Function RAt() Foundation
Determines the position of last occurrence of a substring within a character string.
RAt( <cSeek>, <cString>, [<nStartPos>] ) --> nPosition
RAt() searches the character string <cString> from the end (from the right) and returns the last position of <cSeek> as an integer numeric value. When <cSeek> is not found in <cString>, the return value is zero.
The character function RAt() determines the last position of a character substring within another character string. <cString> is searched from the right. The counterpart of RAt() is the function At() which searches a character string from the left (beginning) and determines the position of the first occurrence of a character substring within another character string. The $ operator is also similar and tests whether or not a character string is contained within another.
The functions RAt() and At() are often used in connection with the functions SubStr(), Left() or Right() to perform character string operations.
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