A language with go style coroutines and channels.
deno run --allow-read main.ts path/to/the/program
let print_numbers = fun(start, end) {
let i = start;
while i < end + 1 {
print i;
yield;
i = i + 1;
}
};
spawn print_numbers(1, 4);
print_numbers(11, 16);
To see other examples, go to the /examples folder.
let a = 42;
let numbers = 42;
let strings = "hello";
let booleans = true;
let objects = {
x: 2,
y: 3
};
if x < y {
print "x is smaller";
} else {
print "y is smaller or equal";
}
while true {
yield;
}
There are two ways of defining a function, one is globally visible and a statement:
function fib(n) {
if n < 2 {
return n;
} else {
return fib(n - 1) + fib(n - 2);
}
}
Another is an expression and anonymous:
let lambda = |x| {
print x;
}
By increasing precedence:
- Boolean: <, >, <=, >=
- Numeric: +, -
- Member access: . (e.g
object.x)
A coroutine is started via spawn keywords. It works just like goroutines.
let print_numbers = |start, end| {
let i = start;
while i < end + 1 {
print i;
yield;
i = i + 1;
}
};
spawn print_numbers(1, 4);
print_numbers(11, 16);
The syntax is just like Go's.
let sender = |message_channel| {
message_channel <- 42;
};
let message_channel = Channel(0);
spawn sender(message_channel);
let message = <-message_channel;
print message;
We only support reading and writing to the stdio.
let input = prompt("Enter a message: ")
print input;
- Implementing Co: I highly recommend this blog post. It's an excellent read. I used it to understand the concepts more and the example at
/examples/coroutines.vsis taken from this blog post.