$
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constrains associativity. It kind of says "execute everything on the right first." E.g.:
sum $ filter even [1..100] is equivalent to
sum (filter even [1..100]) .
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<$>
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is the same as liftA{n}
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<*>
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is the same as ApplicativeDo
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^.
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is the same as view
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^..
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is the same as toListOf
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%~
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is the same as over
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.~
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is the same as set
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