Exploring Typescript: Is there a distinction between the two square bracket notations? After running some tests, it appears they function equivalently. Any insights would be appreciated!
interface test {
a: string;
b: string;
}
const x: test[] = [{a: "aaaa", b: "bbbb"}]
const y: [test] = [{a: "aaaa", b: "bbbb"}]
According to @VLAZ, x represents an Array, while y is a representation of a Tuple.
This distinction becomes evident even in this straightforward example.
interface evaluation {
alpha: string;
beta: string;
}
const x: evaluation[] = [{alpha: "aaaa", beta: "bbbb"}]
const y: [evaluation] = [{alpha: "aaaa", beta: "bbbb"}]
x.push({alpha: "a1", beta: "b1"}); // executes without issue
y.push({alpha: "a1", beta: "b1"}); // executed without error
const exampleA = x[1]; // runs smoothly
const exampleB = y[1]; // compilation error
// Tuple type '[evaluation]' with length '1' does not have any elements at index '1'.
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