There really is no equivalent construct in Ruby. However, it looks like you are making one of the classic porting mistakes: you have a solution in language A and try to translate that into language B, when what you really should do is figure out the problem and then figure out how to solve it … Read more
It compiles in C++ because C++ needs to support dynamic initialization anyway, or you couldn’t have local static or non-local objects with non-trivial constructors. So since C++ has this complexity anyway, supporting that initialization like you show isn’t complicated to add anymore. In C that would be a big matter because C doesn’t have any … Read more
At novice level : Use instance variables when : Every variable has a different value for different object. E.g. name of student, roll number etc.. use static variables when : The value of the variable is independent of the objects (not unique for each object). E.g. number of students.
Figured it out. I had an apache config error on this line: Alias /static/ /home/daifotis/code/feris/sitestatic I should have written static without the trailing slash. With the trailing slash Apache will not expand the URL path. Alias /static /home/daifotis/code/feris/sitestatic
You can use the new OBJECT library feature introduced in CMake 2.8.8. The idea is explained here. Basically, the OBJECT library is a similar concept to the convenience library known from Autotools to group object files. Check the complete CMake OBJECT library tutorial.
You wouldn’t be able to use different seeds if it were static – the Random instance keeps track of that state. By default Random uses the current time as seed, but re-using a particular seed (i.e. new Random(42)) allows you to exactly repeat the sequence of random numbers – they will always be the same … Read more
This is not necessarily so. As long as your static logger exposes a method for: Injection of the classes you WANT injected, or Injection of the DI Container in an appropriate method call prior to running it (say in something like the asp.net global.asax Application_Start method), then you should be fine. Here’s an example. Take … Read more
Yes, they are initialized in the order in which they appear in the source. You can read all of the gory details in The Java Language Specification, §12.4.2. See step 9, which reads: … execute either the class variable initializers and static initializers of the class, or the field initializers of the interface, in textual … Read more
The this keyword is used with boost::bind when the function object you’re creating is bound to a object member function. Member functions can’t exist apart from instances, so when creating a functor object out of a member function with boost::bind, you need a pointer to an instance. That’s exactly what the this keyword actually is. … Read more
If you are using PHP 5.3.0 or greater, you can use the following: $classname::$$propertyname; Unfortunately, if you are using a version lower than 5.3.0, you are stuck using eval() (get_class_vars() will not work if the value is dynamic). $value = eval($classname.’::$’.$propertyname.’;’); EDIT: I’ve just said get_class_vars() wouldn’t work if the value is dynamic, but apparently, … Read more