Does anyone know of a JavaScript data structure that functions similarly to ListOrderedMap? I need it to have the capability to add an object at a specific index, retrieve the index for a given object, and lookup an object by its id. Unfortunately, all the libraries I've come across so far do not offer the ability to add an object at a designated index.
Isn't it interesting? JavaScript offers robust support for arrays, collections with keys, and their combinations.
function LMA() {
this.objects = {}
this.indices = []
}
LMA.prototype.addToCollection = function(myObject, identifier, position) {
this.objects[identifier] = myObject
this.indices[position] = identifier
}
LMA.prototype.getObjectByIndex = function(position) {
return this.objects[this.indices[position]]
}
Putting it into practice:
? example = new LMA
? example.addToCollection("xyz", "ABCD", 5)
? example.objects.ABCD
xyz
? example.getObjectByIndex(5)
xyz
When it comes to data structures, JavaScript lacks the functionality needed for some tasks. One alternative is to turn to GWT and leverage the Java source code found in ListOrderedMap.java.
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