next and continue are two control flow constructs in Rust, used to skip to the next iteration of a loop.
next is used within a loop and it skips to the next iteration of the loop and continues execution from there. For example:
let mut count = 0;
loop {
count += 1;
if count == 5 {
next; // Skip to the next iteration if the count is 5
}
println!("{}", count);
if count == 10 {
break;
}
}
In this example, the loop will iterate from 1 to 10, but when count equals 5, the loop will execute next; and skip to the next iteration, so that 5 will not be printed.
continue is similar to next, but it is used inside a loop to skip a specific iteration based on a conditional. For example:
for i in 1..=10 {
if i % 3 == 0 {
continue; // Skip the iteration if i is divisible by 3
}
println!("{}", i);
}
In this example, the loop will iterate from 1 to 10, but any iteration where i is divisible by 3 will be skipped using continue.
Both next and continue are helpful when you want to skip some values or processing in a loop based on certain conditions.