| Testing for structure equality during loops [message #91042] |
Wed, 27 May 2015 08:48 |
evan.jones
Messages: 1
Registered: May 2015
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Junior Member |
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Good morning everyone. I have some structures within a class that I want to loop through. Take the following class as an example and pretend that I have included the init, getProperty, and setProperty methods - and that the structure field values in example_class__define are those assigned in the init method.
example_class::method1
for *self.var3 = self.var1, self.var2 do begin
print, 99
*self.var3 = self.var2
endfor
end
example_class::method2
while self.var1 NE self.var2 do begin
print,99
self.var1 = self.var2
endwhile
end
example_class__define
struct:{name,$
var1:{name,a:1,b:2,c:ptr_new(1)},$
var2:{name,a:1,b:2,c:ptr_new(10)},$
var3:ptr_new(/allocate_heap)}
end
Method1 won't compile and when I try to run method22 I receive this sort of error: "Struct expression not allowed in this context: <PtrHeapVar115>." My program is a bit more complicated as I am trying to loop through linked lists, but hopefully these simplified examples convey my issue. How might I accomplish the task of looping through structures by testing for the equality or 'sameness' of all the fields of different structures without testing the equality of each corresponding field individually?
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