What is the better way to check for an empty string in Delphi?

Question

A common condition that all programs should do is to check if string are empty or not.

Take the below statements:

(1)

if Len         


        

Answer 1

Semantically they are identical and there will be no discernible performance difference. So we are left looking at clarity for the reader of the code.

if Str='' then

is the readable version in my opinion. Look at the title of your question:

What is the better way to check for an empty string?

In your head you view this as the empty string as opposed to the string with length 0. So write the code the way that matches your viewpoint.