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started work on ObjectWithAutoKeys(..)...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
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Alex A. Naanou 2020-12-26 07:27:23 +03:00
parent 7363662c38
commit 2e66cb3083
1 changed files with 28 additions and 0 deletions
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28
containers.js
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@ -175,6 +175,34 @@ object.Constructor('UniqueKeyMap', Map, {
})
//---------------------------------------------------------------------
// XXX should this be a map???
// XXX make two variants: ordered and unordered...
var ObjectWithAutoKeys =
module.ObjectWithAutoKeys =
object.Constructor('ObjectWithAutoKeys', {
__last_key: null,
__new_key__: function(value){
return (this.__last_key = (this.__last_key || -1) + 1) },
//
// .push(value)
// -> key
//
// .push(value, ..)
// -> [key, ..]
push: function(...values){
var that = this
var res = values
.map(function(value){
that[that.__new_key__(value)] = value })
return values.length == 1 ?
res.pop()
: res },
})
/**********************************************************************