tomatenmhark: mers

see the repo on github or try to write some code (available if mers is listed as running on tomatenmhark.org)

hello, world!

"hello, world!".println

stdout: hello, world!

variables

my_variable := "hello, world!"
my_variable.println

stdout: hello, world!

adding two integers

a := 5
b := 10
a.add(b)

output: 15

a simple function

double := a -> a.add(a)
5.double

output: 10

causing a type error

a := "5"
b := 10
a.add(b)

error found:
╷Line 3 (1..8)
│ a.add(b)
│ ~~~~~~~~
│   ~~~
│Can't call this function with an argument of type (String, Int<10>):
└╴`add`: first argument must be `Int/Float`, but was `String`.

mixing types

some_condition := "a".eq("b")
if some_condition 5 else "not a number"

output type: Int<5>/String
output: not a number