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Structure

Conditionals

Perform an action if a condition is true (IF .. THEN)

Given a variable name, if the value is "Bob", display the string "Hello, Bob!". Perform no action if the name is not equal.

clojure

(def person "Bob")
(if (= person "Bob")
(println "Hello, Bob!"))

cpp C++/CLI .NET 2.0

if (name == "Bob") Console::WriteLine("Hello, {0}!", name);

cpp

if (name == "Bob") std::cout << "Hello, " << name << "!" << std::endl;

csharp

if (name == "Bob") Console.WriteLine("Hello, {0}!", name);

erlang

if (Name == "Bob") -> io:format("Hello, ~s!~n", [Name]) ; true -> false end.

erlang

case Name of "Bob" -> io:format("Hello, ~s!~n", [Name]) ; _ -> false end.

erlang

Name == "Bob" andalso (begin io:format("Hello, ~s!~n", [Name]), true end).

fantom

if (name=="Bob") echo("Hello, Bob!")

fsharp

if name = "Bob" then printfn "Hello, %s!" name

fsharp

name = "Bob" && begin printfn "Hello, %s!" name ; true end

groovy

if (name=='Bob')
println "Hello, Bob!"

haskell

name = "Bob"
main = if name == "Bob" then putStrLn "Hello, Bob!" else return ()

java

if (name.equals("Bob")) {
System.out.println("Hello, Bob!");
}

ocaml

if name = "Bob"
then print_string "Hello, Bob!"

perl

if ($name eq "Bob") {
print "Hello, Bob!"
}

perl

print "Hello, Bob!" if $name eq "Bob";

php

if($name == "Bob") {
echo "Hello, Bob!";
}

python

if name == 'Bob':
print 'Hello, Bob!'

ruby

if (name=='Bob')
puts "Hello, Bob!"
end

ruby

puts "Hello, Bob!" if name=='Bob'

scala

val name = "Bob"
if (name.equals("Bob")) printf("Hello, %s!\n", name)

scala

val name = "Bob"

// Scala supports operator overloading, so the following works correctly
if (name == "Bob") printf("Hello, %s!\n", name)

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