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58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
/**********************************************************************
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*
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*
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*
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**********************************************/ /* c8 ignore next 2 */
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((typeof define)[0]=='u'?function(f){module.exports=f(require)}:define)
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(function(require){ var module={} // make module AMD/node compatible...
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/*********************************************************************/
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var object = require('ig-object')
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/*********************************************************************/
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var SetProtoMixin =
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module.SetProtoMixin =
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object.Mixin('SetMixin', 'soft', {
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// Set set operation shorthands...
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unite: function(other=[]){
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return new Set([...this, ...other]) },
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intersect: function(other){
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var test = other.has ?
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'has'
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: 'includes'
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return new Set([...this]
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.filter(function(e){
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return other[test](e) })) },
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subtract: function(other=[]){
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other = new Set(other)
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return new Set([...this]
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.filter(function(e){
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return !other.has(e) })) },
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sort: function(keys=[]){
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keys = (typeof(keys) == 'function'
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|| keys === undefined) ?
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[...this].sort(keys)
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: keys
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var del = this.delete.bind(this)
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var add = this.add.bind(this)
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new Set([...keys, ...this])
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.forEach(function(e){
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if(this.has(e)){
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del(e)
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add(e) } }.bind(this))
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return this },
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})
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SetProtoMixin(Set.prototype)
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/**********************************************************************
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* vim:set ts=4 sw=4 : */ return module })
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