echo/examples/misc/queue.echo at main · csfh/echo · GitHub

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; FIFO queue. Run: xo run examples/misc/queue.echo
/ std/io
/ std/str
/ std/collections/queue

~ q = queue.make()
q.push(10)
q.push(20)
io.print(str.from_int(q.len()))
| q.pop() {
    $ v {
        io.print(str.from_int(v))
    }
    ! e {
        io.print(e)
    }
}
| q.pop() {
    $ v {
        io.print(str.from_int(v))
    }
    ! e {
        io.print(e)
    }
}