I come from Haskell, so please excuse any functional programming idiosyncracies I have :)

In Haskell, I have a datatype for representing so called terms which looks like:

    data Term = Var Char | Op Char [Term]

i.e. a Term is a variable (denoted by an Int) or an operation (whose name is also denoted by an int), applied to a list of its arguments.  For example,

    f(g(x,y),a(),x) is represented by Op 'f' [Op 'g' [Var 'x',Var 'y'],Op 'a' [], Var 'x]

Now, the reason I am writing in D is twofold.  First, I want to learn the D language, and second I really need pointers to reduce certain complexities in the operations (Haskell does not have observable sharing).

On Friday, 27 December 2013 at 00:23:58 UTC, Jonathan wrote:
> I come from Haskell, so please excuse any functional programming idiosyncracies I have :)
>
> In Haskell, I have a datatype for representing so called terms which looks like:
>
>     data Term = Var Char | Op Char [Term]
>
> i.e. a Term is a variable (denoted by an Int) or an operation (whose name is also denoted by an int), applied to a list of its arguments.  For example,
>
>     f(g(x,y),a(),x) is represented by Op 'f' [Op 'g' [Var 'x',Var 'y'],Op 'a' [], Var 'x]
>
> Now, the reason I am writing in D is twofold.  First, I want to learn the D language, and second I really need pointers to reduce certain complexities in the operations (Haskell does not have observable sharing).

Could you please clarify the question? I did not understand what you wanted to ask.

Found your other post nwm.