Pointers - language feature

Example from 1 languages: C

int *ptr;

Example from 1 languages: Go

package main

import "fmt"

func main() {
  i, j := 42, 2701

  p := &i         // point to i
  fmt.Println(*p) // read i through the pointer
  *p = 21         // set i through the pointer
  fmt.Println(i)  // see the new value of i

  p = &j         // point to j
  *p = *p / 37   // divide j through the pointer
  fmt.Println(j) // see the new value of j
}

Example from 1 languages: C#

// Pointers supported only under certain conditions.
// Get 16 bytes of memory from the process's unmanaged memory
IntPtr pointer = System.Runtime.InteropServices.Marshal.AllocHGlobal(16);

Example from 1 languages: Wa-lang

func main {
  i, j := 42, 2701

  p := &i         // point to i
  println(*p) // read i through the pointer
  *p = 21         // set i through the pointer
  println(i)  // see the new value of i

  p = &j         // point to j
  *p = *p / 37   // divide j through the pointer
  println(j) // see the new value of j
}

Example from 1 languages: Felix

var x = 1;
&x <- 2;

Example from 1 languages: Jule

let ptr: *int = nil

Example from 1 languages: Speedie

|| i = 0
|| p = &i
*p = 1
if (i == 1)
 "success"

Example from 1 languages: Fortran 90

type real_list_t
  real :: sample_data(100)
  type (real_list_t), pointer :: next => null ()
end type

type (real_list_t), target :: my_real_list
type (real_list_t), pointer :: real_list_temp

real_list_temp => my_real_list
do
  read (1,iostat=ioerr) real_list_temp%sample_data
  if (ioerr /= 0) exit
  allocate (real_list_temp%next)
  real_list_temp => real_list_temp%next
end do

Languages with Pointers include C, Go, C#, Objective-C, COBOL, Ada, D, C3, Eiffel, Wa-lang, PL/I, Modula-2, Oberon, Felix, Dale, BlitzMax, Jule, FreeBASIC, Aardvark, Speedie, Fortran 90

Languages without Pointers include JavaScript, Python, Java, Elixir, progsbase

View all concepts with or missing a hasPointers measurement