Where can I find documentation for Scala's delayed function calls?
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by Geo
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Published on 2009-12-15T17:26:23Z
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2010/05/16
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I saw a delayed example in David Pollak's "Beginning Scala". I tried to adapt that, by trial and error. Here's what I have:
def sayhello() = {
println("hello")
}
def delaying(t: => Unit):Unit = {
println("before call")
t
println("after call")
}
delaying(sayhello())
How would you delay a function/method that takes parameters? Why can't I use parantheses when I call t? Where can I find more documentation on delaying functions?
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