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How do I check that a Java String is not all whitespaces?
...ity of the question :) Also, I rarely use matches(): for performance, I usually store the Pattern in a final static. Pays off if the same code runs frequently.
– Carl Smotricz
Jul 14 '10 at 14:31
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Delete empty lines using sed
... spaces or tabs in your "empty" line. Use POSIX classes with sed to remove all lines containing only whitespace:
sed '/^[[:space:]]*$/d'
A shorter version that uses ERE, for example with gnu sed:
sed -r '/^\s*$/d'
(Note that sed does NOT support PCRE.)
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“Parse Error : There is a problem parsing the package” while installing Android application
...opment. Help of any sort is appreciated :)
– varunrao321
May 2 '12 at 13:11
2
I faced the similar...
Tool to generate JSON schema from JSON data [closed]
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GenSON (PyPI | Github) is a JSON Schema generator that can generate a single schema from multip...
Remove duplicates from a List in C#
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ljsljs
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Homebrew’s `git` not using completion
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– TheAmazingKnight
Jan 17 '18 at 1:32
1
This is the actual solution more easy
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Does python have a sorted list?
...mparison.
– GrantJ
Mar 27 '14 at 17:32
"isn't a sorted list in your definition." How so?
– Colon...
How to do ToString for a possibly null object?
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edited Sep 4 at 21:32
answered Oct 21 '10 at 12:56
A...
How to find all combinations of coins when given some dollar value
...or this, and contains a fairly extensive discussion of the problem. Essentially you define a polynomial where the nth coefficient is the number of ways of making change for n dollars.
Pages 4-5 of the writeup show how you can use Mathematica (or any other convenient computer algebra system) to comp...
How to implement common bash idioms in Python? [closed]
...y shell has several sets of features.
The Essential Linux/Unix commands. All of these are available through the subprocess library. This isn't always the best first choice for doing all external commands. Look also at shutil for some commands that are separate Linux commands, but you could proba...