Loops

Rust has essentially three types of loops:

• loop is the simplest one—it just goes through a block of code again and again until one of the loop-breaking keywords is used
• while is like loop, but with a condition—the block of code is looped again and again as long as the condition is true
• for is different from the above two—it is for iterating through sequences

The for loop

The for loops are slightly different from the same construct in C-like languages. In C, the for loops consist of three things: an initialization, a stopping condition, and a stepping instruction. Rust for loops are a bit higher-level though: they are for iterating through sequences.

Let's take a simple example to start with...