Hi,

when you write 3 Haskell sees it as a "num" while the type of the length [1,2,3] is "int". So 3 and length [1,2,3] have not the same type.

Il ven 5 feb 2021, 19:23 Lawrence Bottorff <borgauf@gmail.com> ha scritto:

I can divide a float by an integer

>  2.4 / 3

0.7999999999999999

but why can I not do this?

< 2.4 / (length [1,2,3])

<interactive>:288:1-22: error:
    * No instance for (Fractional Int) arising from a use of `/'
    * In the expression: 2.4 / (length [1, 2, 3])

LB

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