NAME
	indices - return an array of all index possible for a value

SYNTAX
	mixed *indices(string|array|mapping|list foo);

DESCRIPTION
	Indices returns an array of all values you can use as index when
	indexing foo. For strings and arrays this is simply an array of the
	ascending numbers. For mappings and lists, the array may contain any
	kind of value.

SEE ALSO
	values
