I want to search through an array of tuples to find a specific value in the first index, and if there is a match, I need to return the value in the second index of the matching tuple

I am dealing with an array of tuples:

var tuparray: [string, number][];
 tuparray = [["0x123", 11], ["0x456", 7], ["0x789", 6]];

const addressmatch = tuparray.includes(manualAddress);

In my function, I aim to verify if the tuparray includes a user input (string) called manualAddress. Should it discover a match in any of the tuples, it should output the value from the number at [1] position of the tuple.

if (addressmatch){
console.log("address qualifies for [matched tuple number here]");

I would greatly appreciate assistance on this matter!

javascripttypescripttuples

Answer №1

To locate the desired element in the list, utilize the find() method on the given Array with a lambda function to evaluate the match.

var tuparray = [["0x123", 11], ["0x456", 7], ["0x789", 6]];

function checkAddress(targetAddress) {
    const result = tuparray.find(item => item[0] == targetAddress)
    
    if (result) {
        console.log(`The address qualifies for ${result[1]}`)
    } else {
        console.log(`Not found`)
    }
}

checkAddress('0x123')
checkAddress('0x456')
checkAddress('0x111')

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