language-cheatsheet

Learn multiple languages at the same time.

Features/Languages	Python	Go	Rust	Swift	Kotlin	Java	Dart
package management tools	pip,conda	go get, go mod	Cargo	Cocoapods, Swift Package Manager	Gradle, Maven	Gradle, Maven	pub
frameworks	Django, Flask, FastAPI	Gin, Echo, Beego		SwiftUI, Vapor	Ktor, Jetpack, Srping Boot	Spring Boot	Flutter
memory management	GC	GC	Ownership	ARC	GC	GC	GC
constant declaration	myConst = 10	const MY_CONST int = 10	const MY_CONST:i32 = 10;	let myConst = 10	val MyConst = 10	final int MY_CONST = 10;	const myConst = 10; or final myConst; myConst = 10;
comment	# comment line or '''comment block''' or """comment block"""	//comment line or /* comment block */		//comment line or /* comment block */ or /* out block /* inner block */ out block */	//comment line or /* comment block */	//comment line or /* comment block */
multiple statements in 1 line
import modules	import somemodule or from somemodule import function1, function2	import "somemodule"	use std::io::stdin;	import Cocoa	import somePackage.someModule.SomeClass or import somePackage.someModule.someFunction	import package1[.package2…].(classname/*);
variable declaration	myVar = 10	var myVar int; myVar = 10 or var myVar = 10 or myVar := 10	let mut myVar = 10	var myVar:Int or var myVar = 10	var myVar:Int or var myVar = 10	int myVar = 10;	var myVar = 10;
Optionals				var myVar:Int?	var myVar:Int?
print statement	print("Hello, ", myVar)	import "fmt" fmt.Println("Hello",myVar)		print("Hello, \(myVar) ")	println("Hello, $myVar")	System.out.println("Hello"+myVar);
primitive types		``	``		``	byte short int long float double boolean char String	``
types	int float complex bool String	byte rune int uint uintptr float32 float64 complex64 complex128 bool		Int UInt Float Double Bool String Character	Byte Short Int Long Float Double Boolean String Char	byte short int long float double boolean char String	``
type inference		√		√	√	-
collection types	List Tuple Set Dictionary
List	myList = [ 'abcd', 786 , 2.23 ]
Tuple	myTuple = ( 'abcd', 786 , 2.23 )
Dictionary/Map	myDict = { 'abc': 123, 98.6: 37 }
if statement	if condition_1:     statement_block_1 elif condition_2:     statement_block_2 else:     statement_block_3
function declaration	def sum(a, b):     return a + b	func sum(a, b int) int { return a + b }	fn sum(a: i32, b: i32) -> i32 { return a + b; }	func sum(a: Int, b: Int) -> Int { return a + b }	fun sum(a: Int, b: Int): Int { return a + b }	public class MyClass { public static int sum(int a, int b) { return a + b; }