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Inspired by another question asking about the missing Zip function:
Why is there no ForEach extension method on the IEnumerable interface? Or anywhere? The only class that gets a ForEach method is List<>. Is there a reason why it's missing, maybe performance?
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The IEnumerator interface provides iteration over a collection-type object in a class. The IEnumerable interface permits enumeration by using a foreach loop.
Convert a foreach loop to LINQ refactoringPlace your cursor in the foreach keyword. Press Ctrl+. to trigger the Quick Actions and Refactorings menu. Select Convert to LINQ or Convert to Linq (call form).
IEnumerable is an interface defining a single method GetEnumerator() that returns an IEnumerator interface. It is the base interface for all non-generic collections that can be enumerated. This works for read-only access to a collection that implements that IEnumerable can be used with a foreach statement.
There is already a foreach statement included in the language that does the job most of the time.
I'd hate to see the following:
list.ForEach( item => { item.DoSomething(); } ); Instead of:
foreach(Item item in list) { item.DoSomething(); } The latter is clearer and easier to read in most situations, although maybe a bit longer to type.
However, I must admit I changed my stance on that issue; a ForEach() extension method would indeed be useful in some situations.
Here are the major differences between the statement and the method:
ForEach() is at compile time (Big Plus!)Those are all great points made by many people here and I can see why people are missing the function. I wouldn't mind Microsoft adding a standard ForEach method in the next framework iteration.
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