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Bash: If/Else statement in one line
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pgrep -q some_process && echo 1 || echo 0
more oneliners here
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Any reason not to use '+' to concatenate two strings?
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The assumption that one should never, ever use + for string concatenation, but instead always use ''.join may be a myth. It is true that using + creates unnecessary temporary copies of immutable string object but the other not oft quoted fact is...
Transpose list of lists
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One way to do it is with NumPy transpose. For a list, a:
>>> import numpy as np
>>> np.array(a).T.tolist()
[[1, 4, 7], [2, 5, 8], [3, 6, 9]]
Or another one without zip:
>>> map(list,map(None,*a))
[...
Search for one value in any column of any table inside a database
Is there a way to search for one value (in my case it is a UID of the type char(64) ) inside any column of any table inside one MS SQL Server database?
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Is there a VB.NET equivalent for C#'s '??' operator?
...r (Visual Basic)
Uses short-circuit evaluation to conditionally return one of two
values. The If operator can be called with three arguments or with two
arguments.
If( [argument1,] argument2, argument3 )
If Operator Called with Two Arguments
The first argument to If can be omit...
using href links inside tag
... to have a drop menu there are plenty of arguably better ways to implement one. This answer is a direct answer to a direct question, but I don't advocate this method for public facing web sites.
UPDATE (May 2020): Someone asked in the comments why I wouldn't advocate this solution. I guess it's a q...
When to use LinkedList over ArrayList in Java?
I've always been one to simply use:
33 Answers
33
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Can you use a trailing comma in a JSON object?
...'t the first entry
s.appendF("\"%d\"", i);
}
s.append("]");
That extra one line of code in your for loop is hardly expensive...
Another alternative I've used when output a structure to JSON from a dictionary of some form is to always append a comma after each entry (as you are doing above) and ...
Multiple INSERT statements vs. single INSERT with multiple VALUES
... up. This is the cut off point between the plan being an auto parametrized one (with 1,000 parameters) to a non parametrized one. Thereafter it seems to get linearly less efficient (in terms of number of value clauses processed in a given time).
Not sure why this should be. Presumably when it is co...
Maven parent pom vs modules pom
...ays to structure parent poms in a multiproject build and I wondering if anyone had any thoughts on what the advantages / drawbacks are in each way.
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