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Think about Loose Coupling

Re^3: Functional shuffle

by tall_man (Parson)
on Apr 02, 2005 at 16:19 UTC ( #444385=note: print w/ replies, xml ) Need Help??

in reply to Re^2: Functional shuffle
in thread Functional shuffle

Indeed a "functional shuffle" is a contradiction in terms. In functional programming, if you give a function the same inputs you must get the same outputs. Rand is resetting a seed somewhere, which is a disallowed side-effect in a pure functional program. However, one could define a shuffle that took a list of random numbers from some outside source as an input. The paper referenced by the OP does this.
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