Contract
Return type	wob
Parameter key	Default value	Type
ordering_method	object_less_or_equal	var

Water Contract
<method is_sorted ordering_method=object_less_or_equal/>

See also: sort

If the vector fields of _subject are ordered according to the predicate of the first argument, then the call to is_sorted result=true otherwise it returns false. If a vector is unordered, it can be ordered using sort is_sorted just tests to see if the vector actually is sorted. It is much faster than sort. The sorting predicate defaults to object_less

<vector 15 16 17/>.<is_sorted/>

true

<vector 94 16 17/>.<is_sorted/>

false

<vector 94 93 92/>.<is_sorted number.more/>

true

4.<is_sorted/>

true

Above returns true because 4 is of zero length and any zero length object is considered to be sorted regardless of predicate.