Le 27/07/2016 à 22:19, Scott Kostyshak a écrit :
For the function definition, the difference is in terms of
documentation. If you are adding const in the definition because you
find it clearer this way, then it is a good reason to change it.
Yes this was my intention. To me it has the same purpose as declaring a
local variable const in the body of a function. For example, if I see
that "param" is used at the end of a function I know that "param" is a
const parameter, I don't have to read the whole function looking to see
if param was modified in the middle. In addition to readability, I think
it can in some (unlikely) situations prevent future coding mistakes.
e.g. I might write the code and at the end of the body I use "param"
making the assumption that it has the same value that it started with.
If someone (e.g. future me) comes along and changes the value in the
middle of the function they'll get a compiler error and think twice
before removing const. I think the benefits are especially useful for
long functions.
Do you also const parameters and const local variables useful for
understanding and future-proofing functions or not really?
All these are good reasons.
