Closures are awesome

var add = { (arg1: Int, arg2: Int) -> Int in
    return arg1 + arg2
}

add = { (arg1, arg2) -> Int in
    return arg1 + arg2
}

add = { arg1, arg2 in
    arg1 + arg2
}

add = {
    $0 + $1
}

Swift

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Closures are awesome

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