WeekDaysInRange ( startDate ; endDate ; weekDays )

Returns a list of only those dates in the specified range whose day-of-week is included in the weekDays parameter.

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Michael Horak - Show more from this author
*COMMENT Visual Realisation

Sample input:

WeekDaysInRange ( Date ( 3 ; 1 ; 2006 ) ; Date ( 4 ; 0 ; 2006 ) ; "1¶7" )

Sample output:

03/04/2006
03/05/2006
03/11/2006
03/12/2006
03/18/2006
03/19/2006
03/25/2006
03/26/2006
(if current date format is "mm/dd/yyyy")

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

/*
WeekDaysInRange  function

Author
*COMMENT Visual Realisation

Format
WeekDaysInRange ( startDate ; endDate ; weekDays )

Parameters
startDate - any calendar date;
endDate - any calendar date;
weekDays - a list of days of week (as numbers), separated by carriage returns.

Data type returned
text

Description
Returns a list of only those dates in the specified range whose day-of-week is included in the weekDays parameter.

March 17, 2006
*/

Case ( 
startDate and not IsEmpty ( FilterValues ( DayOfWeek ( startDate ) ; weekDays ) ) ; 
startDate & ¶
)
&
Case ( 
startDate < endDate ; 
WeekDaysInRange ( startDate + 1 ; endDate ; weekDays )
)

Returns a list of only those dates in the specified range whose day-of-week is included in the weekDays parameter.

The weekDays parameter requires a list of days-of-week (as numbers), separated by carriage returns. For example "1¶7" indicates Sundays and Saturdays.

This formula:
WeekDaysInRange ( Date ( 3 ; 1 ; 2006 ) ; Date ( 4 ; 0 ; 2006 ) ; "1¶7" )
returns all Sundays and Saturdays in the month of March, 2006.

Comments

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

WeekDaysInRange ( startDate ; endDate ; weekDays )

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