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Version: 7.0

CONCAT operator

The CONCAT operator creates a property that implements a string concatenation.

Syntax​

CONCAT separatorExpr, concatExpr1, ..., concatExprN

Description​

The CONCAT operator creates a property that concatenates the values of concatExpr1, ..., concatExprN, in the order written, placing the separatorExpr separator between them. The handling of the separator and of NULL operands follows the CONCAT concatenation.

Parameters​

  • separatorExpr

    Expression whose value is used as the separator. It is most often a string literal but may be any string expression.

  • concatExpr1, ..., concatExprN

    Expressions whose values are concatenated. At least one operand must be specified.

Examples​

CLASS Person;
firstName = DATA STRING[100] (Person);
middleName = DATA STRING[100] (Person);
lastName = DATA STRING[100] (Person);

// if some part of the name is not specified, then this part will be skipped along with a space
fullName(Person p) = CONCAT ' ', firstName(p), middleName(p), lastName(p);