Whenever a property on a dynamic object is resolved, the runtime tries to find a property that is defined at compile time. From DynamicObject doco: You can also add your own members to classes derived from the DynamicObject class. If your class defines properties and also overrides the TrySetMember method, the dynamic language runtime (DLR) … Read more
how the Expando was able to hide the method of one of its interfaces. Because as you correctly found out in the documentation, the indexer is an explicit interface implementation. From Explicit Interface Implementation Tutorial: A class that implements an interface can explicitly implement a member of that interface. When a member is explicitly implemented, … Read more
I believe it’s a ClassLoader you’re after. I suggest you start by looking at the example below which loads class files that are not on the class path. // Create a File object on the root of the directory containing the class file File file = new File(“c:\\myclasses\\”); try { // Convert File to a … Read more
Contrary to some of the answers here, editing the stylesheet itself with Javascript is not only possible, but higher performance. Simply doing $(‘.myclass’).css(‘color: red’) will end up looping through every item matching the selector and individually setting the style attribute. This is really inefficient and if you have hundreds of elements, it’s going to cause … 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
It is important to explicitly call delete because you may have some code in the destructor that you want to execute. Like maybe writing some data to a log file. If you let the OS free your memory for you, your code in your destructor will not be executed. Most operating systems will deallocate the … Read more
Read one character at a time (using getc(stdin)) and grow the string (realloc) as you go. Here’s a function I wrote some time ago. Note it’s intended only for text input. char *getln() { char *line = NULL, *tmp = NULL; size_t size = 0, index = 0; int ch = EOF; while (ch) { … Read more
Based on Wikipedia’s articles. Greedy Approach A greedy algorithm is an algorithm that follows the problem solving heuristic of making the locally optimal choice at each stage with the hope of finding a global optimum. In many problems, a greedy strategy does not in general produce an optimal solution, but nonetheless a greedy heuristic may … Read more
The short answer is YES, it is a bad practice to use dynamic. Why? dynamic keyword refers to type late binding, which means the system will check type only during execution instead of during compilation. It will then mean that user, instead of programmer, is left to discover the potential error. The error could be … Read more
This is similar to: DLR return type You do need to match the return type specified by the ReturnType property. For all of the standard binaries this is fixed to object for almost everything or void (for the deletion operations). If you know you’re making a void call I’d suggest wrapping it in: Expression.Block( call, … Read more