for / of keywords

Bnlang has exactly one form of for loop: for (var <name> of <list>) { ... }. It binds <name> to each element of <list> in order. The English form is for ... of; the Bangla form is প্রতি ... এর.

There is no C-style for (init; test; update) loop. For counter-driven loops, use while.

Syntax

for (var <name> of <list>) {
    // body
}

Examples

for (var n of [1, 2, 3, 4, 5]) {
    print(n);
}

Bangla form:

প্রতি (চলক n এর [1, 2, 3, 4, 5]) {
    print(n);
}

Iterating with an index

If you need the index too, pair for ... of with a counter:

var items = ["a", "b", "c"];
var i = 0;
for (var item of items) {
    print(i, item);
    i = i + 1;
}

What's not here

• No C-style for. for (var i = 0; i < n; i++) is not valid syntax — use while.
• No for ... in. To iterate map keys, use for (var k of m.keys()) { ... }.

Early exit and skip

Use break to exit the loop and continue to skip to the next item:

for (var n of [1, 2, 3, 4, 5]) {
    if (n == 4) { break; }
    if (n == 2) { continue; }
    print(n);
}
// 1
// 3

See also

• while — for counter-driven or condition-driven loops.