لطفا منتظر باشید ...
Discussion
This statement is more general than Item 18's specific treatment.Avoid data with external linkage at namespace scope or as static class members. These complicate program logic and cause tighter coupling between different (and, worse, distant) parts of the program. Shared data weakens unit testing because the correctness of a piece of code that uses shared data is conditioned on the history of changes to the data, and further conditions the functioning of acres of yet-unknown code that subsequently uses the data further.References). The order-of-initialization rules are subtle; prefer to avoid them, but if you do have to use them then know them well and use them with great care.Item 7.) Strive for "shared-nothing;" prefer communication (e.g., message queues) over data sharing.Cargill92].)
