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How to detect if a function is called as constructor?
...thin the function to make a reliable inference.
Looking at the ECMAScript 3rd edition spec, the steps taken when new x() is called are essentially:
Create a new object
Assign its internal [[Prototype]] property to the prototype property of x
Call x as normal, passing it the new object as this
If ...
How can you automatically remove trailing whitespace in vim
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13 Answers
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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
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31 Answers
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How to load db:seed data into test database automatically?
I'm attempting to use the new standard way of loading seed data in Rails 2.3.4+, the db:seed rake task.
8 Answers
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Command-line svn for Windows?
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Newer versions of TortoiseSVN contain a console svn client, but by default the corresponding op...
Facebook Open Graph not clearing cache
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Go to http://developers.facebook.com/tools/debug
Enter the URL following by fbrefresh=CAN_BE_...
MySQL with Node.js
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edited Feb 2 '15 at 18:53
chenrui
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answered Apr ...
How much size “Null” value takes in SQL Server
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edited Sep 16 '10 at 23:54
answered Sep 16 '10 at 22:05
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What is the behavior difference between return-path, reply-to and from?
...any.com>
Subject: Super simple email
Reply-To: <coolstuff-threadId=123@mymailinglist.com>
This is a very simple body.
Now, let's say you are going to send it from a mailing list, that implements VERP (or some other bounce tracking mechanism that uses a different return-path). Lets say ...
Run a single migration file
... of the ruby file:
rails console
>> require "db/migrate/20090408054532_add_foos.rb"
>> AddFoos.up
Note: newer versions of rails may require AddFoos.new.up rather than AddFoos.up.
An alternative way (without IRB) which relies on the fact that require returns an array of class names:
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