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Convert String to Uri
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cchenesonccheneson
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In MySQL queries, why use join instead of where?
...rmance Perspective:
Where supported (Oracle 9i+, PostgreSQL 7.2+, MySQL 3.23+, SQL Server 2000+), there is no performance benefit to using either syntax over the other. The optimizer sees them as the same query. But more complex queries can benefit from using ANSI-92 syntax:
Ability to contro...
How can sbt pull dependency artifacts from git?
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answered Sep 26 '11 at 3:40
Kipton BarrosKipton Barros
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Add and remove multiple classes in jQuery
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3 Answers
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Active
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How to replace text between quotes in vi
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183
Use ci", which means: change what inside the double quotes.
You can also manipulate other tex...
relative path in require_once doesn't work
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DarkSide
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answered Mar 20 '11 at 22:09
RaisenRaisen
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Ruby on Rails: How do you add add zeros in front of a number if it's under 10?
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Did you mean sprintf '%02d', n?
irb(main):003:0> sprintf '%02d', 1
=> "01"
irb(main):004:0> sprintf '%02d', 10
=> "10"
You might want to reference the format table for sprintf in the future, but for this particular example '%02d' means to print an integer...
In Postgresql, force unique on combination of two columns
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239
CREATE TABLE someTable (
id serial primary key,
col1 int NOT NULL,
col2 int NOT NUL...
Why do we have map, fmap and liftM?
...onad without also being an instance of Functor.
-- Typeclassopedia, page 33
Edit: agustuss's history of map and fmap:
That's not actually how it happens. What happened was that the type of map was generalized to cover Functor in Haskell 1.3. I.e., in Haskell 1.3 fmap was called map. This chan...