From my SO Question Archive:
Just curious: Why is the syntax for try catch in C# (Java also?) hard coded for multiple statements? Why doesn’t the language allow:
int i;
string s = DateTime.Now.Seconds % 2 == 1 ? "1" : "not 1";
try
i = int.Parse(s);
catch
i = 0;
The example is for trivial purposes only. I know there’s int.TryParse.
[WayBack] c# – Why does Try-Catch require curly braces – Stack Overflow.
I asked this question partially because of my Delphi background where there are two try statements (one for finally and one for except a.k.a. catch) neither having the braces problem as try/finally/except all are block boundaries.
The most interesting bit was the [WayBack] answer by [WayBack] Eric Lippert (ex C# compiler team, now at Facebook after an intermediate position at Coverty) referring to his [WayBack] Why are braces required in try-catch-finally? | Fabulous adventures in coding blog entry.
The answer and blog entry come down to preventing ambiguity.
His answer reveals that a compound try/catch/finally statement is converted by two try statements like this:
try
{
try
{
XYZ();
}
catch(whatever)
{
DEF();
}
}
finally
{
ABC();
}
This emphasises that catch and finally are conceptually indeed two different things which statistics show.
I need to dig up the numbers (I remember researching this for Java and Delphi code a very long time ago – think Delphi 7 era – and C# code a long time ago – think C# 2 era), but this comment should still hold:
–
–jeroen
The Wiert Corner - irregular stream of stuff 