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Determine what attributes were changed in Rails after_save callback?
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Rails 5.1+
Use saved_change_to_published?:
class SomeModel < ActiveRecord::Base
after_update :send_notification_after_change
def send_notification_after_change
Notification.send(…) if (saved_change_to_published? &am...
What makes Lisp macros so special?
... a list containing all even numbers between 0 and 9. Back in the Python 1.5 days there was no such syntax; you'd use something more like this:
divisibleByTwo = []
for x in range( 10 ):
if x % 2 == 0:
divisibleByTwo.append( x )
These are both functionally equivalent. Let's invoke our su...
How to add border radius on table row
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answered Nov 4 '10 at 5:40
theazureshadowtheazureshadow
7,51344 gold badges3030 silver badges4646 bronze badges
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Setting table row height
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165
try this:
.topics tr { line-height: 14px; }
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Section vs Article HTML5
...deos, a newsfeed etc.. I am a bit confused how to represent these with HTML5. Currently I have them as HTML5 <section> s, but on further inspection it looks they the more correct tag would be <article> . Could anyone shed some light on this for me?
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Access index of the parent ng-repeat from child ng-repeat
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answered Feb 11 '13 at 22:51
Coder1Coder1
12.5k1111 gold badges5050 silver badges7171 bronze badges
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Cannot create an array of LinkedLists in Java…?
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answered Oct 19 '08 at 22:53
SergeySergey
2,85522 gold badges2424 silver badges3232 bronze badges
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Best way to add comments in erb
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357
Use the <%# %> sequence, e.g.
<%# This is a great comment! %>
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Function to Calculate Median in SQL Server
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edited Nov 20 '19 at 22:57
answered Oct 14 '09 at 17:54
J...
Is there a method that works like start fragment for result?
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58
All of the Fragments live inside Activities. Starting a Fragment for a result doesn't make much...