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bor0/explicit-reduction-trees.js

Last active September 27, 2022 15:48
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explicit-reduction-trees.js
function computation() {
this.red_tree = [];
this.valid = true;
this.add = function (x, y) {
if (!this.valid) return;
var res;
if (typeof x != 'number' || typeof y != 'number') {
this.valid = false;
res = 'error';
} else {
res = x+y;
}
this.red_tree.push( {
'op': 'add',
'x': x,
'y': y,
'res': res,
} );
this.res = res;
}
return this;
}
var foo = computation();
console.log(foo.red_tree);
console.log(foo.res);
foo.add(3,4);
console.log(foo.red_tree);
console.log(foo.res);
foo.add(3,'a');
console.log(foo.red_tree);
console.log(foo.res);
/*
[]
undefined
[ { op: 'add', x: 3, y: 4, res: 7 } ]
7
[
{ op: 'add', x: 3, y: 4, res: 7 },
{ op: 'add', x: 3, y: 'a', res: 'error' }
]
error
*/
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