Do

When used as a statement, do works just like it does in Lua.

do
  var = "hello"
  print var
print var -- nil here

Compile

YueScript’s do can also be used an expression. Allowing you to combine multiple lines into one. The result of the do expression is the last statement in its body.

counter = do
  i = 0
  ->
    i += 1
    i

print counter!
print counter!

Compile

tbl = {
  key: do
    print "assigning key!"
    1234
}

Compile

do expressions also support using break to interrupt control flow and return multiple values early:

status, value = do
  n = 12
  if n > 10
    break "large", n
  break "small", n

Compile