Exclamation Mark (!)

! 𝕩: Assert

Throw an error if 𝕩 is not 1.

       ! 1
1

       ! 2
Error: Assertion error

       ! "hello"
Error: hello

𝕨 ! 𝕩: Dyad

Throw an error with message 𝕨 if 𝕩 is not 1.

       "hi" ! 1
1

       "two" ! 2
Error: two

       "hello error" ! "hello"
Error: hello error