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BUG: Ternary operator in DS def if statement busts compiler #9244

ThomasMahon opened this Issue Nov 13, 2018 · 1 comment


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ThomasMahon commented Nov 13, 2018

Dynamo version


Operating system

Win 10

What did you do?

A simple def in DS with some if statements and a ternary operator.

What did you expect to see?

For DS to break without any rhyme or reason, like it usually does.

What did you see instead?

I saw exactly what I expected, another busted feature of the language. No warnings. No exceptions. Where's the bin?...

Try it for yourself:

def MyDef(x : double)
	return = [Imperative]
		if (x <= 100.0)
			divisor = 10.0;
			number = Math.Ceiling(x / divisor) * divisor;
			return = number < 20.0 ? 20.0 : number;
		else if (x <= 250.0) // No need to check if its greater than 100 otherwise it would pass the first if statement
			divisor = 25.0;
		else // Greater than 300.0
			divisor = 100.0;

		return = Math.Ceiling(x / divisor) * divisor;

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dimven commented Nov 30, 2018

The ternary syntax seems to only work in associative mode. Whenever you put it inside of an imperative scope, the VM fails to compile the DS function.

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