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How to write a multiline comment in Haskell
Gutha Vamsi KrishnaOverview
Comments are non-executable statements that are used to describe the program. They are useful while reviewing another's code because they help us to understand the logic behind the code.
Each language uses a different syntax to add the comments the source code. We will use the syntax below to add the comment in Haskell.
Syntax
Let’s have a look at the syntax for the single line and multiline comment.
Single line comment
-- Use two hyphens to comment a single line of code.
Multiline comment
{-
This is the syntax of multiline comments in haskell
-}Multiline comments start with a flower bracket and a hyphen, {-, and close with a hyphen and a flower bracket -}. We'll add comments to the lines between.
Let us take a look at an example below.
Example
main :: IO()
main = do
{-
print("This line won't print")
print("This line is commented using multiline comment syntax"
-}
print("Hello World")Explanation
- Lines 4–7: We add comments to these lines using multiline syntax so the compiler will ignore the statements present in it.
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