MSDN писал(а):Some functions have two versions: one that returns a Variant data type and one that returns a String data type. The Variant versions are more convenient because variants handle conversions between different types of data automatically. They also allow Null to be propagated through an expression. The String versions are more efficient because they use less memory.
Consider using the String version when:
Your program is very large and uses many variables.
You write data directly to random-access files.
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