Coldfusion check field dynamically Compare len check vs eq ""

Question

I have a test in a function to make sure the form fields are there.

Which of these would you use? and why?

instead of trim(form[arguments.fieldname]) eq ""
len(trim(form[arguments.fieldname])) eq 0

Is there a true benefit to either one over the other?

score 0 · Accepted Answer · edited May 23 '17 at 11:50

0

They are equivalent. The choice is one of style. Do note that those who prefer len tend to use the return value as an implicit boolean (so, <cfif len(trim(form[arguments.fieldname]))>, without the eq 0), and this does seem to be generally regarded as more expressive.

But both work, and the performance differences are negligible. It is a question of readability, which is somewhat subjective.

See also.

edited May 23 '17 at 11:50

Community

1
1

answered Mar 07 '16 at 17:18

Tim Jasko

1,532
1
8
12

1

Also consider case when null is returned. Null is not "", so this condition might fail. – PatNowak Mar 07 '16 at 18:00

Coldfusion check field dynamically Compare len check vs eq ""

1 Answers1