class Point {
var x = 0;
var y = 0;
distance(other) {
return Math.sqrt(x * other.x + y * other.y);
}
}
it is very tempting to think that var x and var y are in scope.
Would the following analogy with modules help?
Think of 'this' as
- the export object of the constructor method
- an import object of all methods.
Then one might want nice syntax for moving between local
bindings and import/export objects, without risks to lexical
scoping. Which is the same problem modules have, isn't it?
Could one use punning ({x} standing for {x=x}), destructuring,
and returning 'this'?
distance(other) {
let {x,y} = this; // import
return Math.sqrt(x * other.x + y * other.y);
}
constructor(x,y) {
return {x,y}; // export
}
To enable further code between 'this' initialization and constructor
return, might one permit assignment to 'this'?
constructor(x,y) {
this = {x,y}; // partial export
// more setup code
} // defaults to returning 'this'
Not taking sides, just wanted to mention the analogy..
Claus
http://clausreinke.github.com/
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