[#GROOVY-1077] operator overloading

groovy

operator overloading

Created: 30/Sep/05 06:01 AM Updated: 26/Apr/08 08:01 AM

Component/s:

syntax

Affects Version/s:

1.0

Fix Version/s:

2.0

Time Tracking:

Not Specified

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To keepup with next generation programming languages (such as C# 3.0), groovy would benefit from the ability to specify new operators (aka operator overloading, like C++'s "operator" keyword).

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Guillaume Laforge - 15/Nov/05 08:35 AM

Rui,

You mean having a nice syntax for operator overloading? like:

operator Foo + (Foo foo)

Or you mean also being able to add new and funny operators like <~~=#=~~> or or whatever comes to mind?

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Rui Lopes - 15/Nov/05 08:51 AM

Any kind of operator syntax would be better, but harder to implement, imho. Specially regarding name-style operators, like "instanceof", e.g.:

operator Foo handles (Foo foo)

and using it would something like

"a handles foo"

Rui

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Guillaume Laforge - 15/Nov/05 09:08 AM

We'll provide a syntax for operator overloading.
But I don't think we'll be able to create custom operators, either with special characters or name-style operators.
At least not for 1.0 or 1.x...

But I think it might be interesting considering that for Groovy 2.0
And that'd be pretty neat to write custom DSLs!
I'd love to support that!

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Rui Lopes - 15/Nov/05 09:18 AM

yes, definitely for 2.0, hence the priority level "Minor"

I think the sql-ish syntax sugar introduced in C# regarding working with collections would be a starting point for name-style operator overloading.