# CombineLines ( RC ; decimal ; ObjList )

Get a subslist under mask

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Erich Schmidt |

CombineLines(""; 37; "five¶six¶seven¶eight¶nine¶ten")

"five¶seven¶ten"

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

The function returns a sublist of "ObjList". The parameter "decimal" determines wich lines are selected.

Each line of "ObjList" is assigned to a specific digit in the binary representation of "decimal" .

The first line of "ObjList" is assigned to the least significant bit (bit 0) of "decimal", the second line is assigned to bit 1 and so on.

A line of "ObjList" is selected, if the assigned bit is 1.

Parameters:

RC must be empty

decimal can be a decimal number between 0 and 2^ValueCount(ObjList) - 1

ObjList is any list

Further Examples:

The expression

let([

$Plist= GetPatternList("“; 5; 2);

$ObjList="London¶Paris¶New York¶Berlin¶Rostock"

];

CustomList(1;ValueCount($Plist);"Substitute(CombineLines(\"\";GetValue($Plist;[n]);$ObjList ) ;\¶;\"-\") " )

)

returns all possible combinations of two lines

Berlin-Rostock

New York-Rostock

Paris-Rostock

London-Rostock

New York-Berlin

Paris-Berlin

London-Berlin

Paris-New York

London-New York

London-Paris

Executing the term

let([

nObj=10;

$Plist= CustomList(1;nObj;"2^[n]-1");

$ObjList=CustomList(1;ValueCount($Plist);"[n]^3")

];

CustomList(1;ValueCount($ObjList);"Evaluate(Substitute(CombineLines(\"\";GetValue($Plist;[n]);$ObjList ) ;\¶;\"+\") ) " )

)

you get the following list, where line No. n contains the sum of the first n cubes (this is the same as the square of the sum 1+2+3+...+n)

1

9

36

100

225

441

784

1296

2025

3025

The expression

Let(

[

$Plist= "3¶5¶9¶17¶96¶128¶257";

$ObjList="Some girls¶will¶won't¶need a lot of lovin' and¶don't¶Well, I know I've got the fever¶but I don't no why¶Some say they will and¶lie"

];

CustomList(1;ValueCount($Plist);"Substitute(CombineLines(\"\";GetValue($Plist;[n]);$ObjList ) ;\¶;\" \") " )

)

returns the beginning of a Racey song

Some girls will

Some girls won't

Some girls need a lot of lovin' and

Some girls don't

Well, I know I've got the fever but I don't no why

Some say they will and

Some girls lie

## Comments

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