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Type Built-ins

Function	Description	OPA	Wasm	Swift	Java
`is_array`	`result := is_array(x)` Returns `true` if the input value is an array. Arguments: `x` (any) input value Returns: `result` (boolean) `true` if `x` is an array, `false` otherwise.	v0.17.0	✓	0.0.1	0.1.0
`is_boolean`	`result := is_boolean(x)` Returns `true` if the input value is a boolean. Arguments: `x` (any) input value Returns: `result` (boolean) `true` if `x` is an boolean, `false` otherwise.	v0.17.0	✓	0.0.1	0.1.0
`is_null`	`result := is_null(x)` Returns `true` if the input value is null. Arguments: `x` (any) input value Returns: `result` (boolean) `true` if `x` is null, `false` otherwise.	v0.17.0	✓	0.0.1	0.1.0
`is_number`	`result := is_number(x)` Returns `true` if the input value is a number. Arguments: `x` (any) input value Returns: `result` (boolean) `true` if `x` is a number, `false` otherwise.	v0.17.0	✓	0.0.1	0.1.0
`is_object`	`result := is_object(x)` Returns true if the input value is an object Arguments: `x` (any) input value Returns: `result` (boolean) `true` if `x` is an object, `false` otherwise.	v0.17.0	✓	0.0.1	0.1.0
`is_set`	`result := is_set(x)` Returns `true` if the input value is a set. Arguments: `x` (any) input value Returns: `result` (boolean) `true` if `x` is a set, `false` otherwise.	v0.17.0	✓	0.0.1	0.1.0
`is_string`	`result := is_string(x)` Returns `true` if the input value is a string. Arguments: `x` (any) input value Returns: `result` (boolean) `true` if `x` is a string, `false` otherwise.	v0.17.0	✓	0.0.1	0.1.0
`type_name`	`type := type_name(x)` Returns the type of its input value. Arguments: `x` (any) input value Returns: `type` (string) one of "null", "boolean", "number", "string", "array", "object", "set"	v0.17.0	✓	0.0.1	0.1.0