HyperMath

Multiple Returns

Multiple Returns

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Multiple Returns

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HyperMath can return more than one value from a function.  This is done by returning a comma separated list of values (the function returns at that point, too):

> function foo(angle) return Cos(angle), Sin(angle); end

> print( foo(1) )     // returns 2 values...

0.54030230586814        0.8414709848079

>

> c,s = foo(3.142/3)  // assign the values to variables

>

> print(c,s)

0.49988240461137        0.86609328686923

It is possible to assign only the first few outputs to variables.  The rest of the returns are ignored.

> c = foo(3.142/3)

> print(c)

0.49988240461137

If extra variables are assigned on the left hand side, those are set to nil.

> c,s,z = foo(3.142/3)

> print(c,s,z)

0.49988240461137        0.86609328686923        nil

Note

When data of type table is returned, a reference to it is returned instead of a copy.  To return a copy, use CopyTable() function. This matters when returning global variables.