Some examples in "debraced" mode, indentation completely missing, add
parentheses/braces at will, DYI, it will get parsed anyway. functions at the
"zero-level" (no embracing parantheses) need to be defined at the beginning of
a line...
import stdio.h
faculty proc(int n) int = return n * faculty(n-1)
fn(0) = 1
main proc(int argc,char argv*[]) = for a in argv[0..<argc] : printf "%s\n",a
printf "%d\n", faculty(3)
# output: the command line items, then prints "6".
# pointwise definition of faculty at value "0" , proc name "borrowed" from
actual definition
# now an old-style definition of main, however no semicolon required
main proc(int argc,char argv*[]) { int a;
for (a=0; a<argc; a += 1) printf ("%s\n",argv[a]);
printf ("%d\n", faculty(3))
}
# compiler would eventually give a warning because of the missing ":" after
for
# However, since the compiler basically presumes line-orientation, the
semicola could be removed.
# and now, a proc as a lambda, not supported by C. The ":=" helps with
type inference.
x := (proc(...)int = ...... )
# we get a x() and might even get a closure. This is not c-idiomatic
anymore, of course.
# Anyway, we can expect automatic dereferencing , so we can use x(....) .
# ... as already provided within C as standard behaviour. Now, let's
rewrite faculty:
faculty proc(n) = return n * faculty(n-1)
fn 0 = 1
# compiler should be able to type it for us, why not......
Run
nim
