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I see these used interchangeably. What's the difference?
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foreach is useful when iterating all of the items in a collection. for is useful when iterating overall or a subset of items. The foreach iteration variable which provides each collection item, is READ-ONLY, so we can't modify the items as they are iterated. Using the for syntax, we can modify the items as needed.
A foreach loop is used to iterate over a list and the variable holds the value of the elements of the list one at a time. It is majorly used when we have a set of data in a list and we want to iterate over the elements of the list instead of iterating over its range.
In each iteration, you can process each element of the list separately. This is why the for loop statement is sometimes referred to as foreach loop. In Perl, the for and foreach loop are interchangeable, therefore, you can use the foreach keyword in where you use the for keyword.
There is no difference. From perldoc perlsyn:
The
foreachkeyword is actually a synonym for theforkeyword, so you can useforeachfor readability orforfor brevity.
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I see these used interchangeably.
There is no difference other than that of syntax.
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