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logical_true vs nothing in an if statment [message #85926] Wed, 18 September 2013 12:44 Go to previous message
munka is currently offline  munka
Messages: 36
Registered: December 2009
Member
Why is the behavior of the 'if' statement in idl like this? I was under the impression putting nothing there is equivalent to the logical_true() statment???!



IDL> for i=0,10 do if i then print,'true' else print,'false'
false
true
false
true
false
true
false
true
false
true
false
IDL> for i=0,10 do if logical_true(i) then print,'true' else print,'false'
false
true
true
true
true
true
true
true
true
true
true

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