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Naming convention for unique constraint
...en a unique constraint and a unique index is INCLUDE columns.
Edit: Feb 2013. Since SQL Server 2008, indexes can have filters too. Constraints can not
So, it comes down to one of
stick with UQ as per the rest of the SQL-using planet
use IK for unique indexes (IKC for clustered too) to be consis...
Python's “in” set operator
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101
Yes, but it also means hash(b) == hash(x), so equality of the items isn't enough to make them t...
PhpStorm wrap/surround selection?
... -> Surround selection on typing quote or brace.
Update (for PhpStorm 2016)
For PhpStorm Version 2016, use Cmd + Alt + S (on Mac) or Ctrl + Alt + S (on Win) to go to Settings. Tick on checkbox of Settings -> Editor -> General -> Smart Keys -> Surround selection on typing quote or b...
How to hide output of subprocess in Python 2.7
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440
Redirect the output to DEVNULL:
import os
import subprocess
FNULL = open(os.devnull, 'w')
retc...
Why are trailing commas allowed in a list?
...
+50
The main advantages are that it makes multi-line lists easier to edit and that it reduces clutter in diffs.
Changing:
s = ['manny',
...
Is there an equivalent to background-size: cover and contain for image elements?
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400
Solution #1 - The object-fit property (Lacks IE support)
Just set object-fit: cover; on the im...
Button Click event fires when pressing Enter key in different input (no forms)
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+500
I had the same problem and solved it by adding type="button" attribute to the <button> element, by which IE thinks the button a...
TypeError: module.__init__() takes at most 2 arguments (3 given)
... |
edited Jan 17 '18 at 10:14
Aran-Fey
27.5k55 gold badges6666 silver badges107107 bronze badges
answer...
How to create duplicate allowed attributes
...
answered Feb 16 '09 at 14:59
Anton GogolevAnton Gogolev
105k3636 gold badges187187 silver badges274274 bronze badges
...
Run a callback only if an attribute has changed in Rails
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200
Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_chan...