2007-01-15

It's not a bug, it's a feature

In my previous post I've said that I found a C# bug, now I've found out that it's not a bug, that behavior is by design.

It's written in the C# standard, around page 88 (110 real page):

[Note: As specified above, the declaration space of a block cannot share names with the declaration spaces of any nested blocks. Thus, in the following example, the F and G methods result in a compile-time error because the name i is declared in the outer block and cannot be redeclared in the inner block. However, the H and I methods are valid since the two i’s are declared in separate non-nested blocks.

class A
{
    void F() {
        int i = 0;
        if (true) {
            int i = 1;
        }
    }
    void G() {
        if (true) {
            int i = 0;
        }
        int i = 1;
    }
    void H() {
        if (true) {
            int i = 0;
        }
        if (true) {
            int i = 1;
        }
    }
    void I() {
        for (int i = 0; i < 10; i++)             H();         for (int i = 0; i < 10; i++)             H();     } }

end note]


I hate compilers that impose stupid constrains.
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