Re: if-scoped let

[Brendan Eich]

Olov did write "because val leaks to the outer scope". That's a reason 
for the convenience of

if (let x = ...) { /* x in scope here */ }
(or const), vs.

{ let x = ...; if (x) { /* ... */ } }

Braces count, this is winning in C++.

/be
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