大约有 234 项符合查询结果（耗时：0.0075秒） [XML]
Assigning code to a variable
... C#) and we have learned the hard way that you have to be careful with it, esp. in respect with performance.
– Abel
Apr 30 '14 at 11:01
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sh...
Django: “projects” vs “apps”
...command actually stops you, I assume, as a convention. I like conventions, especially in the context of a team effort, but I prefer to understand the logic behind them :)
– Dolph
Feb 2 '11 at 22:02
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Should I use SVN or Git? [closed]
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@Oli Would be good to update your answer (esp about Windows git client) based on the comments here and your experience. The current answer seems biased now that 2-3 years have passed since it was written.
– amit
May 16 '11 at 3:...
Why switch is faster than if
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@Eric it is slower for a small number of values esp String or int which are sparse.
– Peter Lawrey
Jan 3 '18 at 3:29
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Which is faster: Stack allocation or Heap allocation
...single instruction on most architectures, in most cases, e.g. on x86:
sub esp, 0x10
(That moves the stack pointer down by 0x10 bytes and thereby "allocates" those bytes for use by a variable.)
Of course, the stack's size is very, very finite, as you will quickly find out if you overuse stack all...
How can I view the source code for a function?
...s are asterisked" means the function is not exported from its package's namespace. You can still view its source code via the ::: function (i.e. stats:::t.ts), or by using getAnywhere(). getAnywhere() is useful because you don't have to know which package the function came from.
> getAnywhere(...
Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
...er, and the note on the undocumented steez of Volley (got that impression, esp in comparison to the other projects). Definitely helps me get things off the ground.
– Alfie Hanssen
Jun 3 '13 at 21:46
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What is the fastest integer division supporting division by zero no matter what the result is?
...ype f, @function
f:
pushl %ebp
xorl %eax, %eax
movl %esp, %ebp
movl 12(%ebp), %edx
testl %edx, %edx
sete %al
addl %edx, %eax
movl 8(%ebp), %edx
movl %eax, %ecx
popl %ebp
movl %edx, %eax
sarl $31, %edx
idivl %ec...
Performance of foreach, array_map with lambda and array_map with static function
...eed. It would be interesting to see the opcodes generated by this version, especially comparing with/without opcache since it does a lot of optimizations besides code caching.
– FGM
Jan 14 '17 at 16:04
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C++ performance challenge: integer to std::string conversion
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MB/s is a strange metric, especially seeing how you don't remove trailing whitespaces from the string in your implementations. My updated code runs faster than your implementation with x64 VC++ 2005 on Core i7 920 (16.2M ops/s vs. 14.8M ops/s), _ltoa ...