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How does Rails keep track of which migrations have run for a database?
... row from schema_migrations.
For example, running a migration file named 20120620193144_create_users.rb will insert a new row with a version of 20120620193144 into the schema_migrations table.
You are free at any point to introduce migrations with earlier versions. Rails will always run any new mi...
bash assign default value
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209
Use a colon:
: ${A:=hello}
The colon is a null command that does nothing and ignores its arg...
How to style a JSON block in Github Wiki?
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edited Feb 15 '13 at 20:50
answered Feb 15 '13 at 19:24
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How to make a class conform to a protocol in Swift?
...om NSObject' to me.
– Roy Falk
Mar 30 '16 at 15:28
@RoyFalk I mean a compile warning was sufficient over an error... Y...
SVN encrypted password store
... storage to cache the passwords.
See: http://blogs.collab.net/subversion/2009/07/subversion-16-security-improvements/
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Use of an exclamation mark in a Git commit message via the command line
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SiegeXSiegeX
114k2020 gold badges127127 silver badges151151 bronze badges
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Heatmap in matplotlib with pcolor?
... is my python implementation of the flowingdata NBA heatmap.
updated:1/4/2014: thanks everyone
# -*- coding: utf-8 -*-
# <nbformat>3.0</nbformat>
# ------------------------------------------------------------------------
# Filename : heatmap.py
# Date : 2013-04-19
# Updated ...
Can I call an overloaded constructor from another constructor of the same class in C#?
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edited Jun 12 '09 at 6:56
aJ.
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Why is there an injected class name?
...to the current instantiation. See DR 176 for a change between C++98 and C++03 that clarified that.
The idea of the injected class name was present in C++98, but the terminology was new for C++03.
C++98 says:
A class-name is inserted into the scope in which it is declared immediately after the ...
How to make the overflow CSS property work with hidden as value
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402
Ok if anyone else is having this problem this may be your answer:
If you are trying to hide ab...