The SDL Component Suite is an industry leading collection of components supporting scientific and engineering computing. Please visit the SDL Web site for more information....


Home MathPack Math2 Class TStringSearch Properties SearchExpression
See also: InString, DoSearch 

SearchExpression

Unit: SDL_math2
Class: TStringSearch
Declaration: property SearchExpression: string;

The property SearchExpression contains the search expression. The search expression may be any number of substrings in a logical combination of ANDs, ORs and NOTs. Parantheses may be used to adjust operator precedence. The logical operators are represented by the following single-character symbols:

Operator Symbol
AND + (plus)
OR , (comma)
NOT ~ (tilde)

Hint: Please note that in the current implementation the substrings to be searched must consist of the digits '0..9', the characters 'a..z', 'A..Z', '_', the German umlauts 'äöüÄÖÜ', and the German 'ß'. All other characters result in an "invalid search expression" exception.

Following are a few examples of valid search expressions:

Expression Explanation
(wine,water)+taste either "wine" or "water" and "taste" are required to be part of the search string
(wine+milk),water both "wine" and "milk", or "water" are part of the search string
micro+~processor "micro" but not "processor" are part of the search string


Last Update: 2023-Feb-06