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diff --git a/exercises/collections/README.md b/exercises/collections/README.md new file mode 100644 index 0000000..9ded29a --- /dev/null +++ b/exercises/collections/README.md @@ -0,0 +1,20 @@ +### Collections + +Rust’s standard library includes a number of very useful data +structures called collections. Most other data types represent one +specific value, but collections can contain multiple values. Unlike +the built-in array and tuple types, the data these collections point +to is stored on the heap, which means the amount of data does not need +to be known at compile time and can grow or shrink as the program +runs. + +This exercise will get you familiar with two fundamental data +structures that are used very often in Rust programs: + +* A *vector* allows you to store a variable number of values next to + each other. +* A *hash map* allows you to associate a value with a particular key. + You may also know this by the names *map* in C++, *dictionary* in + Python or an *associative array* in other languages. + +[Rust book chapter](https://doc.rust-lang.org/stable/book/ch08-01-vectors.html) |