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Mongo: find items that don't have a certain field
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171
Yeah, it's possible using $exists:
db.things.find( { a : { $exists : false } } ); // return i...
Using isKindOfClass with Swift
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answered Jun 14 '14 at 13:29
KPMKPM
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Why not abstract fields?
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105
You can do what you described by having a final field in your abstract class that is initialis...
Using the field of an object as a generic Dictionary key
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151
By default, the two important methods are GetHashCode() and Equals(). It is important that if ...
Why are `private val` and `private final val` different?
...that private val and private final val are same, until I saw section 4.1 in Scala Reference:
2 Answers
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Express-js wildcard routing to cover everything under and including a path
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112
I think you will have to have 2 routes. If you look at line 331 of the connect router the * in...
How to navigate through a vector using iterators? (C++)
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112
You need to make use of the begin and end method of the vector class, which return the iterato...
jQuery / Javascript - How do I convert a pixel value (20px) to a number value (20)
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185
No jQuery required for this, Plain Ol' JS (tm) will do ya,
parseInt(a, 10);
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Is it possible to pull just one file in Git?
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155
You can fetch and then check out only one file in this way:
git fetch
git checkout -m <rev...