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Programming-Idioms

  • Rust
  • Scala
  • Python
  • Ruby

Idiom #127 Source code inclusion

Import the source code for the function foo body from a file "foobody.txt".

def foo
  eval File.read "foobody.txt"
end

File foobody.txt will be read and evaluated at runtime.
Using eval will make the final value of foobody.txt available to be returned by foo.
Using load or require will not.
fn main() {
    include!("foobody.txt");
}

"foobody.txt" must contain a single Rust expression. If you need several, enclose them in braces.
import imp
foo = imp.load_module('foobody', 'foobody.txt').foo

To remove all side-effects: del sys.modules['foobody']
void foo()
{
#include "foobody.txt"
}

Same as C++
New implementation...
< > ⌨
MLKo 
def foo
  eval File.read "foobody.txt"
end

fn main() {
    include!("foobody.txt");
}

foo = imp.load_module('foobody', 'foobody.txt').foo
void foo()
{
#include "foobody.txt"
}
(def foo (load-file "foobody.txt"))
void _foo() {
#include "foobody.txt"
}

void foo()
{
    mixin(import("foobody.txt"));
}
function foo()
include "foobody.txt"
end function foo
//go:embed foobody.txt
var s string


const foo = new Function(await readFile('foobody.txt'));
function foo(): void
{
    include 'foobody.txt';
}
procedure foo;
begin
  {$I foobody.txt}
end;
sub foo {
    do './foobody.txt';
}