## D - Operator

• nicO (18/31) Sep 21 2001 I continue hier the speach.
``` For that matter, ** won't work because the is already an infix and
binary * operator.

x ** y  =>  x * (*y)

I agree with the idea though.  I like perl because of it's liberal use
of infix and unary operations.  I like C++ because it let me do the
same, but it would be nice to have more operator symbol at my disposal,
and to be and to mess with precedence.  Since before first grade we are
taught infix operations.  They feel much more natural for anything
remotely numeric.

Dan

I continue hier the speach.

inside Java. It the same for D.

But what about creating "new" operator to avoid very heavy notation in
scientific calculation for exemple ?

The key word "operator" from the c++ could be used. It's a 2 input
operator. We can imagine .* for matrix computation (like in mathlab ?).

It will be nice to define mathemical propertites like :
- if a op b = b op a
- if (a op b) op c = a op (b op c)
- if a op1 (b op2 c) = (a op1 b) op2 (a op1 c) -- imagine op1=* and
op2=+
- if a nul object (e) exist a op e = e op a = a
- Operator priority : a op1 b op2 c = a op1 ( b op2 c) or a op1 b op2 c
= (a op1 b) op2 c

So we can make some "extend" to the language without destoying the
coherence of D.

nicO
```
Sep 21 2001