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In haskell, negative numbers come from using the unary operator '-' in front of a number, but the subtraction function also use '-'. So when you type :t (-) in ghci, you only get the result of the subtraction function's type like
:t (-)
(-) :: Num a => a -> a -> a
But is it possible to get the type of the "negate operator" in ghci? I know this is trivial, but I am curious.
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The unary address-of operator (&) takes the address of its operand. The operand of the address-of operator can be either a function designator or an l-value that designates an object that is not a bit field and is not declared with the register storage-class specifier.
A unary operator, in C#, is an operator that takes a single operand in an expression or a statement. The unary operators in C# are +, -,!, ~, ++, -- and the cast operator.
The Unary decrement operator is of two types: the Pre decrement operator and the Post Decrement operator.
In Haskell there is only one unary operator, namely the unary minus. It has been discussed in length, whether the unary minus shall be part of numeric literals or whether it shall be an independent operator.
Java unary operators are the types that need only one operand to perform any operation like increment, decrement, negation, etc. It consists of various arithmetic, logical and other operators that operate on a single operand.
It can be written in prefix notation like in or in postfix notation ( factorial ). In Haskell there is only one unary operator, namely the unary minus . It has been discussed in length, whether the unary minus shall be part of numeric literals or whether it shall be an independent operator.
The unary plus operator is represented as the "+" symbol, and it does not change to the operand value. It is the unary increment operator, which is denoted by the "++" symbol. The "++" symbol represents the operand's value is increased by 1. It can be used in two ways, as the post-increment and the pre-increment.
You could eta expand it:
Prelude> :t \x -> -x
\x -> -x :: Num a => a -> a
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