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TypeScript var VS let (2)

var

ts

ts
function sumMatrix(matrix: number) {
    var sum = 0;
    for (var i = 0; i < matrix.length; i++) {
        var currentRow = matrix;
        for (var i = 0; i < currentRow.length; i++) {
            sum += currentRow;
        }
    }

    return sum;
}

js

js
function sumMatrix(matrix) {
    var sum = 0;
    for (var i = 0; i < matrix.length; i++) {
        var currentRow = matrix;
        for (var i = 0; i < currentRow.length; i++) {
            sum += currentRow;
        }
    }
    return sum;
}

let

ts

ts
function sumMatrixC(matrix: number) {
    let sum = 0;
    for (let i = 0; i < matrix.length; i++) {
        let currentRow = matrix;
        for (let i = 0; i < currentRow.length; i++) {
            sum += currentRow;
        }
    }

    return sum;
}

js

js
function sumMatrixC(matrix) {
    var sum = 0;
    for (var i_1 = 0; i_1 < matrix.length; i_1++) {
        var currentRow = matrix[i_1];
        for (var i_2 = 0; i_2 < currentRow.length; i_2++) {
            sum += currentRow[i_2];
        }
    }
    return sum;
}

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