Multi-Function Programs

ilo programs can contain multiple functions. Each function is a named declaration separated by a newline (in files) or a space (inline):

Save this as math.ilo:

ilo

dbl x:n>n;*x 2
inc x:n>n;+x 1
sq x:n>n;*x x

Selecting a function from the CLI

When a program has multiple functions, name the one you want to run after the filename:

Shell

ilo math.ilo dbl 5
# → 10

ilo math.ilo sq 5
# → 25

If you omit the function name, ilo runs the first one:

Shell

ilo math.ilo 5
# → 10  (runs dbl, the first function)

Inline programs work the same way:

Shell

ilo 'dbl x:n>n;*x 2 sq x:n>n;*x x' dbl 5
# → 10

ilo 'dbl x:n>n;*x 2 sq x:n>n;*x x' sq 5
# → 25

Functions can call each other

Functions in the same program can reference each other:

Inline:

ilo

dbl x:n>n;*x 2
quad x:n>n;dbl(dbl x)

Or as a file:

ilo

dbl x:n > n        -- double a number
  *x 2             -- multiply x by 2

quad x:n > n       -- quadruple a number
  dbl(dbl x)       -- double x, then double again

Shell

ilo 'dbl x:n>n;*x 2 quad x:n>n;dbl(dbl x)' quad 3
# → 12

For splitting functions across files, see Imports.