Unable to create a static map of functions

[DartBot]

This issue was originally filed by @tomyeh

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What steps will reproduce the problem?

1. DartVM doesn't access the following code.

typedef void Func();
Map<String, Func> funcs = const {
  "foo", () {}
};

What is the expected output? What do you see instead?
A constant map shall be created. But, DartVM throws an exception saying "expression mst be a compile time constatn".

What version of the product are you using? On what operating system?
Dartium 129764 on Linux

[DartBot]

This comment was originally written by [email protected]

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I suppose you wanted to write

"foo": () {}

But other than that -- yes, closures aren't compile time constants, so this is the correct behavior (currently).

Compile-time-constant closures is already mentioned in http://dartbug.com/1652 -- if that is supported, then your example would work.

Also, there is http://dartbug.com/144 which says that static functions might be considered compile-time constants in the future, which might be good enough for a lot of cases (but it is only a subset of http://dartbug.com/1652).

[kasperl]

Added Area-Language, Triaged labels.

[gbracha]

As comment 1 says: the behavior is as intended. In some cases, we may be able to make functions be constant - but not in all. I'm merging this into 1652.

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Set owner to @gbracha.
Removed Type-Defect label.
Added Type-Enhancement, Duplicate labels.
Marked as being merged into #1652.