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The `exists()` function checks the existence of the given key within the
given object. If the object contains the given key, `true` is returned,
otherwise `false`.
If the object argument is not an object, `false` is returned as well.
The key argument is converted to a string in case it is not one already.
-- Testcase --
{%
let obj = {
"foo": true,
"bar": false,
"false": null,
"123": "a number"
};
printf("%.J\n", [
exists(true, "test"),
exists(obj, "doesnotexists"),
exists(obj, "foo"),
exists(obj, "bar"),
exists(obj, !true),
exists(obj, 123)
]);
%}
-- End --
-- Expect stdout --
[
false,
false,
true,
true,
true,
true
]
-- End --
|
