Comment by AlienRobot

One difference that Zig has is that it doesn't have multiline comments or multiline strings, meaning that the parser can parse any line correctly without context. I assume this makes parallelization trivial.

There is ino operator overloading like C, so A + B can only mean one thing.

You can't redeclare a variable, so foo can only map to one thing.

The list goes on.

Basically it was designed to compile faster, and that means many issues on Github have been getting rejected in order to keep it that way. It's full of compromises.