I'm trying to figure out how I can extend my usage of set and has so that I can add other indexes to the set.
Currently, I'm creating a set of identifiers from an existing object which works just fine, but I'd also like to add the other indexes in the set if possible so that I can check first to see if the set has the identifier I'm looking for, and then if so, i can do a comparison on the quantity (and eventually other indexes too)
Is there a way to extend this approach to add the other index(es) to the set and still use has in a performant way? If not, what would be a better approach to achieve what I want here?
const testFunc = (rows) => {
let itemSet = new Set(vm.$data.categoryItems.map((category) => category.category_identifier))
category_ID = 1234;
if (itemSet.has(category_ID)) {
qty = 10;
if(qty > itemSet.cagegory_qty){
console.log('good')
}
}
}
var vm =
new Vue({
data: {
parsedResults: [],
categoryItems:[
{
category_identifier:1234,
category_qty:50,
available_date:"2021-11-02",
},
{
category_identifier:2345,
category_qty:15,
available_date:"2021-11-02",
},
{
category_identifier:3456,
category_qty:25,
available_date:"2021-11-02",
},
{
category_identifier:6533,
category_qty:2,
available_date:"2021-11-02",
}
]
},
computed: {
getTestSet() {
setRows = testFunc(this.rows)
this.parsedResults = setRows
return this.parsedResults
}
}
})<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>You can use a Map instead where the key is the identifier and the value can be the object if you want to use multiple attributes in it:
const itemMap = new Map(
vm.$data.categoryItems.map(category => [category.category_identifier, {...category}])
)
To check if the Map has a certain key, you can use Map#has.
To get an attribute of a certain object by the identifier, you can use Map#get.
if (itemMap.has(category_ID)) {
const qty = 10;
if(qty > itemMap.get(category_ID).category_qty){
console.log('good')
}
}