I used to just do use modulename – then, as my application grew, I found it more and more difficult to find the source to functions (without turning to grep) – some of the other code floating around the office still uses a one-subroutine-per-file, which has its own set of problems, but it makes it … Read more
Another approach is to make a util package and split up your functions into different modules within that package. The basics of packages: make a directory (whose name will be the package name) and put a special file in it, the __init__.py file. This can contain code, but for the basic package organization, it can … Read more
Separating generated JS from source TS I would recommend generating a single-file output. Be it browser or for Node, its just a better idea. Bear in mind that most IDEs can hide .gitignored files, so an uncluttered file-pane shouldn’t be a problem to attain, even if you let the .js files sit right next to … Read more
You can always put a specific font family name in quotes, double or single, so Arial, “Arial”, and ‘Arial’ are equivalent. Only the CSS-defined generic font family names like sans-serif must be written without quotes. Contrary to popular belief, a font name consisting of space-separated names such as Times New Roman need not be quoted. … Read more
From Python’s Class module documentation: Private” instance variables that cannot be accessed except from inside an object don’t exist in Python. However, there is a convention that is followed by most Python code: a name prefixed with an underscore (e.g. _spam) should be treated as a non-public part of the API (whether it is a … Read more
The lib directory, for most of my projects, is where I place shared components that might be used in multiple facets of my application. Things in this folder should not be tightly coupled to your application, and should theoretically be able to be plucked from one project to another, and work as expected (assuming all … Read more
As of Rails 3.2, Rack middleware belongs in the app/middleware directory. It works “out-of-the-box” without any explicit require statements. Quick example: I’m using a middleware class called CanonicalHost which is implemented in app/middleware/canonical_host.rb. I’ve added the following line to production.rb (note that the middleware class is explicitly given, rather than as a quoted string, which … Read more
There is no difference in bytecode between while(true) and for(;;) but I prefer while(true) since it is less confusing (especially for someone new to Java). You can check it with this code example void test1(){ for (;;){ System.out.println(“hello”); } } void test2(){ while(true){ System.out.println(“world”); } } When you use command javap -c ClassWithThoseMethods you will … Read more
It’s pretty easy: 0-80: Always ok 80-120: Acceptable (if there’s a good reason for it, e.g. a string where wrapping it would be ugly) 120+: Lint tools, IDEs, etc. MUST show a warning (but never an error!) since the line might be ugly/unreadable/…
use ‘raise’ for exceptions to be caught, and ‘fail’ for serious errors which are not meant to be handled This is not what the official style guide or the link you provided say on the matter. What is meant here is use raise only in rescue blocks. Aka use fail when you want to say … Read more