prepComma: Prepend a comma to a non-empty string

Description

Utility function that prepends a comma before the input string if the string is non-empty.

Usage

1

Arguments

s

Character string.

Value

If s is non-empty, returns paste(",", s), otherwise returns s.

Author(s)

Peter Langfelder

Examples

1
2
prepComma("abc");
prepComma("");

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