support paths in math.parser

[BLamy]

Currently, If I want to create an object I need to do something like this

const parser = math.parser();
parser.set('foo', { bar: 4} )
console.log(parser.eval('foo')); // { bar: 4 }

What i'm looking for is a little bit like.
http://ramdajs.com/docs/#assocPath

const parser = math.parser();
parser.set('foo.bar', 4)
console.log(parser.eval('foo')); // { bar: 4 }

[FSMaxB]

This is already supported by normal evaluation so it would be logical to also support ist via parser's .set.

[josdejong]

Sounds like a nice extension of the parser's functions set and get.

[BLamy]

I'll send a PR if you guys want.

Also how do you guys feel about taking in scope in the constructor.

Currently, I have a function which looks like this.

const parserWithScope = scope => {
  const parser = math.parser();
  toPairs(scope).forEach(([key, value]) => parser.set(key, value));
  return parser;
};

but I would prefer to just be able to do new math.parser(scope)

[FSMaxB]

You can open a new issue to discuss new math.parser(scope), looking at the code it should be quite straightforward to implement.