feat(iterators): update hint comments
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@ -6,7 +6,7 @@
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// This module helps you get familiar with the structure of using an iterator and
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// how to go through elements within an iterable collection.
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//
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// Execute `rustlings hint iterators1` for hints :D
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// Execute `rustlings hint iterators1` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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@ -1,7 +1,7 @@
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// iterators2.rs
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// In this exercise, you'll learn some of the unique advantages that iterators
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// can offer. Follow the steps to complete the exercise.
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// As always, there are hints if you execute `rustlings hint iterators2`!
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// Execute `rustlings hint iterators2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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@ -4,7 +4,7 @@
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// 1. Complete the divide function to get the first four tests to pass.
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// 2. Get the remaining tests to pass by completing the result_with_list and
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// list_of_results functions.
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// Execute `rustlings hint iterators3` to get some hints!
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// Execute `rustlings hint iterators3` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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@ -1,4 +1,5 @@
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// iterators4.rs
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// Execute `rustlings hint iterators4` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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@ -6,7 +6,7 @@
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// imperative style for loops. Recreate this counting functionality using
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// iterators. Only the two iterator methods (count_iterator and
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// count_collection_iterator) need to be modified.
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// Execute `rustlings hint iterators5` for hints.
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// Execute `rustlings hint iterators5` or use the `hint` watch subcommand for a hint.
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//
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// Make the code compile and the tests pass.
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@ -34,6 +34,7 @@ fn count_for(map: &HashMap<String, Progress>, value: Progress) -> usize {
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fn count_iterator(map: &HashMap<String, Progress>, value: Progress) -> usize {
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// map is a hashmap with String keys and Progress values.
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// map = { "variables1": Complete, "from_str": None, ... }
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todo!();
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}
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fn count_collection_for(collection: &[HashMap<String, Progress>], value: Progress) -> usize {
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@ -52,6 +53,7 @@ fn count_collection_iterator(collection: &[HashMap<String, Progress>], value: Pr
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// collection is a slice of hashmaps.
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// collection = [{ "variables1": Complete, "from_str": None, ... },
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// { "variables2": Complete, ... }, ... ]
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todo!();
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}
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#[cfg(test)]
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@ -802,7 +802,8 @@ case is a vector of integers and the failure case is a DivisionError.
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The list_of_results function needs to return a vector of results.
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See https://doc.rust-lang.org/std/iter/trait.Iterator.html#method.collect for how
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the `FromIterator` trait is used in `collect()`."""
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the `FromIterator` trait is used in `collect()`. This trait is REALLY powerful! It
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can make the solution to this exercise infinitely easier."""
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[[exercises]]
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name = "iterators4"
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@ -812,7 +813,9 @@ hint = """
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In an imperative language, you might write a for loop that updates
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a mutable variable. Or, you might write code utilizing recursion
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and a match clause. In Rust you can take another functional
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approach, computing the factorial elegantly with ranges and iterators."""
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approach, computing the factorial elegantly with ranges and iterators.
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Hint 2: Check out the `fold` and `rfold` methods!"""
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[[exercises]]
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name = "iterators5"
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