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Removing multiple files from a Git repo that have already been deleted from disk
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Bootstrap 3 breakpoints and media queries
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208
Bootstrap 4 Media Queries
// Extra small devices (portrait phones, less than 576px)
// No med...
Why is it slower to iterate over a small string than a small list?
... closer to 70% (or more) once a lot of the overhead is removed, for Python 2.
Object creation is not at fault. Neither method creates a new object, as one-character strings are cached.
The difference is unobvious, but is likely created from a greater number of checks on string indexing, with regards...
Reason for Column is invalid in the select list because it is not contained in either an aggregate f
...pose I have the following table T:
a b
--------
1 abc
1 def
1 ghi
2 jkl
2 mno
2 pqr
And I do the following query:
SELECT a, b
FROM T
GROUP BY a
The output should have two rows, one row where a=1 and a second row where a=2.
But what should the value of b show on each of these two...
Getting pids from ps -ef |grep keyword
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234
You can use pgrep as long as you include the -f options. That makes pgrep match keywords in th...
Check if a value is within a range of numbers
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221
You're asking a question about numeric comparisons, so regular expressions really have nothing...
How to strip leading “./” in unix “find”?
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answered Apr 7 '10 at 22:57
Tim GreenTim Green
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Cannot read configuration file due to insufficient permissions
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How to append multiple values to a list in Python
...ny other thing that provides a sequence of values.
>>> lst = [1, 2]
>>> lst.append(3)
>>> lst.append(4)
>>> lst
[1, 2, 3, 4]
>>> lst.extend([5, 6, 7])
>>> lst.extend((8, 9, 10))
>>> lst
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> lst...