diff options
| -rw-r--r-- | examples/tutorial.nom | 27 | ||||
| -rw-r--r-- | utils.lua | 24 |
2 files changed, 45 insertions, 6 deletions
diff --git a/examples/tutorial.nom b/examples/tutorial.nom index 776f900..55e558b 100644 --- a/examples/tutorial.nom +++ b/examples/tutorial.nom @@ -52,12 +52,27 @@ if (1 > 10): ..else: say "this will print" -if (1 > 3): - say "this won't print" -..else: if (1 < 2): - say "this won't print" -..else: - say "this will print" +# For longer conditionals, a "when" branch is the best option +when: + ? 1 > 4: + say "this won't print" + ? 1 > 3: + say "this won't print" + ? 1 > 2: + say "this won't print" + ?: + say "this will print" + +# When "when" is given an argument, it works like a switch statement +when 3: + == 1: + say "this won't print" + == 2: + say "this won't print" + == 3: + say "this will print" + ==: + say "this won't print" # Loops look like this: for %x in [1,2,3]: @@ -91,6 +91,8 @@ utils = { start, stop, step = 1, start, 1 elseif step == nil then step = 1 + elseif step == 0 then + error("Range step cannot be zero.") end return setmetatable({ start = start, @@ -105,9 +107,31 @@ utils = { end end return iter, self, 0 + end, + __index = function(self, i) + if type(i) ~= "Number" then + return nil + end + if i % 1 ~= 0 then + return nil + end + if i <= 0 or i - 1 > (self.stop - self.start) / self.step then + return nil + end + return self.start + (i - 1) * self.step + end, + __len = function(self) + local len = (self.stop - self.start) / self.step + if len < 0 then + len = 0 + end + return len end }) end, + nth_to_last = function(list, n) + return list[#list - n + 1] + end, keys = function(t) local _accum_0 = { } local _len_0 = 1 |