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cf_getElementNo ( SearchString ; ElementList )

Get the line number of sought-after element in a list

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Klemens Müller - Show more from this author Klemens Müller http://www.klemenso.de

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

/*28.07.2006 by Klemens Müller, www.klemenso.de cf_getElementNo( SearchString ; ElementList ) Determines the number of first occurenc of the sought-after element in a list of elements 1. The element to be looked for. 2. The list in which one shall search. 3. The ending position of search string. 4. The extracted elements up to this position. 5. Returns the line number of search string. */ Let( [ spos = SearchString ; /*1*/ clist = ElementList ; /*2*/ fpos = Position( clist ; spos ; 1 ; 1 ) + Length( spos ) ; /*3*/ flist = Middle( clist ; 1 ; fpos ) ; /*4*/ out = ValueCount( flist ) /*5*/ ] ; out ) Click to copy

Determines the number of first occurenc of the sought-after element in a list of elements

 

Comments

		Oliver Reid Feb 28, 2009
I believe this will not work if a an earlier list element contains a later one: e.g., firstgamma gamma and you search for 'gamma'

		Oliver Reid Feb 28, 2009
On reflection I suggest this change: fpos = Position( ¶&clist&¶ ; ¶&spos&¶ ; 1 ; 1 ) + Length( spos )+1 ;

		John Jackson, Santa Rosa CA USA Aug 22, 2010
This won't work if SearchString isn't in ElementList in the first place; it will return a value anyways.

		John Jackson, Santa Rosa CA USA Aug 22, 2010
Here's a revised version: Parameters: element_list, search_string Let( [ s_pos = Position ( ¶&element_list&¶ ; ¶&search_string&¶ ; 1 ; 1 ) ; f_pos = s_pos + Length ( search_string ) - 1 ; f_list = Middle ( element_list ; 1 ; f_pos ) ; index = ValueCount ( f_list ) ] ; If ( s_pos ; index ; 0 ) )

		Edward Souza, Sao Paulo, BR Sep 12, 2010
Hello, all, Well done, Mr. Jackson. Thanks for sharing. :-)

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