Module Pattern
==============
```Example from 1 languages: Java
// Package = directory. Java classes can be grouped together in packages. A package name is the same as the directory (folder) name which contains the .java files. You declare packages when you define your Java program, and you name the packages you want to use from other libraries in an import statement.
// The first statement, other than comments, in a Java source file, must be the package declaration.
// Following the optional package declaration, you can have import statements, which allow you to specify classes from other packages that can be referenced without qualifying them with their package.
// This source file must be Drawing.java in the illustration directory.
package illustration;
import java.awt.*;
public class Drawing {
// ...
}
```
```Example from 1 languages: C#
// In C#, namespaces are the semi-equivalent of Java's packages.
namespace com.test
{
class Test {}
}
```
```Example from 1 languages: Julia
module MyModule
using Lib
using BigLib: thing1, thing2
import Base.show
export MyType, foo
struct MyType
x
end
bar(x) = 2x
foo(a::MyType) = bar(a.x) + 1
show(io::IO, a::MyType) = print(io, "MyType $(a.x)")
end
```
```Example from 1 languages: Racket
(module nest racket
(provide (for-syntax meta-eggs)
(for-meta 1 meta-chicks)
num-eggs)
(define-for-syntax meta-eggs 2)
(define-for-syntax meta-chicks 3)
(define num-eggs 2))
```
```Example from 1 languages: Fortran
module constants
implicit none
real, parameter :: pi = 3.1415926536
real, parameter :: e = 2.7182818285
contains
subroutine show_consts()
print*, "Pi = ", pi
print*, "e = ", e
end subroutine show_consts
end module constants
program module_example
use constants
implicit none
real :: x, ePowerx, area, radius
x = 2.0
radius = 7.0
ePowerx = e ** x
area = pi * radius**2
call show_consts()
print*, "e raised to the power of 2.0 = ", ePowerx
print*, "Area of a circle with radius 7.0 = ", area
end program module_exampl
```
```Example from 1 languages: Chapel
module
```
```Example from 1 languages: OCaml
(* In OCaml, every piece of code is wrapped into a module. *)
(* amodule.ml *)
let hello () = print_endline "Hello"
(* bmodule.ml *)
Amodule.hello ()
```
```Example from 1 languages: Gleam
// Gleam’s file is a module and named by the file name (and its directory path). Since there is no special syntax to create a module, there can be only one module in a file.
// in file main.gleam
import wibble // if wibble was in a folder called `lib` the import would be `lib/wibble`
pub fn main() {
wibble.identity(1)
}
```
```Example from 1 languages: C3
module my_module::submodule;
...
```
```Example from 1 languages: Speedie
module App
function Path (|string|)
// return the app's path here
```
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Languages *with* Module Pattern include Java, C#, Julia, Racket, Fortran, Chapel, OCaml, Gleam, C3, progsbase, Aardvark, Speedie, Bio
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View all concepts with or missing a *hasModules* measurement
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Read more about Module Pattern on the web: 1.
https://en.wikipedia.org/wiki/Module_pattern 1.
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