Well, it's not quite that easy. Foods that have been processed with added sugars generally aren't as healthy a choice, it's true. But simple carbs occur naturally in some foods that are part of a balanced diet. For example, most milk and other dairy products contain lactose, or milk sugar.
Sometimes a codeline or branch is primarily intended for a single person to perform a single task or series of tasks. In these cases it is common the prevent all users other than the codeline owner from checking-out (and in) files from the codeline.
Code coverage means, how well your test set is covering your source code. i.e. to what extent is the source code covered by the set of Test cases. As mentioned in above answers, there are various coverage criteria, like paths, conditions, functions, statements, etc.