Exception filters and pattern matching syntax

[dsaf]

F# treats exception handling as a specialized case of pattern matching:

F# - try:

try
    expression
with
    | pattern -> expression
    | pattern -> expression

F# - match:

match expression
with
    | pattern -> expression
    | pattern -> expression

On the surface it seems like a good idea and made me question whether this was really a good moment to add exception filtering to C# syntax.

C# - try:

try { … }
catch (MyException e) when (myfilter(e))
{
    …
}

C# - match: ? What options do we have now:

• try-catch and switch diverge in terms of syntax?
• expression syntax is created for try-catch as well?

PS: a bit trollish, but has a point - http://tomasp.net/blog/2015/csharp-pattern-matching/index.html

[gafter]

Love that link.

[gafter]

Closing. We cannot change existing syntax.