draw(x,y,direction,length) and drawFromPointer(direction, length)
SnakeEx, 200 bytes
The right language for the job... sort of.
m:{v<>}{r<RF>2P}{r<R>2P}{h<RF>1P}{w<>}{l<RF>2P}{l<R>2P}{h<.>1}
w:{u<>P}{v<>}
v:{e<L>}{u<R>1}
u:.*{e<>}
e:.$
r:[^ ]+
h:([^ ] )+
l:({c<.>}[^ ])+{c<.>}
c:{b<B>}(. )+{x<>LP}{s<>}
b:.{s<>}
s:[^\!-\~]*$
x:.
SnakeEx is a language from the...
Consider a non-empty string of correctly balanced parentheses:
(()(()())()((())))(())
We can imagine that each pair of parentheses represents a ring in a collapsed telescopic construction. So let's extend the telescope:
( )( )
()( )()( ) ()
()() ( )
...The dangling else is a problem in computer programming in which an optional else clause in an if–then(–else) statement results in nested conditionals being ambiguous. Formally, the reference context-free grammar of the language is ambiguous, meaning there is more than one correct parse tree.
In many programming languages one may write conditionally executed code in two forms: the if-then form, and the if-then-else form – the else clause is optional:
if a then s
if b then s1 else s2
This gives rise to an ambiguity in interpretation when there are nested statements, specifically whenever an if...
