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how to generate migration to make references polymorphic
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109
As far as I know, there's no built-in generator for polymorphic associations. Generate a blank...
How to redirect the output of an application in background to /dev/null
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231
You use:
yourcommand > /dev/null 2>&1
If it should run in the Background add an &...
Which characters are valid/invalid in a JSON key name?
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168
No. Any valid string is a valid key. It can even have " as long as you escape it:
{"The \"mea...
How to select only the first rows for each unique value of a column
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126
A very simple answer if you say you don't care which address is used.
SELECT
CName, MIN(A...
How to validate date with format “mm/dd/yyyy” in JavaScript?
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19 Answers
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Active
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textarea's rows, and cols attribute in CSS
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107
width and height are used when going the css route.
<!DOCTYPE html>
<html>
&l...
How do i instantiate a JAXBElement object?
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183
When you imported the WSDL, you should have an ObjectFactory class which should have bunch of ...
Understanding the Event Loop
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1: If we are talking about a single-threaded application, then what processes setTimeouts while JS engine accepts more requests and executes them? Isn't that single thread will continue working on other requests? Then who is ...
'git branch -av' showing remote branch that no longer exists
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answered Jan 7 '12 at 1:21
manojldsmanojlds
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How can I disable logging of asset pipeline (sprockets) messages in Ruby on Rails 3.1?
...ends to be quite verbose in the (dev) log by default under Ruby on Rails 3.1 (RC1):
14 Answers
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