Re: a new language, designed for safety !

["Dan'l Miller" <optikos@verizon.net>]

On Tuesday, June 3, 2014 8:19:03 PM UTC-5, Dan'l Miller wrote:
> On Tuesday, June 3, 2014 7:21:45 PM UTC-5, Luke A. Guest wrote:
> 
> > Quel surprise, it's YAC (yet another C)

This YAC is not your father's Oldsmobile.  As another example, Swift (along with Seed7, Fortress, and a few other languages lately) allow declaration of prefix, infix, & postfix operators that do not appear in the standardized language:

"Custom Operators
You can declare and implement your own custom operators in addition to the standard operators provided by Swift. Custom operators can be defined only with the characters / = - + * % < > ! & | ^ . ~.

New operators are declared at a global level using the operator keyword, and can be declared as prefix, infix or postfix:

operator prefix +++ {}
The example above defines a new prefix operator called +++. This operator does not have an existing meaning in Swift, and so it is given its own custom meaning below in the specific context of working with Vector2D instances. For the purposes of this example, +++ is treated as a new "prefix doubling incrementer" operator. It doubles the x and y values of a Vector2D instance, by adding the vector to itself with the addition assignment operator defined earlier:

@prefix @assignment func +++ (inout vector: Vector2D) -> Vector2D {
    vector += vector
    return vector
}
This implementation of +++ is very similar to the implementation of ++ for Vector2D, except that this operator function adds the vector to itself, rather than adding Vector2D(1.0, 1.0):

var toBeDoubled = Vector2D(x: 1.0, y: 4.0)
let afterDoubling = +++toBeDoubled
// toBeDoubled now has values of (2.0, 8.0)
// afterDoubling also has values of (2.0, 8.0)

Precedence and Associativity for Custom Infix Operators[...]"

Excerpt From: Apple Inc. "The Swift Programming Language." iBooks. https://itun.es/us/jEUH0.l