https://bugzilla.novell.com/show_bug.cgi?id=378189
Summary: gmcs requires void-returning invocation in lambda
expression
Product: Mono: Compilers
Version: SVN
Platform: x86-64
OS/Version: Ubuntu
Status: NEW
Severity: Normal
Priority: P5 - None
Component: C#
AssignedTo: mono-bugs@lists.ximian.com
ReportedBy: [EMAIL PROTECTED]
QAContact: mono-bugs@lists.ximian.com
Found By: ---
I can't think up a better summary. This code fails to compile:
>>>>
using System;
using System.Collections;
using System.Collections.Generic;
public static class ext
{
static public void Apply<T>(IEnumerable<T> a, Action<T> fn)
{
foreach (T ai in a)
fn(ai);
}
}
public class action
{
public static void Main(string[] argv)
{
ArrayList list = new ArrayList();
ext.Apply(argv, str => list.Add(str));
}
}
<<<<
Failing with:
action.cs(19,21): error CS1502: The best overloaded method match for
`ext.Apply<string>(System.Collections.Generic.IEnumerable<string>,
System.Action<string>)' has some invalid arguments
action.cs(7,28): (Location of the symbol related to previous error)
action.cs(19,21): error CS1503: Argument 2: Cannot convert type `lambda
expression' to `System.Action<string>'
Compilation failed: 2 error(s), 0 warnings
It looks like it was this change:
http://anonsvn.mono-project.com/viewcvs/trunk/mcs/mcs/lambda.cs?rev=99156&r1=98957&r2=99156
..which confuses me. Why can't an invocation that returns a non-void type be
used here?
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