Since you mention mnemonics, here are the mnemonics I use to remember the (symmetrical) differences between foldr and foldl https://arialdomartini.github.io/fo

Since you mention mnemonics, here are the mnemonics I use to remember the (symmetrical) differences between foldr and foldl https://arialdomartini.github.io/fold-mnemonics https://arialdomartini.github.io/fold-mnemonics