Assignment2

ScopedArray:

use 'class' or 'typename' for template parameter

http://stackoverflow.com/questions/213121/c-use-class-or-typename-for-template-parameters

They are equivalent after all.

an error:

cannot convert 'this' pointer from 'const ScopedArray' to 'ScopedArray &

how to solve it:

make the function in class 'const'

http://stackoverflow.com/questions/928662/what-does-cannot-convert-this-pointer-from-const-hand-to-hand-mean-c

an error

error C2440: 'initializing' : cannot convert from 'const ScopedArray' to 'bool'

conversion operator

chapter11 p548

const, if you have const object, your operator should also be const