
0
The ucfirst function in a map certainly does this, but only in a very rudimentary way. If you want something a bit more sophisticated, have a look at John Gruber's TitleCase script.
地图上的ucfirst函数当然是这样做的，但只是在非常基本的方面。如果你想要更复杂一点的东西，可以看看约翰·格鲁伯的标题。
#10
0
try this :
试试这个:
echo "what's the wrong answer?" |perl -pe 's/^/ /; s/\s(\w+)/ \u$1/g; s/^ //'
What's The Wrong Answer?
错误的答案是什么?
#1
14
See the faq.
查看常见问题。
I don't believe ucfirst() satisfies the OP's question to capitalize the first letter of each word in a string without splitting the string and joining it later.
我不相信ucfirst()满足OP的问题，将每个单词的第一个字母大写，而不拆分字符串并随后加入。
#2
46
As @brian is mentioning in the comments the currently accepted answer by @piCookie is wrong!
正如@brian在评论中提到的，@piCookie目前接受的答案是错误的!
$_="what's the wrong answer?";
s/\b(\w)/\U$1/g
print;
This will print "What'S The Wrong Answer?" notice the wrongly capitalized S
这将打印出“什么是错误的答案?”注意错误的大写S。
As the FAQ says you are probably better off using
正如FAQ中所说，你最好使用。
s/([\w']+)/\u\L$1/g
或文本::自动套用格式
#3
10
Take a look at the ucfirst function.
看看ucfirst函数。
$line = join " ", map {ucfirst} split " ", $line;
#4
8
$capitalized = join '', map { ucfirst lc } split /(\s+)/, $line;
By capturing the whitespace, it is inserted in the list and used to rebuild the original spacing. "ucfirst lc" capitalizes "teXT" to "Text".
通过捕获空格，它被插入到列表中，并用于重建原始的间距。“ucfirst lc”将“文本”资本化为“文本”。
#5
5
$string =~ s/(\w+)/\u$1/g;
should work just fine
应该工作的很好
#6
2
This capitalizes only the first word of each line:
这只大写了每一行的第一个单词:
perl -ne "print (ucfirst($1)$2) if s/^(\w)(.*)/\1\2/" file
#7
1
You can use 'Title Case', its a very cool piece of code written in Perl.
您可以使用“Title Case”，它是用Perl编写的非常酷的代码。
#8
0
Note that the FAQ solution doesn't work if you have words that are in all-caps and you want them to be (only) capitalized instead. You can either make a more complicated regex, or just do a lc on the string before applying the FAQ solution.
请注意，FAQ解决方案如果你的单词是全大写的，并且你希望它们是大写的，那么它就不会起作用。您可以创建一个更复杂的regex，或者在应用FAQ解决方案之前在字符串上做一个lc。
#9
0
The ucfirst function in a map certainly does this, but only in a very rudimentary way. If you want something a bit more sophisticated, have a look at John Gruber's TitleCase script.
地图上的ucfirst函数当然是这样做的，但只是在非常基本的方面。如果你想要更复杂一点的东西，可以看看约翰·格鲁伯的标题。
#10
0
try this :
试试这个:
echo "what's the wrong answer?" |perl -pe 's/^/ /; s/\s(\w+)/ \u$1/g; s/^ //'
What's The Wrong Answer?
错误的答案是什么?