Control flow

Rust's if and loops look familiar, but they are expressions more often than TypeScript developers expect. This theme covers if, else if, loop, while, for, ranges, break, continue, and match only as a first glimpse. Planned exercises: 1. choose Rust if syntax without parentheses. 2. choose an if expression value. 3. recognise for n in 0..5. 4. fill a range. 5. fill break with a value from loop. 6. write a while condition. 7. write a for loop over a range. 8. translate TS branching code. 9. write a small counter that prints selected values.