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8.2.5 Concatenation Operator (&)

Used to force string concatenation of two expressions.
 

Syntax

result = expression1 & expression2

Arguments

result
Any variable.
expression1
Any expression.
expression2
Any expression.

Remarks

Whenever an expression is not a string, it is converted to a String subtype. If both expressions are Null, result is also Null. However, if only one expression is Null, that expression is treated as a zero-length string ("") when concatenated with the other expression. Any expression that is Empty is also treated as a zero-length string.
 

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