[vector] #93: scanl1 etc. fail on empty vector

vector vector at projects.haskell.org
Tue Apr 30 01:58:46 BST 2013


#93: scanl1 etc. fail on empty vector
-------------------+--------------------------------------------------------
Reporter:  akio    |       Owner:     
    Type:  defect  |      Status:  new
Priority:  minor   |   Milestone:     
 Version:          |    Keywords:     
-------------------+--------------------------------------------------------
 The following program throws an exception:

 {{{
 import Data.Vector as V

 main = print $ V.scanl1 (&&) V.empty
 }}}

 But I think it should print "fromList []". scanl1 from Data.List behaves
 this way, for example.

 {{{
 Prelude Data.List> scanl1 (&&) []
 []
 }}}

-- 
Ticket URL: <http://trac.haskell.org/vector/ticket/93>
vector <http://trac.haskell.org/vector>
Package vector


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