Editing For loop (section)

===Iterator-based for-loops===
{{Further|Foreach loop}}
This type of for-loop is a generalization of the numeric range type of for-loop, as it allows for the enumeration of sets of items other than number sequences. It is usually characterized by the use of an implicit or explicit [[iterator]], in which the loop variable takes on each of the values in a sequence or other data collection. A representative example in [[Python (programming language)|Python]] is:

<syntaxhighlight Lang="python">
for an item in some_iterable_object:
    do_something()
    do_something_else()
</syntaxhighlight>

Where {{code|some_iterable_object}} is either a data collection that supports implicit iteration (like a list of employee's names), or may be an iterator itself. Some languages have this in addition to another for-loop syntax; notably, PHP has this type of loop under the name {{code|for each}}, as well as a three-expression for-loop (see below) under the name {{code|for}}.