[julia-users] Change field value of a composite type when name of the field is in a variable

[curiouslearn]

Hi All,

Suppose I have a composite type and an instance of it:

type myType
           numLines::Int
           avgLength::Float64
       end

inst = myType(10, 8.5)


I want to change, say numLines of inst1 to 20. I know I can do 
 

inst.numLines = 20


However, suppose the field that has to be changed is determined by the 
program. Say, I have, 

varToChange = "numLines"

How can I use *varToChange* to change the value of *numLines* in *inst*? 

Thank you.