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feat: Refactor hint system

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Hints are now accessible using the CLI subcommand `rustlings hint
<exercise name`.

BREAKING CHANGE: This fundamentally changes the way people interact with exercises.
This commit is contained in:
marisa
2019-11-11 16:51:38 +01:00
parent 627cdc07d0
commit 9bdb0a12e4
47 changed files with 400 additions and 1681 deletions
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64
exercises/macros/macros3.rs
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@@ -1,5 +1,6 @@
// macros3.rs
// Make me compile, without taking the macro out of the module! Scroll down for hints :)
// Make me compile, without taking the macro out of the module!
// Execute `rustlings hint macros3` for hints :)
mod macros {
macro_rules! my_macro {
@@ -12,64 +13,3 @@ mod macros {
fn main() {
my_macro!();
}
// In order to use a macro outside of its module, you need to do something
// special to the module to lift the macro out into its parent.
// The same trick also works on "extern crate" statements for crates that have
// exported macros, if you've seen any of those around.