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Differences between C++ string == and compare()?
...or==
21.4.8.2 operator==
template<class charT, class traits, class Allocator>
bool operator==(const basic_string<charT,traits,Allocator>& lhs,
const basic_string<charT,traits,Allocator>& rhs) noexcept;
Returns: lhs.compare(rhs) == 0.
Seems like ...
Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
... 00000013 080480f4 080480f4 000000f4 2**0
CONTENTS, ALLOC, LOAD, READONLY, DATA
1 .note.ABI-tag 00000020 08048108 08048108 00000108 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
2 .hash 000000d4 08048128 08048128 00000128 2**2
...
How to track down a “double free or corruption” error
...
If you're using glibc, you can set the MALLOC_CHECK_ environment variable to 2, this will cause glibc to use an error tolerant version of malloc, which will cause your program to abort at the point where the double free is done.
You can set this from gdb by using ...
Best way to serialize an NSData into a hexadeximal string
... const unsigned char *dataBuffer = self.bytes;
char *chars = malloc(sizeof(char) * (bytesCount * 2 + 1));
if (chars == NULL) {
// malloc returns null if attempting to allocate more memory than the system can provide. Thanks Cœur
[NSException raise...
How to unescape HTML character entities in Java?
...rformance. Turns out, it does a lot of unnecessary operations. For one, it allocates a StringWriter for every call, even if there's nothing to unescape in the string. I've rewritten that code differently, now it works much faster. Whoever finds this in google is welcome to use it.
Following code u...
How does this milw0rm heap spraying exploit work?
...inding feature of Microsoft's XML handler, that causes heap memory to be deallocated incorrectly.
Shellcode is machine code that will run when the bug occurs. Spray and memory are just some space allocated on the heap to help the exploitable condition occur.
...
How to convert an int value to string in Go?
...Int will do the job. But Sprintf will use the package reflect, and it will allocate one more object, so it's not an efficient choice.
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Why aren't ◎ܫ◎ and ☺ valid JavaScript variable names?
...the same characters, plus any U+200C zero width non-joiner characters, U+200D zero width joiner characters, and characters in the Unicode categories “Non-spacing mark (Mn)”, “Spacing combining mark (Mc)”, “Decimal digit number (Nd)”, or “Connector punctuation (Pc)”.
I’ve also cre...
What characters are valid for JavaScript variable names?
...the same characters, plus any U+200C zero width non-joiner characters, U+200D zero width joiner characters, and characters in the Unicode categories “Non-spacing mark (Mn)”, “Spacing combining mark (Mc)”, “Decimal digit number (Nd)”, or “Connector punctuation (Pc)”.
I’ve also cre...
Regular expression to match non-ASCII characters?
...{
var regex = /([\u0041-\u005A\u0061-\u007A\u00AA\u00B5\u00BA\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05...