mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

extra comment about macros

Browse Source 
Fixes #17190
This commit is contained in:
Steve Klabnik 2014-10-02 15:12:27 -04:00
parent 49fcb27df6
commit 85a8b92b51
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/doc/guide.md
View File

@ -195,9 +195,11 @@ The second point is the `println!()` part. This is calling a Rust **macro**,
which is how metaprogramming is done in Rust. If it were a function instead, it
would look like this: `println()`. For our purposes, we don't need to worry
about this difference. Just know that sometimes, you'll see a `!`, and that
means that you're calling a macro instead of a normal function. One last thing
to mention: Rust's macros are significantly different than C macros, if you've
used those. Don't be scared of using macros. We'll get to the details
means that you're calling a macro instead of a normal function. Rust implements
`println!` as a macro rather than a function for good reasons, but that's a
very advanced topic. You'll learn more when we talk about macros later. One
last thing to mention: Rust's macros are significantly different than C macros,
if you've used those. Don't be scared of using macros. We'll get to the details
eventually, you'll just have to trust us for now.
Next, `"Hello, world!"` is a **string**. Strings are a surprisingly complicated