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 UWA week 36 (2nd semester, mid-semester break) ↓
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8:48am Tue 3rd Sep, Daniel J.

If we pass a function into another function as an argument, is it expected that we can call it, or should it be treated as an un-declared variable, ie 0?
function add a b
    return a + b()

function two
    return 2

print add 1 two
Should this produce 3, or should this be a syntax error (cannot call literal)?


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8:51am Tue 3rd Sep, Daniel J.

For clarification, it should be print add(1, two) I should read things more carefully.


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12:56pm Tue 3rd Sep, Mark LN.

Instead of passing a function to another function, the first function can just be evaluated in the parameter expression like this:

function add a b
	return a + b
#
function two
	return 2
#
print add(1, two())


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1:51pm Tue 3rd Sep, Daniel J.

Thanks, I understand that is an option, but I do want to know whether the language actually permits passing references to functions, because the syntax guide suggests it does, and the language description doesn't seem to forbid it.


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8:38pm Tue 3rd Sep, Mark LN.

Yup sure - now you got me thinking about adding that as well! Shouldn't be too hard I guess...

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