An elaborated type specifier is a type name preceded by either the class, struct, enum, or union keyword. class identifier struct identifier enum identifier union identifier An elaborated type specifier is used either for emphasis, or to reveal a type name that is hidden by the declaration of a variable with the same name in … Read more
If you use run time dynamic linking (uses LoadLibrary to load the dll) you cannot access the class directly, you need to declare a interface for your class and create a function that returns a instance of this class, like this: class ISDLConsole { public: virtual void getInfo(int,int) = 0; virtual void initConsole(char*, char*, SDL_Surface*, … Read more
max() takes a key parameter, a function that when passed one of the objects returns the value by which to compare them. Use operator.attrgetter() to get that value: from operator import attrgetter max(self.allPartners, key=attrgetter(‘attrOne’)) This returns the matching object for which that attribute is the maximum. If you wanted to store just that maximum value … Read more
I would make the choice based on the following criteria reference type vs value type semantics. If 2 objects are only equal if they are the same object, it indicates reference type semantics => class. If the value of its members defines equality (e.g. 2 DateTimes are equal if both represent the same point in … Read more
Pass a reference to the Bar object, like so: class Foo(object): def __init__(self): self.text = “Hello World” # has to be created first, so Bar.__init__ can reference it self.bar = Bar(self) class Bar(object): def __init__(self, parent): self.parent = parent self.newText = parent.text foo = Foo() Edit: as pointed out by @thomleo, this can cause problems … Read more
I rewrote your code in a more organized, better-practiced way: import tkinter as tk class Demo1: def __init__(self, master): self.master = master self.frame = tk.Frame(self.master) self.button1 = tk.Button(self.frame, text=”New Window”, width = 25, command = self.new_window) self.button1.pack() self.frame.pack() def new_window(self): self.newWindow = tk.Toplevel(self.master) self.app = Demo2(self.newWindow) class Demo2: def __init__(self, master): self.master = master self.frame … Read more
Here’s what the method may look like: private static object MagicallyCreateInstance(string className) { var assembly = Assembly.GetExecutingAssembly(); var type = assembly.GetTypes() .First(t => t.Name == className); return Activator.CreateInstance(type); } The code above assumes that: you are looking for a class that is in the currently executing assembly (this can be adjusted – just change assembly … Read more
A Java fully qualified class name (lets say “N”) has the structure N.N.N.N The “N” part must be a Java identifier. Java identifiers cannot start with a number, but after the initial character they may use any combination of letters and digits, underscores or dollar signs: ([a-zA-Z_$][a-zA-Z\d_$]*\.)*[a-zA-Z_$][a-zA-Z\d_$]* ———————— ———————– N N They can also not … Read more
The only way is to define() an expression and then use that constant in the class define(‘foobar’, ‘foo’ . ‘bar’); class Foo { const blah = foobar; } echo Foo::blah; Another option is to go to bugs.php.net and kindly ask them to fix this.
Here is a quick example of a binary insert: class Node: def __init__(self, val): self.l_child = None self.r_child = None self.data = val def binary_insert(root, node): if root is None: root = node else: if root.data > node.data: if root.l_child is None: root.l_child = node else: binary_insert(root.l_child, node) else: if root.r_child is None: root.r_child = … Read more