mdt - Is this VBScript string comparison to the empty string redundant? -


i'm dealing collection of vbscript code (microsoft deployment toolkit) , see follow idiom when comparing string see if has given value:

if (oenvironment.item("isosupgrade") <> "" , oenvironment.item("isosupgrade") = "1")

oenvironment.item property imagine return null/nothing/empty (haven't wrapped head around subtle differences).

does first comparison serve purpose? i'm guessing don't understand be. surely if the equality comparison returns true inequality comparison well, right? missing? null/nothing/empty?

you're right: if second condition true, first true. think first condition there completeness , makes sure "isosupgrade" isn't empty/null.

don't worry, you're not missing ;-)


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