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Add note about hygienic macros #472

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merged 3 commits into from Mar 3, 2023
Merged

Add note about hygienic macros #472

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2b118f7
Add note about hygienic macros
qwandor Mar 2, 2023
56e33c5
Fix typo.
qwandor Mar 2, 2023
d78f5fe
Add link about macro hygiene.
qwandor Mar 3, 2023
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3 changes: 3 additions & 0 deletions src/hello-world.md
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Expand Up @@ -33,4 +33,7 @@ Key points:
* Rust uses macros for situations where you want to have a variable number of
arguments (no function [overloading](basic-syntax/functions-interlude.md)).

* Macros being 'hygienic' means they don't accidentally capture identifiers from
the scope they are used in. Rust macros are actually only partially hygenic.

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