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Create array of all integers between two numbers, inclusive, in Javascript/jQuery [duplicate]
...rr = [],
c = highEnd - lowEnd + 1;
while ( c-- ) {
arr[c] = highEnd--
}
Demo
http://jsfiddle.net/W3CUn/
FOR THE DOWNVOTERS
performance
http://jsperf.com/for-push-while-set/2
faster in ie and 3x faster in firefox
only on aipad air the for loop is a little faster.
tested on win8, osx10.8, u...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...glibc malloc版本。
ptmalloc原理
系统调用接口
上图是 x86_64 下 Linux 进程的默认地址空间, 对 heap 的操作, 操作系统提供了brk()系统调用，设置了Heap的上边界； 对 mmap 映射区域的操作,操作系 统 供了 mmap()和 munmap()函数。
因为系统...
How do I change Bootstrap 3 column order on mobile layout?
...
Updated 2018
For the original question based on Bootstrap 3, the solution was to use push-pull.
In Bootstrap 4 it's now possible to change the order, even when the columns are full-width stacked vertically, thanks to Bootstrap 4 flexbox. OFC, the push pull method...
How to format numbers as currency string?
...
Thanks! Based on this idea I was able to make one that is short and simple enough! (and localized) Excellent.
– Daniel Magliola
Sep 29 '08 at 15:25
...
How do I check if a number evaluates to infinity?
...
Because IEEE 64bit floats have 53 significant binary digits (see en.wikipedia.org/wiki/IEEE_754 ), so n+1 cannot be represented and is subject to rounding. Well, even integers are affected by rounding errors. Btw, I don't think that your ...
How to initialize all members of an array to the same value?
...VAL_16X VAL_8X, VAL_8X
#define VAL_32X VAL_16X, VAL_16X
#define VAL_64X VAL_32X, VAL_32X
int myArray[53] = { VAL_32X, VAL_16X, VAL_4X, VAL_1X };
If you need to change the value, you have to do the replacement at only one place.
Edit: possible useful extensions
(courtesy of Jonathan Le...
Multiple variables in a 'with' statement?
...red Jun 20 '18 at 23:32
nyanpasu64nyanpasu64
1,71711 gold badge1515 silver badges2626 bronze badges
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What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
...ly to be loaded in x64 process) and how to start the process (for new EXE) based on flags. I believe IL is the same for both flavors.
– Alexei Levenkov
Aug 22 '12 at 5:51
1
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Computed / calculated / virtual / derived columns in PostgreSQL
...hese solutions are pretty much useless (without huge code changes to a codebase with no test cases) when migrating from oracle to postgres. Are there any solutions from the migration perspective ?
– happybuddha
Oct 3 '16 at 0:41
...
Passing a URL with brackets to curl
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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