大约有 30,000 项符合查询结果（耗时：0.0268秒） [XML]
What is the advantage of GCC's __builtin_expect in if else statements?
...ect or not. On the other hand, the compiler can perform many optimizations based on the branch probability, such as organizing the code so the hot path is contiguous, moving code unlikely to be optimized further away or reducing its size, taking decisions about which branches to vectorize, better sc...
How to make an OpenGL rendering context with transparent background?
...body else then you must
* leave this message in it.
*
* This program is based on the simplest possible
* Linux OpenGL program by FTB (see info below)
The simplest possible Linux OpenGL program? Maybe...
(c) 2002 by FTB. See me in comp.graphics.api.opengl
--
<\___/>
/ O O \
...
Check if an array contains any element of another array in JavaScript
...nst a = ['a', 'b', 'c'];
const b = ['c', 'a', 'd'];
_.intersection(a, b)
DEMO: https://jsfiddle.net/r257wuv5/
jsPerf: https://jsperf.com/array-contains-any-element-of-another-array
share
|
improv...
MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...ful with this workaround. You may be allowing anonymous access to your database from any location. In case of doubt, I would rather delete the user.
– RandomSeed
Oct 3 '13 at 14:30
...
Obfuscated C Code Contest 2006. Please explain sykes2.c
...it.
Indenting:
main(_) {
_^448 && main(-~_);
putchar(--_%64
? 32 | -~7[__TIME__-_/8%8][">'txiZ^(~z?"-48] >> ";;;====~$::199"[_*2&8|_/64]/(_&2?1:8)%8&1
: 10);
}
Introducing variables to untangle this mess:
main(int i) {
if(i^448)
m...
cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 28 HTT Multi-Threading
29 TM Thermal Monitor
30 IA64 IA64 Capabilities
31 PBE Pending Break Enable
ECX定义如下（资料来自Intel）：
bit Name Description
---------------------------------------------------------
00 SSE3 ...
How can I transform between the two styles of public key format, one “BEGIN RSA PUBLIC KEY”, the oth
...y();
echo $rsa->getPublicKey(CRYPT_RSA_PUBLIC_FORMAT_PKCS1_RAW);
The base64-encoded stuff appears to match even though the header says BEGIN PUBLIC KEY and not BEGIN RSA PUBLIC KEY. So maybe just use str_replace to fix that and you should be good to go!
...
Why does Javascript's regex.exec() not always return the same value? [duplicate]
... in a loop, you can stop it after a desired number of matches.
Here's a demonstration of a typical approach to using the regex in a loop. It takes advantage of the fact that exec returns null when there are no more matches by performing the assignment as the loop condition.
var re = /foo_(\d+)/g...
Hashing a dictionary?
...nto nested tuples and make_hash_sha256() will also convert the repr() to a base64 encoded SHA256 hash.
import hashlib
import base64
def make_hash_sha256(o):
hasher = hashlib.sha256()
hasher.update(repr(make_hashable(o)).encode())
return base64.b64encode(hasher.digest()).decode()
def m...
What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 an
...int $0x80
http://www.int80h.org/bsdasm/#default-calling-convention
x86-64 Linux System Call convention:
x86-64 Mac OS X is similar but different. TODO: check what *BSD does.
Refer to section: "A.2 AMD64 Linux Kernel Conventions" of System V Application Binary Interface AMD64 Architecture Proc...