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How to set auto increment primary key in PostgreSQL?
...hould always be using a primary key on your table because postgresql internally uses hash table structures to increase the speed of inserts, deletes, updates and selects. If a primary key column (which is forced unique and non-null) is available, it can be depended on to provide a unique seed for t...
How to apply unmerged upstream pull requests from other forks into my fork?
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You can do it manually quite easily:
add the other fork as a remote of your repo:
git remote add otherfork git://github.com/request-author/project.git
fetch his repo's commits
git fetch otherfork
You have then two options to apply the ...
Create PostgreSQL ROLE (user) if it doesn't exist
.... The DO statement uses plpgsql as default procedural language. The syntax allows to omit the explicit declaration:
DO [ LANGUAGE lang_name ] code
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lang_name
The name of the procedural language the code is written in. If
omitted, the default is plpgsql.
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How do I do a HTTP GET in Java? [duplicate]
... cletus's answer (using Apache HttpClient) is that HttpClient can automatically handle redirects and proxy authentication for you. The standard Java API classes that you use here don't do that for you. On the other hand, using the standard API classes has the advantage that you don't need to include...
Why is C so fast, and why aren't other languages as fast or faster? [closed]
...eaving the former assertion for another post, what is special about C that allows it to be faster than other languages? Or put another way: what's to stop other languages from being able to compile down to binary that runs every bit as fast as C?
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How do I get a value of a using jQuery?
...mment under his name you will notice that he did not write an attribute at all, it was <div 'item1'>, I guessed wrong apparently.
– Francisco Aquino
Dec 17 '09 at 12:19
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Xcode + remove all breakpoints
Is there any way to remove all the breakpoints in Xcode?
12 Answers
12
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How can I rename a database column in a Ruby on Rails migration?
...te of self.up, so "if you need or do something else or do nothing" isn't really recommended. Just do: rename_column :table_name, :new_column, :old_column
– Luke Griffiths
Aug 29 '11 at 15:21
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Git add all files modified, deleted, and untracked?
Is there a way to add all files no matter what you do to them whether it be deleted, untracked, etc? like for a commit. I just don't want to have to git add or git rm all my files every time I commit, especially when I'm working on a large product.
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How to convert from System.Enum to base integer?
... enum can have different underlying types (int, long, byte...).
More formally: System.Enum has no direct inheritance relationship with Int32 (though both are ValueTypes), so the explicit cast cannot be correct within the type system
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