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How can I rename a database column in a Ruby on Rails migration?
...
$ > rails g migration ChangeColumnName
which will create a migration file similar to:
class ChangeColumnName < ActiveRecord::Migration
def change
rename_column :table_name, :old_column, :new_column
end
end
...
Writing a git post-receive hook to deal with a specific branch
...| exit 0
# Node standard installation
export PATH="$PATH:/c/Program Files/nodejs"
# Check that npm exists
command_exists npm || {
echo >&2 "husky > can't find npm in PATH, skipping precommit script in package.json"
exit 0
}
# Export Git hook params
export ...
Open Source Alternatives to Reflector? [closed]
...owse methods, properties and even source code for a C# lib without the PDB file.
– mathijsuitmegen
Mar 2 '11 at 13:08
6
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What are the rules about using an underscore in a C++ identifier?
...and identifiers which are always reserved either for any use or for use as file scope identifiers.
All identifiers that begin with an underscore and either an uppercase letter or another
underscore are always reserved for any use.
All identifiers that begin with an underscore are always ...
How do I view the SQL generated by the Entity Framework?
...logger.
See chapters "Interceptors" and "Logging Database Operations" to a File here
<interceptors>
<interceptor type="System.Data.Entity.Infrastructure.Interception.DatabaseLogger, EntityFramework">
<parameters>
<parameter value="C:\Temp\LogOutput.txt"/>
...
Is it acceptable and safe to run pip install under sudo?
... I've come across frequent permission denied errors while writing to log files or site-packages.
6 Answers
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Which is the correct shorthand - “regex” or “regexp” [closed]
...tp://groups.google.com/group/mod.sources/msg/ab37bf1ead7209ec?)
The Jargon File listed "regexp (also regex, reg-ex)" as early as 1991. (http://groups.google.com/group/misc.misc/msg/e75ca9cb78220ea0?)
JavaScript and Ruby both have Regexp or RegExp in their standard libraries.
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When to use the JavaScript MIME type application/javascript instead of text/javascript?
...roxies anyway, but that was the intent.)
Therefore the exact bytes of the file must be preserved exactly, which makes it a binary application type and not technically character-based text.
For the same reason, application/xml is officially preferred over text/xml: XML has its own in-band charset s...
Detecting endianness programmatically in a C++ program
...one at compile time (specially for performance reason) by using the header files available from the compiler or create your own. On linux you have the header file "/usr/include/endian.h"
share
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imp...
Using regular expression in css?
...This was in a recommendation for CSS 2.1; it is supported by IE 7, Opera 9 etc.. Source: developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors
– Mike S
Jun 10 '14 at 20:38
2...