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By-name parameters

1 reply on 1 page. Most recent reply: Nov 28, 2008 2:10 PM by Vladimir Kelman

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Vladimir Kelman

Posts: 46
Nickname: vkelman
Registered: Feb, 2008

By-name parameters Posted: Nov 27, 2008 10:20 AM
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Could you explain please, why are "By-name parameters" called this way - "by-name"?
I understand how they work: they are like a hint to a compiler, that before a function invocation, a parameter myPAR should be expanded into function literal () => myPAR:

myAssert(5 > 3)
will be expanded into
myAssert(() => 5 > 3)


Vladimir Kelman

Posts: 46
Nickname: vkelman
Registered: Feb, 2008

Re: By-name parameters Posted: Nov 28, 2008 2:10 PM
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I asked the same question on Nabble Scala - User forum and got several interesting answers. Maybe it would be good to use them for a footnote in some future redaction of "Programming in Scala"?

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