Well, there's a lot of precedent I'm languages for it (the while condition) to not be a part of the block scope. So from that prospective it's unsurprising, though it may surprise developers accustomed to variable hosting
> On Apr 17, 2015, at 11:18 AM, Glen Huang <[email protected]> wrote: > > Not sure about others, but i assume the condition part and statement part in > a control construct live in the same scope. > > That's why you can do `for (let a = 1; a < 2; a++) a;`. And `if (let a = 1) > a;` maybe in es7? > > Why that's not the case for "do while"? Is my mental model wrong? > >> On Apr 17, 2015, at 11:10 PM, Caitlin Potter <[email protected]> wrote: >> >> Is there a language where lexically scoped variables declared in a block are >> accessible outside of that block? Java, C, C#, rust, Python, etc, will not >> let you do this. I’m not sure this is a gotcha for most software developers >> >>> On Apr 17, 2015, at 10:57 AM, Glen Huang <[email protected]> wrote: >>> >>> ```js >>> do { >>> let a = 1; >>> } while (a); >>> ``` >>> is "a" undefined in the while condition? This seems like a gotcha. >>> >>> >>> _______________________________________________ >>> es-discuss mailing list >>> [email protected] >>> https://mail.mozilla.org/listinfo/es-discuss > _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
