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A migration to add unique constraint to a combination of columns
...ship.create!(user_id: user_id, post_id: post_id)
Fully runnable example: https://gist.github.com/Dorian/9d641ca78dad8eb64736173614d97ced
db/schema.rb generated: https://gist.github.com/Dorian/a8449287fa62b88463f48da986c1744a
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Is #pragma once part of the C++11 standard?
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T-SQL - function with default parameters
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How to wrap text around an image using HTML/CSS
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When writing a directive in AngularJS, how do I decide if I need no new scope, a new child scope, or
...uch as ngController)
Be sure to check out the source code for directives: https://github.com/angular/angular.js/tree/master/src/ng/directive
It greatly helps on how to think about them
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How do I design a class in Python?
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How to design a class.
Write down the words. You started to do this. Some people don't and wonder why they have problems.
Expand your set of words into simple statements about what these objects will be doing. That is to say, write down the various ca...
How serious is this new ASP.NET security vulnerability and how can I workaround it?
... bulletin
KB Article with reference to the fix
ScottGu has links for the downloads
[Update 2010-09-25]
While we are waiting for the fix, yesterday ScottGu postet an update on how to add an extra step to protect your sites with a custom URLScan rule.
Basically make sure you provide a custom err...
What's the difference between == and .equals in Scala?
...ou really need to find out if something is actually NaN use isNaN:
Java: https://docs.oracle.com/javase/7/docs/api/java/lang/Double.html#isNaN(double)
Scala: http://www.scala-lang.org/files/archive/api/2.11.8/index.html#scala.Double@isNaN():Boolean
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Reset keys of array elements in php?
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MySQL high CPU usage [closed]
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same problem, solved by indexing the tables that slow down the process, thank you Steven and Juddling
– gabrielem
Aug 26 '15 at 22:21
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