sutton050

What does " const " mean to you?  Does it just mean a value can not be changed?  If so, you may want to read on! Const is one of those things, which though not unique to C++ is given more meaning when you leverage C++ fully, const allows you to not only define a value as invariant, but also to instruct other programmers coming to your code how a value should be used, how when it is passed as a parameter it should be treated and ultimately how to protect data from needless alteration, de-synchronisation or simple corruption. Const is therefore your friend, and if you've come to C++ from C, Java, C#, Python or one of the other myriad of languages which don't treat const with as much relevance as C++ you may want to read more than I can say on the topic.  Bjarne Stroustrop (the inventor of C++) and other authors on the topic (notably Scott Meyers & Herb Sutter) explain in much more detail than I ever could, but for brevity here are two examples of const from my own c...

Whilst cutting code I employ a coding style, which I enforce, whereby I output the scope of the variable being used with a prefix. "l_" for Local "m_" for Member "c_" for constant "e_" for enum And so forth, for static, parameter and a couple of others.  I also allow compounds of these, so a static constant would be: "sc_" This is useful in many languages, and imperative in those which are not type strict, such as Python. Some confuse this with "Hungarian Notation", it's not.  Hungarian notation is the practice of prefixing a type notification to the variable name, for example "an integer called count" might be "iCount". I have several problems with anyone using Hungarian Notation, and argue against it thus. With modern code completion and IDE lookup tools this is really not needed, with useful and meaningful naming of your variables the type is not needed and finally there are multiple types with the s...