If one deploys a sub with optional-positional parameters,
one can't add a required parameter later without breaking
any existing calls that make use of any o-p parameters.
Right?
A6: "An rw parameter may only default to a valid lvalue. If
you find yourself wanting it to default to an ordinary valu
How would one most nicely code what I'll call
a lazy pipeline, such that the first result
from the final element of the pipeline can
appear as soon as the first result has been
processed from the intervening elements?
--
ralph
First, I'd like to confirm I've understood
C and C right:
1. C dynamically scopes changes to a
variable's value to the enclosing block.
It does not dynamically scope the name.
The variable can obviously be a global.
It can also make sense if it is lexical.
Is the latter currently al
> [proposal for delegation syntax, drawing from Class::Delegation]
>
> If something is part of the method interface, it ought to be declared
> as a method.
>
> method steer is really(Wheel) is also(???) { .profit!!! }
That's tidy, and is sorta on the lines of my own initial thoughts.
But afa
Problem:
You want to use delegation rather than inheritance to
add some capabilities of one class or object to
another class or object.
Solution:
Use a PROXY block:
class MyClass {
PROXY {
attr $left_front_wheel is Wheel;
attr $right_front_wheel is Wheel;
