DYNAMIC ARRAY.searchRange

Scans the array to find an element that matches the search parameter.

Syntax

searchRange( key STRING, value STRING,
                 from INTEGER, to INTEGER )
   RETURNS INTEGER
  1. key is the name of the RECORD member when the array is structured.
  2. value is the value to look for.
  3. from is the start index (inclusive).
  4. to is the end index (inclusive).

Usage

The searchRange() method is similar to the search() method, except that array rows are scanned from a given index to an ending index.

The method returns the index of the first occurrence found in the specified range.

The method returns zero, if no matching element is found in the specified range.

If the start index is lower than 1, the search starts at index 1.

If the end index is lower than the start index, the method returns zero.

If the end index is greather as the array length, it is ignored and the search is done until the last element of the array.

Example

MAIN
    DEFINE a DYNAMIC ARRAY OF RECORD
                 name STRING
             END RECORD

    LET a[1].name = "Mike"
    LET a[2].name = "Phil"
    LET a[3].name = "John"
    LET a[4].name = "Phil"

    DISPLAY a.searchRange("name", "John", 1,  2) -- Shows 0
    DISPLAY a.searchRange("name", "Phil", 1,  2) -- Shows 2
    DISPLAY a.searchRange("name", "Phil", 3,  4) -- Shows 4
    DISPLAY a.searchRange("name", "Phil", 0, 10) -- Shows 2

END MAIN