SecondPart_SyntaxInFunctions

SecondPart_SyntaxInFunctions

1. Pattern matching

   • Allows all types of data but errors occur when the pattern receives an unexpected value
   • Head Tail Pattern (x:xs) where x is the head and xs is the tail

2. As Patterns

   • they are useful to decompose something by referring to something as a whole all@ (x:_)

3. Guards

   • it's like a Boolean expression, when it evaluates True it returns the body of the function and when it evaluates False, it passes to the next guard
     • Is similar to the If else ... if else or case in Java
     • otherwise, it is the real case if you do not find one previously in the guard

4. where

   • A equation is linked to a variable so that it does not have to be repeated in a program at the end of the function

5. Let it be

   • is similar to Where, the difference is that the Let can link in anywhere and acts on itself

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