úÎ Æ   ZCompute a right biased fold. the estimator function is a guess at the value of the suffix YCompute a left biased fold. the estimator function is a guess at the value of the prefix  6Inspect the dynamic pointer tagging bits of a closure \Returns a guess as to whether or not a value has been evaluated. This is an impure function c that relies on GHC internals and will return false negatives, but (hopefully) no false positives. _Evaluate a function using a cheap guess at the argument in parallel with forcing the argument. GThis is one way to induce parallelism in an otherwise sequential task. Y If the argument has already been evaluated, we avoid sparking the parallel computation.           speculation-0.0.0Control.Concurrent.Speculation Speculative specFoldr1 specFoldrN specFoldl1 specFoldlN evaluatedspec specFoldr specFoldlBoxtagerrorEmptyStructure