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19 lines
662 B
19 lines
662 B
7 years ago
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function matrixClone(matrix, defaultValue) {
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return matrix.map(row => {
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return defaultValue === undefined ? row.slice(0) : Array(row.length).fill(defaultValue);
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});
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}
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const deepEqual = require('./deepEqual');
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// Test clone.
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const a = [[1, 2], [1, 4]];
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console.log(deepEqual(matrixClone(a), [[1, 2], [1, 4]]));
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a[0][0] = 4;
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console.log(deepEqual(matrixClone(a), [[1, 2], [1, 4]]) === false);
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console.log(deepEqual(matrixClone([[1]]), [[1]]));
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// Test clone with default value.
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console.log(deepEqual(matrixClone([[1, 2], [1, 4]], 1), [[1, 1], [1, 1]]));
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console.log(deepEqual(matrixClone([[1, 2], [1, 4]], null), [[null, null], [null, null]]));
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