ssas - Function to apply member function to set -

is there mdx function takes set argument , member function separate argument , returns set function applies members?

i have set of selected dates, , want return set same dates less 1 year, need use parallelperiod on each member.

this approach seems work ok:

with    set [fewdays]        [date].[calendar].[date].&[20070121]     :        [date].[calendar].[date].&[20070127]    set [thedates]      generate     (       [fewdays] s      ,{parallelperiod       (         [date].[calendar].[calendar year]        ,1        ,s.currentmember       )}     )  select    {} on 0  ,[thedates] on 1 [adventure works]; 

i think prettier , avoids generate may faster:

with    set [fewdays]        [date].[calendar].[date].&[20070121]     :        [date].[calendar].[date].&[20070127]    member [measures].[cntmembers]      [fewdays].count    set [lastmemlastyear]      {       parallelperiod       (         [date].[calendar].[calendar year]        ,1        ,tail([fewdays]).item(0)       )     }    set [thedates]        [lastmemlastyear].item(0).lag(       [measures].[cntmembers])     :        [lastmemlastyear].item(0)  select    {} on 0  ,[thedates] on 1 [adventure works];