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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
...结果：
haohe@sles10-hehao:~/code/ulimit> ls test -l
/bin/ls: error while loading shared libraries: libc.so.6: failed to map segment
from shared object: Cannot allocate memory
从上面的结果可以看到，此时 ls 运行失败。根据系统给出的错误信息我们可以看...
Resync git repo with new .gitignore file
... suggests in his edit:
Files with space in their paths
In case you get an error message like fatal: path spec '...' did not match any files, there might be files with spaces in their path.
You can remove all other files with option --ignore-unmatch:
git rm --cached --ignore-unmatch `git ls-files -...
Get ffmpeg information in friendly way
...
Another usage of ffprobe which is nicely parseable:
ffprobe -v error -select_streams v:0 -show_entries stream=width,height,r_frame_rate,bit_rate,codec_name,duration -of csv=p=0:s=x video.mp4
results in:
h264x600x480x25/1x385.680000x542326
-select_streams v:0 selects only the video st...
JavaScript :How to set a Conditional Break Point in Chrome debugger tools
...debugger calls in production code. (I'm pretty sure linting will throw an error if debugger is around, but it's worth calling out whenever the topic is raised).
– Crispen Smith
Oct 18 '14 at 22:32
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Why does multiprocessing use only a single core after I import numpy?
...
Error > AttributeError: module 'os' has no attribute 'sched_getaffinity' , Python 3.6
– Paddy
Mar 9 '17 at 13:38
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Super-simple example of C# observer/observable with delegates
... let the .Dispose method do the opposite of the code in the constructor
No error-checking performed, at least a null-check should be done in the constructor of the ObserverClass
share
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improve thi...
How to turn on/off ReactJS 'development mode'?
...production version includes extra performance optimizations and strips all error messages.
Basically, the unminified version of React is "development" mode, and the minified version of React is "production" mode.
To be in "production" mode, just include the minified version react-0.9.0.min.js
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Is there a reason for C#'s reuse of the variable in a foreach?
...e compiler declares the variable in a way that makes it highly prone to an error that is often difficult to find and debug, while producing no perceivable benefits.
Your criticism is entirely justified.
I discuss this problem in detail here:
Closing over the loop variable considered harmful
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How to find the 'sizeof' (a pointer pointing to an array)?
...ng in an array of an unwanted size.
int x[20];
int y[10];
foo(&x); /* error */
foo(&y); /* ok */
If the function is supposed to be able to operate on any size of array, then you will have to provide the size to the function as additional information.
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PHP: Move associative array element to beginning of array
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I think the "=" is a syntax error: return = array_reverse($arr, true);
– Mark Eirich
Jun 30 '12 at 18:10
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