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Best way to merge two maps and sum the values of same key?
...trait
trait Monoid[M] {
def zero: M
def op(a: M, b: M): M
}
The Map based implementation of the Monoid trait that merges two maps.
val mapMonoid = new Monoid[Map[Int, Int]] {
override def zero: Map[Int, Int] = Map()
override def op(a: Map[Int, Int], b: Map[Int, Int]): Map[Int, Int] =
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AVAudioPlayer throws breakpoint in debug mode
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Vim Insert Mode on Mac OS X
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MySQL show current connection info
...rminal session but I don't know what server I am connected to, or what database I am connected to.
3 Answers
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What is the 'cls' variable used for in Python classes?
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Where does Jenkins store configuration files for the jobs it runs?
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Why is MySQL's default collation latin1_swedish_ci?
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What is the “-d” in “npm -d install”?
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PHP Difference between array() and []
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Collection versus List what should you use on your interfaces?
..."msdn.microsoft.com/en-us/library/0fss9skc.aspx"... wow, seems I'm not off base after all :)
– Timothy Khouri
Nov 8 '08 at 2:54
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