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How to call an external command?
How do you call an external command (as if I'd typed it at the Unix shell or Windows command prompt) from within a Python script?
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How to use double or single brackets, parentheses, curly braces
...veral more
Also, brace expansions create lists of strings which are typically iterated over in loops:
$ echo f{oo,ee,a}d
food feed fad
$ mv error.log{,.OLD}
(error.log is renamed to error.log.OLD because the brace expression
expands to "mv error.log error.log.OLD")
$ for num in {000..2}; do ech...
Do NSUserDefaults persist through an Update to an app in the Appstore?
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They are usually not reset unless the user deletes the app. For basic data, NSUserDefaults is the best way to save data such as preferences, dates, strings etc. If you are looking to save images and files, the file system is a better bet...
When to use reinterpret_cast?
...time hence the word static . This is the cast the C++ compiler uses internally for implicit casts also.
11 Answers
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How to deploy a war file in Tomcat 7
...ed Jan 13 '17 at 9:33
Bumptious Q Bangwhistle
4,33922 gold badges3030 silver badges4242 bronze badges
answered Dec 3 '14 at 11:34
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Android 4.1: How to check notifications are disabled for the application?
...e of the check box, not altering it. I am afraid you did not understand my question.
– Guillaume Perrot
Jul 25 '12 at 12:45
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scala vs java, performance and memory? [closed]
...y easy to use enormous amounts of memory without realizing it. This is usually very powerful, but occasionally can be annoying. For example, suppose you have an array of strings (called array), and a map from those strings to files (called mapping). Suppose you want to get all files that are in t...
Is there any async equivalent of Process.Start?
Like the title suggests, is there an equivalent to Process.Start (allows you run another application or batch file) that I can await?
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How to loop through file names returned by find?
... # Not recommended, will break on whitespace
process "$i"
done
Marginally better, cut out the temporary variable x:
for i in $(find -name \*.txt); do # Not recommended, will break on whitespace
process "$i"
done
It is much better to glob when you can. White-space safe, for files in the ...
Difference between GeoJSON and TopoJSON
... encoding of coordinates, TopoJSON files are often an order of magnitude smaller than GeoJSON files. The secondary advantage of TopoJSON files is that encoding the topology has useful applications, such as topology-preserving simplification (similar to MapShaper) and automatic mesh generation (as in...