大约有 40,000 项符合查询结果（耗时：0.0470秒） [XML]
Node.js create folder or use existing
...y. Callback is called after path is created or if path did already exists. Error err is set if mkdirp failed to create directory path.
var mkdirp = require('mkdirp');
mkdirp('/tmp/some/path/foo', function(err) {
// path exists unless there was an error
});
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Clang vs GCC for my Linux Development project
...class, right :) ?
Well, gcc notices it too, after a fashion:
prog.cpp:9: error: expected initializer before ‘&’ token
prog.cpp: In function ‘int main()’:
prog.cpp:15: error: no match for ‘operator<<’ in ‘std::cout << me’
/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/...
grep output to show only matching file
What is the option for grep that will allow me only to print the matching file and not the line within a file that matches the criteria?
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Can you run GUI applications in a Docker container?
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the creackfirefox-vnc image fails with error: Enter VNC password: stty: standard input: Inappropriate ioctl for device fgets: No such file or directory stty: standard input: Inappropriate ioctl for device x11vnc -usepw: could not find a password to use.
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List all the files that ever existed in a Git repository
Do you have a clean way to list all the files that ever existed in specified branch?
4 Answers
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pretty-print JSON using JavaScript
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This worked for me, but threw an error using JSON.parse so I modified it to be JSON.stringify(jsonString, null, 2). Depends on your JSON/Object.
– Jazzy
Aug 2 '14 at 22:20
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Test if a command outputs an empty string
...ent that is being checked, otherwise empty results will result in a syntax error as there is no second argument (to check) given!
Note: that ls -la always returns . and .. so using that will not work, see ls manual pages. Furthermore, while this might seem convenient and easy, I suppose it will bre...
How can I force division to be floating point? Division keeps rounding down to 0?
...ommended for Python 2
Commonly seen is a / float(b). This will raise a TypeError if b is a complex number. Since division with complex numbers is defined, it makes sense to me to not have division fail when passed a complex number for the divisor.
>>> 1 / float(2)
0.5
>>> 1 / float...
Python memory leaks [closed]
...ug(mem_top())", while its explanation of results is the author's real life error tracking experience without context... that's not a technical specification that tells a dev exactly what they are looking at... I'm not knocking your answer... it shows high level suspects as billed... it doesn't gi...
How can I specify the base for Math.log() in JavaScript?
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I've noticed some potential room for error here, probably having to do with floating point math. I just tried the function above with a value of 1000 in node, and got a result of 2.9999999999999996. (Although other numbers I tried, such as 10, 100, and even 1000...