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How to express a NOT IN query with ActiveRecord/Rails?
Just to update this since it seems a lot of people come to this, if you are using Rails 4 look at the answers by Trung Lê` and VinniVidiVicci.
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Should methods that throw RuntimeException indicate it in method signature?
For example, many methods in frameworks/JDK might throw
7 Answers
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Captured variable in a loop in C#
I met an interesting issue about C#. I have code like below.
9 Answers
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Multiple inheritance/prototypes in JavaScript
I've come to a point where I need to have some sort of rudimentary multiple inheritance happening in JavaScript. (I'm not here to discuss whether this is a good idea or not, so please kindly keep those comments to yourself.)
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What is null in Java?
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Is null an instance of anything?
No, there is no type which null is an instanceof.
15.20.2 Type Comparison Operator instanceof
RelationalExpression:
RelationalExpression instanceof ReferenceType
At run time, the result o...
What is the difference between Debug and Release in Visual Studio?
What is the difference between Debug and Release in Visual Studio?
10 Answers
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Need for predictable random generator
...blem is I got very bad real life results — sometimes players get 3 crits in 5 hits, sometimes none in 15 hits. Battles are rather short (3-10 hits) so it's important to get good random distribution.
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How do you share constants in NodeJS modules?
Currently I'm doing this:
13 Answers
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Why is SELECT * considered harmful?
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There are really three major reasons:
Inefficiency in moving data to the consumer. When you SELECT *, you're often retrieving more columns from the database than your application really needs to function. This causes more data to move from the database server t...
Xcode warning: “Multiple build commands for output file”
I am getting an error like this:
23 Answers
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