大约有 22,000 项符合查询结果（耗时：0.0201秒） [XML]
How do I remove all non alphanumeric characters from a string except dash?
How do I remove all non alphanumeric characters from a string except dash and space characters?
13 Answers
...
How can I validate a string to only allow alphanumeric characters in it?
How can I validate a string using Regular Expressions to only allow alphanumeric characters in it?
10 Answers
...
Replace a character at a specific index in a string?
I'm trying to replace a character at a specific index in a string.
8 Answers
8
...
How do I lowercase a string in C?
How can I convert a mixed case string to a lowercase string in C?
6 Answers
6
...
Turn a string into a valid filename?
I have a string that I want to use as a filename, so I want to remove all characters that wouldn't be allowed in filenames, using Python.
...
String literals: Where do they go?
I am interested in where string literals get allocated/stored.
8 Answers
8
...
strdup() - what does it do in C?
...ed to the abbreviated way in which C and UNIX assigns words, it duplicates strings :-)
Keeping in mind it's actually not part of the ISO C standard itself(a) (it's a POSIX thing), it's effectively doing the same as the following code:
char *strdup(const char *src) {
char *dst = malloc(strlen (...
What's the rationale for null terminated strings?
...and C++, I can't help but scratch my head at the choice of null terminated strings:
18 Answers
...
Convert char to int in C and C++
...test C standard.
Though of course you should use the char type when doing string handling, because the index of the classic ASCII table fits in 1 byte. You could however do string handling with regular ints as well, although there is no practical reason in the real world why you would ever want to ...
What is a method that can be used to increment letters?
...
Simple, direct solution
function nextChar(c) {
return String.fromCharCode(c.charCodeAt(0) + 1);
}
nextChar('a');
As others have noted, the drawback is it may not handle cases like the letter 'z' as expected. But it depends on what you want out of it. The solution above will re...