one

# given [2..5]

$array->one(fun ($value) {
  $value == 5; # 1; true
});

$array->one(fun ($value) {
  $value == 6; # 0; false
});

The one method returns true if only one of the elements in the array meet the criteria set by the operand and rvalue. This method returns a Data::Object::Number object.

one(CodeRef $arg1, Any $arg2) : NumObject

method