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How to create a protocol with methods that are optional?
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251
From the Apple page on "Formal Protocols":
Optional Protocol
methods can be marked as opt...
Is there a built-in method to compare collections?
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15 Answers
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How to read json file into java with simple JSON library
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13 Answers
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
...d to go and rename the model declaration file manually.
Edit:
In Rails 3.1 & 4, ActiveRecord::Migration::CommandRecorder knows how to reverse rename_table migrations, so you can do this:
class RenameOldTableToNewTable < ActiveRecord::Migration
def change
rename_table :old_table_name,...
Why are functions and methods in PHP case-insensitive?
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edited Jun 20 at 9:12
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answered Jun 10 '11 at 5:52
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What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?
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Generally speaking:
F5 may give you the same page even if the content is changed, because it m...
How to replace spaces in file names using a bash script
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Invoking JavaScript code in an iframe from the parent page
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Can vim monitor realtime changes to a file
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You can :set autoread so that vim reads the file when it changes. However (depending on your p...