What I recommend. Read code by people from different grad schools in the 1990s Oxford style Glasgow style or (this) Chalmers style (or this) York style Portland style or OGI style (or this) Utrecht style Yale style Special case: CMU/Elliott Read code by the old masters certain people (incomplete list) Marlow; Paterson; Peyton Jones; Gill; … Read more
The first way is easier to maintain. Each declaration is a single statement on a single line, so you can easily add, remove, and reorder the declarations. With the second way, it is annoying to remove the first or last declaration because they start from the var keyword and finish with the semicolon respectively. Every … Read more
As of vim 7.3, you can use set colorcolumn=80 (set cc=80 for short). Since earlier versions do not support this, my .vimrc uses instead: if exists(‘+colorcolumn’) set colorcolumn=80 else au BufWinEnter * let w:m2=matchadd(‘ErrorMsg’, ‘\%>80v.\+’, -1) endif See also the online documentation on the colorcolumn option.
I don’t think it will make a significant difference in compile time but #pragma once is very well supported across compilers but not actually part of the standard. The preprocessor may be a little faster with it as it is more simple to understand your exact intent. #pragma once is less prone to making mistakes … Read more
This notation comes from AOSP (Android Open Source Project) Code Style Guidelines for Contributors: Follow Field Naming Conventions Non-public, non-static field names start with m. Static field names start with s. Other fields start with a lower case letter. Public static final fields (constants) are ALL_CAPS_WITH_UNDERSCORES. Note that the linked style guide is for code … Read more
You can simply use: v = 1 – v; This of course assumes that the variable is initialised properly, i.e. that it only has the value 0 or 1. Another method that is shorter but uses a less common operator: v ^= 1; Edit: To be clear; I never approached this question as code golf, … Read more
typeof is safer as it allows the identifier to never have been declared before: if(typeof neverDeclared === “undefined”) // no errors if(neverDeclared === null) // throws ReferenceError: neverDeclared is not defined
I would prefer it – vec.begin() precisely for the opposite reason given by Naveen: so it wouldn’t compile if you change the vector into a list. If you do this during every iteration, you could easily end up turning an O(n) algorithm into an O(n^2) algorithm. Another option, if you don’t jump around in the … Read more
There must be a clear distinction between the PHP short tag (<?) and shorthand echo tag (<?=) The former is prohibited by the PHP Coding standard, mostly out of common sense because it’s a PITA if you ever have to move your code to a server where it’s not supported (and you can’t enable it). … Read more
Without the main sentinel, the code would be executed even if the script were imported as a module.