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What text editor is available in Heroku bash shell? [closed]
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edited Feb 25 '14 at 7:08
answered Dec 19 '13 at 20:54
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Copy table without copying data
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answered Dec 2 '09 at 17:28
AndomarAndomar
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how to “reimport” module to python then code be changed after import
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For Python 2.x
reload(foo)
For Python 3.x
import importlib
import foo #import the module here, so that it can be reloaded.
importlib.reload(foo)
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Modify SVG fill color when being served as Background-Image
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edited Dec 21 '18 at 0:15
David Neto
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Why use symbols as hash keys in Ruby?
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229
TL;DR:
Using symbols not only saves time when doing comparisons, but also saves memory, becau...
How to convert decimal to hexadecimal in JavaScript
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27 Answers
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Global access to Rake DSL methods is deprecated
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edited May 23 '17 at 10:34
Community♦
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answered Jun 1 '11 at 10:45
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How to empty a list?
... label with a new empty list:
del lst[:]
Here's an example:
lst1 = [1, 2, 3]
lst2 = lst1
del lst1[:]
print(lst2)
For the sake of completeness, the slice assignment has the same effect:
lst[:] = []
It can also be used to shrink a part of the list while replacing a part at the same time (but ...
How to get multiple counts with one SQL query?
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729
You can use a CASE statement with an aggregate function. This is basically the same thing as a ...
Why isn't SQL ANSI-92 standard better adopted over ANSI-89?
...ere was no difference in optimization or performance of SQL-89 versus SQL-92 style joins. One can assume that most RDBMS engines transform the syntax into an internal representation before optimizing or executing the query, so the human-readable syntax makes no difference.
I also try to evangelize...