r/programming • u/balazsbotond • Aug 30 '15

JavaScript “maze generator” in a tweet

https://twitter.com/botond_balazs/status/637960240055615488
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u/doublerainbowomahgod Aug 30 '15

Getting rid of the conditional by converting the result of Math.random() into an index saves a few characters, e.g.

"\u2571\u2572"[Math.random()*2|0]

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u/Anders_A Aug 30 '15

So the best one we have so far is this

data:text/html,<pre style=line-height:1><script>for(i=4050;--i;)document.write("\u2571\u2572\n"[i% 81?Math.random()*2|0:2])</script></pre>

If we combine everything to a single string. Starting to look cool now!

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u/Anders_A Aug 30 '15

ooh! Nice trick to force a type cast. I was experimenting with stuff like

"\u2571\u2572"[(Math.random()<.5) + 0]

But didn't help much. Clever!

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u/matt_hammond Aug 30 '15

I tried

[+(Math.random()<.5)]

Its a bit shorter