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Using scanf() in C++ programs is faster than using cin?
... 33,280,276 random numbers. The execution times are:
iostream version: 24.3 seconds
scanf version: 6.4 seconds
Changing the compiler's optimization settings didn't seem to change the results much at all.
Thus: there really is a speed difference.
EDIT: User clyfish points out below that...
What linux shell command returns a part of a string? [duplicate]
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174
If you are looking for a shell utility to do something like that, you can use the cut command.
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Extracting text OpenCV
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edited May 13 '14 at 14:22
answered May 9 '14 at 12:47
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Print Current Mercurial Revision Hash?
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Try:
hg id -i
Example:
$ hg id -i
adc56745e928
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汇编语言超浓缩教程（汇编入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...推出至今，其CPU发展过程为：8086→80286→80386→80486→PENTIUM →……，还有AMD、CYRIX等旁支。后面兼容前面CPU的功能，只不过多了些指令（如多能奔腾的MMX指令集）、增大了寄存器（如386的32位EAX）、增多了寄存器（如48...
Nested Git repositories?
...Alan W. Smith
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answered Dec 9 '09 at 2:47
Greg HewgillGreg Hewgill
783k1671...
How do I debug Node.js applications?
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Wish node-inspector was active. The profiling component needs to get some love.
– Jonathan Dumaine
De...
jQuery to serialize only elements within a div
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edited Nov 30 '19 at 9:54
answered Dec 2 '09 at 0:32
jitt...
Python module for converting PDF to text [closed]
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144
Try PDFMiner. It can extract text from PDF files as HTML, SGML or "Tagged PDF" format.
The Tag...
JSLint is suddenly reporting: Use the function form of “use strict”
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answered Dec 16 '10 at 15:44
bdukesbdukes
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