He who is Shy* gave you the germ of an answer, but only the germ. The basic technique for converting a value into a string in the C pre-processor is indeed via the ‘#’ operator, but a simple transliteration of the proposed solution gets a compilation error: #define TEST_FUNC test_func #define TEST_FUNC_NAME #TEST_FUNC #include <stdio.h> … Read more
Readability is more important for tests. If a test fails, you want the problem to be obvious. The developer shouldn’t have to wade through a lot of heavily factored test code to determine exactly what failed. You don’t want your test code to become so complex that you need to write unit-test-tests. However, eliminating duplication … Read more
You don’t need the constant, but I don’t think you can eliminate symbol-to-string: class Example attr_reader :name, :age def initialize args args.each do |k,v| instance_variable_set(“@#{k}”, v) unless v.nil? end end end #=> nil e1 = Example.new :name => ‘foo’, :age => 33 #=> #<Example:0x3f9a1c @name=”foo”, @age=33> e2 = Example.new :name => ‘bar’ #=> #<Example:0x3eb15c @name=”bar”> … Read more
[The best answer was, unfortunately, deleted by a moderator because it was a link-only answer. I understand why link-only answers are discouraged; deleting it, however, has robbed future seekers of very useful information. The link has remained stable for more than seven years and continues to work at the time of this writing.] I strongly … Read more
In order to solve this problem with templates, you have to use a template template parameter. Unfortunately, you cannot pass template template function as a type, because it has to be instantiated first. But there is a workaround with dummy structures. Here is an example: template <typename T> struct a { static void foo (T … Read more
A mixin is just a different conceptual idea, of how to organize code and inheritance. You can of course combine it with using classical or prototypal inheritance, but it also works stand-alone, so to speak. For instance, instead of creating “delegated” object properties/lookups (like prototypal inheritance), we would truly “form” new stand-alone objects, from multiple … Read more
String literals are a corner case : they trigger the creation of the literal in static memory, and its access as a char array. Note that the following doesn’t compile, despite 42 being an int literal, because it is not implicitly allocated : int *p = &42; In all other cases, you are responsible of … Read more
He who is Shy* gave you the germ of an answer, but only the germ. The basic technique for converting a value into a string in the C pre-processor is indeed via the ‘#’ operator, but a simple transliteration of the proposed solution gets a compilation error: #define TEST_FUNC test_func #define TEST_FUNC_NAME #TEST_FUNC #include <stdio.h> … Read more
If you find a bug in your copy-paste code, you will need to fix it every place you did and hope you can remember them all (this also holds for changed requirements). If you keep logic in one place, it is easier to change when needed (so if you decide that the application needs updating, … Read more
Perhaps you don’t extend a controller but it is possible to extend a controller or make a single controller a mixin of multiple controllers. module.controller(‘CtrlImplAdvanced’, [‘$scope’, ‘$controller’, function ($scope, $controller) { // Initialize the super class and extend it. angular.extend(this, $controller(‘CtrlImpl’, {$scope: $scope})); … Additional extensions to create a mixin. }]); When the parent controller … Read more