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A migration to add unique constraint to a combination of columns
What I need is a migration to apply unique constraint to a combination of columns. i.e. for a people table, a combination of first_name , last_Name and Dob should be unique.
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What are JavaScript's builtin strings?
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First of all, I would like to thank Jason and all the contributors for playing with that funny snippet. I have written that piece of code just for fun in order to send it to my wife on February 14 :) Having only Chrome installed on the laptop I had no options to check how it works in ...
Does Java SE 8 have Pairs or Tuples?
...ant to map an index i to a pair / tuple (i, value[i]) , then filter based on the second value[i] element, and finally output just the indices.
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How to exclude a directory in find . command
I'm trying to run a find command for all JavaScript files, but how do I exclude a specific directory?
38 Answers
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Parallel.ForEach vs Task.Factory.StartNew
What is the difference between the below code snippets? Won't both be using threadpool threads?
4 Answers
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How do I send a cross-domain POST request via JavaScript?
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Update: Before continuing everyone should read and understand the html5rocks tutorial on CORS. It is easy to understand and very clear.
If you control the server being POSTed, simply leverage the "Cross-Origin Resource Sharing stand...
Rails: Default sort order for a rails model?
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default_scope
This works for Rails 4+:
class Book < ActiveRecord::Base
default_scope { order(created_at: :desc) }
end
For Rails 2.3, 3, you need this instead:
default_scope order('created_at DESC')
For Rails 2.x:
default_scope :order => 'created_at DESC'
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How can I use redis with Django?
I've heard of redis-cache but how exactly does it work? Is it used as a layer between django and my rdbms, by caching the rdbms queries somehow?
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How to post pictures to instagram using API
I am building a php application which needs to post the user uploaded picture directly to Instagram, but after a quick search i found that there is no such function in the API :( and it feels weird... because they should provide one. I am not sure if there is any other way (except the apps for andro...
Secure Web Services: REST over HTTPS vs SOAP + WS-Security. Which is better? [closed]
I'm not a security expert by any means, but I favor creating REST-style web services.
11 Answers
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