D4 D5 SW By Roman Linde . Calculates expressions entered at runtime as a string. Very fast generic lexer driven by a regular expression engine. CB4 CB5 D3 D4 D5 SW By Andrew Tumashinoff . It checks the expression syntax and generates the real machine code for evaluating given formula.
Functions can have any number of parameters.
Use RapidEvaluator to calculate formulas that is unknown at the stage of program compilation, for example to plot and tabulate functions, to make numerical computations and so on. By Ralf Junker . RjPcre means Perl Compatible Regular Expressions for Delphi. PCRE itself is a C-library of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5. PCRE's Perl 5 syntax supports full substring capturing, case sensitive and insensitive matching, and greedy as well as non-greedy repetition quantifiers.