How to compare a variable with NULL

[Susan Ferraz]

I’m writing a tcl program to verify if a field is blank. If it is then the message will be killed. My problem is the field is coming with double-quotes (“”) instead of blank. How do I write the cequal statement to compare a variable with a NULL value?

The statement below works on messages I receive where the field is blank.

if {[cequal $var1″”]}

Topic

[Max Drown (Infor)]

if {[cequal $var1 “”] || [cequal $var1 “”””]}

Code:

set var1 “”””

if {[cequal $var1 “”] || [cequal $var1 “”””]} {
   puts “Hello.”
}

-- Max Drown (Infor)

[Susan Ferraz]

Hi Max,

Your suggestion works. Thanks!

Susan

[Author]

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