大约有 43,000 项符合查询结果(耗时:0.0278秒) [XML]

https://stackoverflow.com/ques... 

How to parse a string to an int in C++?

What's the C++ way of parsing a string (given as char *) into an int? Robust and clear error handling is a plus (instead of returning zero ). ...
https://stackoverflow.com/ques... 

Simple way to repeat a String in java

...e is the shortest version (Java 1.5+ required): repeated = new String(new char[n]).replace("\0", s); Where n is the number of times you want to repeat the string and s is the string to repeat. No imports or libraries needed. ...
https://stackoverflow.com/ques... 

Get the IP address of the machine

... <string.h> #include <arpa/inet.h> int main (int argc, const char * argv[]) { struct ifaddrs * ifAddrStruct=NULL; struct ifaddrs * ifa=NULL; void * tmpAddrPtr=NULL; getifaddrs(&ifAddrStruct); for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next) { ...
https://stackoverflow.com/ques... 

How to ignore whitespace in a regular expression subject string?

... You can stick optional whitespace characters \s* in between every other character in your regex. Although granted, it will get a bit lengthy. /cats/ -> /c\s*a\s*t\s*s/ share ...
https://stackoverflow.com/ques... 

Writing Unicode text to a text file?

...ltin open()) on Python 3: import io with io.open(filename, 'w', encoding=character_encoding) as file: file.write(unicode_text) It might be more convenient if you need to write the text incrementally (you don't need to call unicode_text.encode(character_encoding) multiple times). Unlike codec...
https://stackoverflow.com/ques... 

Regular expressions in C: examples?

...based on this): #include <regex.h> regex_t regex; int reti; char msgbuf[100]; /* Compile regular expression */ reti = regcomp(&regex, "^a[[:alnum:]]", 0); if (reti) { fprintf(stderr, "Could not compile regex\n"); exit(1); } /* Execute regular expression */ reti = regexec...
https://stackoverflow.com/ques... 

Insert spaces between words on a camel-cased token [duplicate]

...e Stuff And Sell It (IIRC). Syntax explanation (credit): {Ll} is Unicode Character Category "Letter lowercase" (as opposed to {Lu} "Letter uppercase"). P is a negative match, while p is a positive match, so \P{Ll} is literally "Not lowercase" and p{Ll} is "Lowercase". So this regex splits on two p...
https://stackoverflow.com/ques... 

Printing all global variables/local variables?

... In case you want to see the local variables of a calling function use select-frame before info locals E.g.: (gdb) bt #0 0xfec3c0b5 in _lwp_kill () from /lib/libc.so.1 #1 0xfec36f39 in thr_kill () from /lib/libc.so.1 #2 0xfebe3603 in raise () from /lib/libc.so.1 #3 0xfebc2961 in abort () f...
https://stackoverflow.com/ques... 

How do I initialize a byte array in Java?

...; for (int i = 0; i < len; i += 2) { data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i+1), 16)); } return data; } If you let CDRIVES static and final, the performance drop is irrelevant. ...
https://stackoverflow.com/ques... 

How do I replace a character at a particular index in JavaScript?

I have a string, let's say Hello world and I need to replace the char at index 3. How can I replace a char by specifying a index? ...