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Jan 25, 2025
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Mention new scopes for if and while #264

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5 changes: 5 additions & 0 deletions content/docs/specials.mdz
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Expand Up @@ -155,6 +155,9 @@ macro.
The condition is considered false only if it evaluates to @code`nil` or
@code`false` - all other values are considered @code`true`.

If when-true or when-false is evaluated, this is done in the context
of a newly introduced lexical scope.

@codeblock[janet]```
(if true 10) # evaluates to 10
(if false 10) # evaluates to nil
Expand Down Expand Up @@ -211,6 +214,8 @@ or @code`nil`. Therefore, it is expected that the body will contain some side
effects or the loop will go on forever. The @code`while` loop always evaluates
to @code`nil`.

Note that the @code`while` special form introduces a new lexical scope.

@codeblock[janet]```
(var i 0)
(while (< i 10)
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