Question

We use for or foreach to loop through collections and process each entries.

Is there any alternative in all those new lambda functions for collections in C#?

Traditional way of doing

foreach(var v in vs)
{
  Console.write(v);
}

Is there anything like?

vs.foreach(v => console.write(v))

Answer 1

List has the ForEach method, however, IEnumerable does not.

There are a number of questions / answers regarding this. I think the main reason it was not implemented in IEnumerable though is that Linq on Enumerables is “meant” to be side effect free as it’s a querying language.

Eric Lippert explains his thoughts on his blog.

http://blogs.msdn.com/ericlippert/archive/2009/05/18/foreach-vs-foreach.aspx