[nem-en] Feature request: Matching !null

[Kamil Skalski]

Why introduce new syntax if this is possible now by:

def a = array ["aa", null, "bbv"];
foreach (x when x != null in a)
    System.Console.WriteLine (x);

maybe 'x is !null' is a few letters shorter, but adding the countless
forms of syntax here and there simply confuse the user and is hard to
remember.

On 7/23/06, vc <vc at rsdn.ru> wrote:
>    Often it is necessary to filter not null elements.
>    Now it is necessary to do it as follows:
>
>    def a = array["a", null, "b"];
>
>    foreach (x in a)
>      when (x != null)
>        System.Console.WriteLine(x);
>
>
>    It will be nice to extend pattern matching that it allows doing so:
>
>    def a = array["a", null, "b"];
>
>    foreach (x is !null in a)
>      System.Console.WriteLine(x);
>
>    Or:
>
>    foreach (x is not null in a)
>      System.Console.WriteLine(x);
>
>    Vlad
>
>
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>


-- 
Kamil Skalski
http://nazgul.omega.pl