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How to get the command line args passed to a running process on unix/linux systems?
...overflow.com/questions/199130/… for more info. You can query your kernel setting with getconf PAGE_SIZE, it's usually 4096.
– t0r0X
Apr 25 '14 at 14:34
...
How to get “wc -l” to print just the number of lines without file name?
outputs number of lines and file name.
9 Answers
9
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How do you normalize a file path in Bash?
I want to transform /foo/bar/.. to /foo
22 Answers
22
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通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...imit -d unlimited；对进程的数据段大小不进行限制。
-f
进程可以创建文件的最大值，以 blocks 为单位。
ulimit – f 2048；限制进程可以创建的最大文件大小为 2048 blocks。
-l
最大可加锁内存大小，以 Kbytes 为单位。
...
Split List into Sublists with LINQ
... return !done;
}
public void Reset()
{
// per http://msdn.microsoft.com/en-us/library/system.collections.ienumerator.reset.aspx
throw new NotSupportedException();
}
}
...
Fastest way to find second (third…) highest/lowest value in vector or column
...;- length(x)
if(N>len){
warning('N greater than length(x). Setting N=length(x)')
N <- length(x)
}
sort(x,partial=len-N+1)[len-N+1]
}
microbenchmark::microbenchmark(
Rfast = Rfast::nth(x,5,descending = T),
maxn = maxN(x,5),
order = x[order(x, decreasing...
What is the effect of extern “C” in C++?
...
extern "C" makes a function-name in C++ have C linkage (compiler does not mangle the name) so that client C code can link to (use) your function using a C compatible header file that contains just the declaration of your function. Your function...
Correctly determine if date string is a valid date in that format
...p
function validateDateTime($dateStr, $format)
{
date_default_timezone_set('UTC');
$date = DateTime::createFromFormat($format, $dateStr);
return $date && ($date->format($format) === $dateStr);
}
// These return true
validateDateTime('2001-03-10 17:16:18', 'Y-m-d H:i:s');
vali...
Find a pair of elements from an array whose sum equals a given number
...
@jazzz I mean HashMap here, though HashSet will also do. Here is the implementation - github.com/kinshuk4/AlgorithmUtil/blob/master/src/com/vaani/…. Hope it helps.
– kinshuk4
Oct 6 '18 at 16:27
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Application auto build versioning
...
The Go linker (go tool link) has an option to set the value of an uninitialised string variable:
-X importpath.name=value
Set the value of the string variable in importpath named name to
value.
Note that before Go 1.5 this option took two separate argument...