Mixed array of numbers and strings

Question

How can I create an interface for an array that accepts both numbers and strings?

Since inside the function [1,'1'], ['1','1'],[1,1] are equivalent (they are joined inside as '1.1'), I can't seem to satisfy the compiler. It gets me TS2087: Could not select overload for 'call' expression.

works for fn([1,1]); and fn(['1','1']); but not mixed values.

Nope, no algebraic types.

Douglas
– Douglas

2014-07-29 22:44:10 +00:00
Commented Jul 29, 2014 at 22:44 — Douglas
– Douglas, Commented Jul 29, 2014 at 22:44

Paleo · Accepted Answer · 2014-07-29 22:32:10Z

2

It's not possible. I suggest to use any[]:

function fn(arr: any[]) {
    alert(JSON.stringify(arr));
}
fn([1, 1]);
fn(['1', '1']);
fn(['1', 1]);

answered Jul 29, 2014 at 22:32

Paleo

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