PSVdif Sieve pattern for difference of integer generators with point output


Part of: miSCellaneous


Inherits from: Psieve


Pattern for difference of integer generators with point output. Corresponds to Sieve's method 'dif'.


See also: Sieves and Psieve patterns, Sieve, PSVunion, PSVunion_i, PSVunion_o, PSVunion_oi, PSVsect, PSVsect_i, PSVsect_o, PSVsect_oi, PSVsymdif, PSVsymdif_i, PSVsymdif_o, PSVsymdif_oi, PSVdif_i, PSVdif_o, PSVdif_oi, PSVop, PSVop_i, PSVop_o, PSVop_oi 



Creation / Class Methods


*new (genList, maxLength, limit)

Creates a new PSVdif object.

genList - An array of generators. 

Allowed generators: Integers, Streams or Patterns producing intervals or Sieves itself.

Integers and Stream/Pattern output must be strictly positive. 

Integers as generators produce zero and its positive multiples.


maxLength - Integer. Maximum number of items, which the stream will return.

Defaults to inf.


limit - Integer. Limit up to which integers can be returned by the stream.

If no limit is passed, returned integers might go up to default limit 65536.




Examples



p = PSVdif([3, 2], 10)


p.asStream.nextN(15)



a = Sieve(7, 30)


q = PSVdif([1, a], 20)


q.asStream.all



r = PSVdif([1, a], limit: 15)


r.asStream.all