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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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54
exercises/macros/macros1.rs
View File

@@ -1,5 +1,5 @@
// macros1.rs
// Make me compile! Scroll down for hints :)
// Make me compile! Execute `rustlings hint macros1` for hints :)
macro_rules! my_macro {
() => {
@@ -10,55 +10,3 @@ macro_rules! my_macro {
fn main() {
my_macro();
}
// When you call a macro, you need to add something special compared to a
// regular function call. If you're stuck, take a look at what's inside
// `my_macro`.

63
exercises/macros/macros2.rs
View File

@@ -1,5 +1,5 @@
// macros2.rs
// Make me compile! Scroll down for hints :)
// Make me compile! Execute `rustlings hint macros2` for hints :)
fn main() {
my_macro!();
@@ -10,64 +10,3 @@ macro_rules! my_macro {
println!("Check out my macro!");
};
}
// Macros don't quite play by the same rules as the rest of Rust, in terms of
// what's available where.
// Unlike other things in Rust, the order of "where you define a macro" versus
// "where you use it" actually matters.

64
exercises/macros/macros3.rs
View File

@@ -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.

63
exercises/macros/macros4.rs
View File

@@ -1,5 +1,5 @@
// macros4.rs
// Make me compile! Scroll down for hints :)
// Make me compile! Execute `rustlings hint macros4` for hints :)
macro_rules! my_macro {
() => {
@@ -14,64 +14,3 @@ fn main() {
my_macro!();
my_macro!(7777);
}
// You only need to add a single character to make this compile.
// The way macros are written, it wants to see something between each
// "macro arm", so it can separate them.