John Lenz wrote:
How did "let x" in for-loops land:for (let x = 1; x < 10 ; i++) { // is "x" a fresh binding for every iteration? } This wouldn't be "block" scoping either.
It is -- special forms that have heads can bind in bodies. We see this with formal parameters to functions, also with the defunct let blocks and let expressions of ES4. ML has similar forms.
We made this block scoping, and how! Turns out Dart did the same. Each iteration gets a fresh binding. If there's a closure in the first part of the for(;;) head that captures the loop variable, it gets a "0th iteration" binding.
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