Interpolation

String interpolation in computer programming allows for the dynamic insertion of variables and expressions into strings, enhancing the readability, flexibility, and conciseness of code. It enables programmers to construct strings with embedded values directly within the code, eliminating the need for complex concatenation operations or cumbersome formatting functions. String interpolation promotes code maintainability by making it easier to update and modify string representations of data, as variables and expressions can be seamlessly integrated into the text. Additionally, it facilitates the generation of formatted output for user interfaces, logging, error messages, and data serialization, improving the overall user experience. By providing a more intuitive and straightforward way to compose strings with dynamic content, string interpolation enhances developer productivity and code quality, contributing to the development of efficient and expressive software applications.

Select Languages

Examples

C

char name[] = "Joe";
char car[] = "Mazda";
char result[50];

sprintf(result, "%s drives a %s", name, car);
printf(result);

C#

string name = "Joe";
string car = "Mazda";
string result =
  format("{} drives a {}", name, car);
Console.WriteLine(result);

C++

#include <iostream>

// require c++ 20 to use
#include <format>
using namespace std;

string name = "Joe";
string car = "Mazda";
string result =
  format("{} drives a {}", name, car);
cout << result << endl;

Go

import "fmt"

var name = "Joe"
var car = "Mazda"
var result =
  fmt.Sprintf("%s drives a %s", name, car)
fmt.Println(result)

Java

String name = "Joe";
String car = "Mazda";
String result = String.format(
  "%s drivers a %s", name, car
);
System.out.println(result);

JavaScript

const name = 'Joe';
const car = 'Mazda';
const result = `${name} drives a ${car}`;
console.log(result);

Kotlin

val name = "Joe";
val car = "Mazda";
val result = "${name} drives a ${car}"
println(result);

MatLab

name = "Joe";
car = "Mazda";
result = sprintf("%s drives a %s", name, car);
display(result);

PHP

$name = "Joe";
$car = "Mazda";
$result = "{$name} drives a {$car}";
echo $result;

Python

name = 'Joe'
car = 'Mazda'
result = f"{name} drives a {car}"
print(result)

R

name <- "Joe"
car <- "Mazda"
result <- sprintf("%s drvies a %s", name, car)
print(result)

Ruby

name = "Joe"
car = "Mazda"
result = "#{name} drives a #{car}"
print(result)

Rust

let name = "Joe";
let car = "Mazda";
let result = format!("{} drives a {}", name, car);
println!("{}", result);

Scala

val name = "Joe";
val car = "Mazda";
val result = s"$name drives a $car";
println(result);

Swift

let name = "Joe";
let car = "Mazda";
let result = "\(name) drives a \(car)";
print(result);

TypeScript

const name:string = 'Joe';
const car:string = 'Mazda';
console.log(`${name} drives a ${car}`)

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