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PRMA

I think the author has too high of a standard for readability, here.

calcChange owed given = if given - owed > 0 then given - owed else 0 Two things are wrong with this function: Even for a tiny function, it’s hard to read.
Jul 28, 2023, 05:01 PM·Public
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PRMA

I understand the sentiment behind these examples. Regardless they are funny, expectation-wise.

You’re messing around in GHCi and want to quickly calculate the difference between the square of the sum of three values and the sum of the squares of three values: 4, 10, 22. You could write this out by hand: GHCi> (4 + 10 + 22)^2 - (4^2 + 10^2 + 22^2) But this makes it easy to have a typo that causes your expression to create an error. Additionally, it’s difficult to change these values if you want to edit this item from your GHCi command history (press the up arrow in GHCi to get the previous item). Is there a way to make this a bit cleaner without having to explicitly define a function?
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James Lees

@Amirography but now I want to know the 2nd thing that's wrong...

GIF
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PRMA

@JAGLees its the duplication of code of "given - owed" :D.

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