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How to create duplicate allowed attributes
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answered Feb 16 '09 at 14:59
Anton GogolevAnton Gogolev
105k3636 gold badges187187 silver badges274274 bronze badges
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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...
Getting the first index of an object
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answered May 26 '09 at 5:22
MilesMiles
27.2k77 gold badges5454 silver badges7171 bronze badges
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Add new item count to icon on button - Android
...k/res/android"
android:shape="oval">
<solid
android:color="#F00" />
<stroke
android:width="2dip"
android:color="#FFF" />
<padding
android:left="5dip"
android:right="5dip"
android:top="5dip"
android:bottom="5dip" />
</shape>
You'll have...
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?
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+50
The main advantages are that it makes multi-line lists easier to edit and that it reduces clutter in diffs.
Changing:
s = ['manny',
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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)
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edited Jan 17 '18 at 10:14
Aran-Fey
27.5k55 gold badges6666 silver badges107107 bronze badges
answer...
Private vs Public in Cache-Control
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edited Aug 16 '10 at 11:33
answered Aug 16 '10 at 10:51
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