There is nothing wrong in concatenating two strings with +. Indeed it’s easier to read than ”.join([a, b]). You are right though that concatenating more than 2 strings with + is an O(n^2) operation (compared to O(n) for join) and thus becomes inefficient. However this has not to do with using a loop. Even a … Read more
Some projects have all data twice. Once as domain objects, and once as data transfer objects. This duplication has a huge cost, so the architecture needs to get a huge benefit from this separation to be worth it.
If you define patterns as anti-patterns just because there are some situations where it does not fit, then YES it’s an anti pattern. But with that reasoning all patterns would also be anti patterns. Instead we have to look if there are valid usages of the patterns, and for Service Locator there are several use … Read more
I’ll make my point very clear: a singleton with parameters is not a singleton. A singleton, by definition, is an object you want to be instantiated no more than once. If you are trying to feed parameters to the constructor, what is the point of the singleton? You have two options. If you want your … Read more
Second Class Citizens – test code isn’t as well refactored as production code, containing a lot of duplicated code, making it hard to maintain tests.
Merging will not be such a big nightmare as it will be when you’ll get 30000 LOC file in the future. So: Stop adding more code to that file. Split it. If you can’t just stop coding during refactoring process, you could leave this big file as is for a while at least without adding … Read more
I am consistently disappointed by most programmers’ tendency to mix their UI-logic in the data access layer: SELECT FirstName + ‘ ‘ + LastName as “Full Name”, case UserRole when 2 then “Admin” when 1 then “Moderator” else “User” end as “User’s Role”, case SignedIn when 0 then “Logged in” else “Logged out” end as … Read more
Anti-patterns are certain patterns in software development that are considered bad programming practices. As opposed to design patterns which are common approaches to common problems which have been formalized and are generally considered a good development practice, anti-patterns are the opposite and are undesirable. For example, in object-oriented programming, the idea is to separate the … Read more