Semantics of apply

[Praki]

Hi,

I am Cat-noob and trying out some examples in the Javascript
implementation. apply is documented as "Applies a function on the
stack to the rest of the stack.". However, "2 4 6 [dup *] apply"
produces" 2 4 36". It is clearly not applying "dup *" to the "rest of
the stack".

So, what exactly is apply expected to?

Thanks,

[Christopher Diggins]

Sorry about the confusion. It should be rephrased as "Apply applies a
function to the stack, after it is first removed". This is to
distinguish itself from combinators (e.g. "m") that are left on the
stack when applied, which is admittedly the exception not the rule.

Hope this helps.

Christopher

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[Grahack]

'dup *' is applied to the rest of the stack, but only consumes one value and produces one (the square of the value consumed). Not to be confused with 'map'.