I encountered a code snippet like the one below
let failures: Map<string, Array<string>> = new Map([
['1', ['a', 'b']],
['2', ['c', 'd']],
['3', ['e', 'f']]
])
Now suppose I have a specific key value as follows
const keyItem = '2'.
Given this keyItem, how can I remove 'c' from the array of strings in the failures map?
To retrieve the original array, you can utilize failures.get(keyItem), then eliminate c using either Array.prototype.splice() or Array.prototype.filter(). Finally, use
failures.set(keyItem, modifiedArray)let failuresMap: Map<string, Array<string>> = new Map([
['1', ['a', 'b']],
['2', ['c', 'd']],
['3', ['e', 'f']]
])
const keyItemToUpdate: string = '2'
const updatedArray: Array<string> = (failuresMap.get(keyItemToUpdate) ?? [])
.filter(character => character !== "c")
failuresMap.set(keyItemToUpdate, updatedArray)
console.log([...failuresMap])
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