Dmitry Soshnikov wrote:
Not ideal either. Usually langs provide nice declarative syntax for
such things. E.g. we have[1] the same in the HACK language, and use it
well everyday when need a map.
But this part is of course not for ES6, hope ES7-ish.
[1] http://docs.hhvm.com/manual/en/hack.collections.map.php
We could definitely have Map and Set literals:
const map = {1 => "one", "two" => true, false => "three"};
const set = {<1, "two", false>};
If you still buy Harmony of My Dreams, prefix # before { to get
immutable value-type forms.
I don't mind reusing => in initialiser context where : would go, but
perhaps someone sees a problem I don't. The Set literal hack of {< and
>} seems necessary given object initialiser property assignment
shorthand syntax ({x, y} for {x:x, y:y}). Some kind of hack is required,
yet losing { and } as outermost bracketing characters for Set seems
worse than any digraph or token-pair alternative.
/be
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