d2fn

Excellent points! Thank you.

No dimensionality limits but I wouldn't use this for truly high-dimensional problems like text analysis and inverted indexes (1000s of dimensions). It might work but I wasn't really thinking about those kinds of use cases when building this.

"For it to end up with the right value at the end (M x N), two things need to be true." <-- the two things (immediate visibility and atomicity) are not strictly required. this is only required if all intermediate values are to be observed by the running threads. otherwise you can end up with the correct answer (M x N) without requiring threads to coordinate each write.

some observations: 1. when content changes every hyperlink to that content must change along with it. 2. pass by reference (url) is no longer possible.

facebook isn't free, you're the product

You get to be a good developer by repeatedly building software that solves problems and creates utility. Heed the advice of others who suggest learning different classes of languages that affect the way you think about problem solving. But pick something and don't toil over it too long.

The other part of the "doing" side of things is finding something to do. A good place to start is by solving a problem you have yourself or that you are interested in. Maybe you think all the todo list managers suck, or maybe you want a tool that helps to organize your porn collection. Great, pick a language and get to work.

Another secret is to hang out with smart people and other good programmers. Talk to others about their work and learn from them. The rising tide raises all ships.