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Why are elementwise additions much faster in separate loops than in a combined loop?
...n an actual Core 2 architecture machine:
2 x Intel Xeon X5482 Harpertown @ 3.2 GHz:
#define ALLOCATE_SEPERATE
#define ONE_LOOP
00600020
006D0020
007A0020
00870020
seconds = 6.206
#define ALLOCATE_SEPERATE
//#define ONE_LOOP
005E0020
006B0020
00780020
00850020
seconds = 2.116
//#define ALLOCATE_SEP...
Java: parse int value from a char
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edited Apr 30 '18 at 4:24
Neuron
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What does cherry-picking a commit with Git mean?
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edited Dec 12 '18 at 12:35
Lii
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answered Feb 18...
Add up a column of numbers at the Unix shell
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391
... | paste -sd+ - | bc
is the shortest one I've found (from the UNIX Command Line blog).
E...
Use of def, val, and var in scala
...esperJesper
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27
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How do I iterate over an NSArray?
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Quinn TaylorQuinn Taylor
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项目管理实践【四】Bug跟踪管理【Bug Trace and Management】 - 项目管理 -...
...比如：C:\BugNET）。那么URL就应该是http://localhost/BugNet 。
3.使用Windows资源管理器，打开网站的根目录（默认是C:\BugNET）。右键点击该目录，在弹出菜单中选择"共享和安全"（请注意：如果你是有的是Windows XP，在查看这些选项之前...
Counting the number of elements with the values of x in a vector
...an just use table():
> a <- table(numbers)
> a
numbers
4 5 23 34 43 54 56 65 67 324 435 453 456 567 657
2 1 2 2 1 1 2 1 2 1 3 1 1 1 1
Then you can subset it:
> a[names(a)==435]
435
3
Or convert it into a data.frame if you're more comfor...
Determine if a function exists in bash
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