methods

问题 Is there any way to stop a running loop inside another method or insert a break statement dynamically in C#? Thanks Edit : I want to be able to dynamically intercept the method and insert a break to stop the loop when an event gets triggered in another function.I have several instances of the class and I want to stop the loop in each instance whenever required and manage all the instances. Consider multiple instances to be in a generic list Example : List<myclass> objlist=new List<myclass>();

问题 On MSDN I found: In C#, every executed instruction is done so in the context of a method. But I also read that an int A=5; statement can be in the class body. It seems it's not in a method body, so why this is possible? It is probably just term confusion but I would like to know. 回答1: class Example { int A = 5; } is equal to class Example { int A; public Example() { A = 5; } } So the assignment is still part of a method (the constructor). 回答2: Adrian is correct. To clarify further: "int A = 5

问题 I would like to be prompted when the game finishes; If I would like to play again. And with a Y/N input: either exiting the game or repeat it. How do I go about this in the most efficient way? EDIT: Description Resource Path Location Type The method playAgain() is undefined for the type Main Main.java /ScaredyCat/src/se/gruppfisk/scaredycat/main line 12 Java Problem public boolean playAgain(Scanner keyboard) { try { System.out.print("Do you want to play again? (Y/N): "); String reply =

问题 I need quite the opposite of what most people want to juggle with: I have a StackTraceElement with className and methodName. As the method belongs to an interface given class implements, I need a way I can ask the method which interface it originates in. I can invoke Class.forName(className) and can also invoke clazz.getMethod(methodName) , however method.getDeclaringClass() returns with the mentioned class' name instead of its original interface'. I don't want to iterate through all the

问题 I have a constructor like as follows: public Agent(){ this.name = "John"; this.id = 9; this.setTopWorldAgent(this, "Top_World_Agent", true); } I'm getting a null pointer exception here in the method call. It appears to be because I'm using 'this' as an argument in the setTopWorldAgent method. By removing this method call everything appears fine. Why does this happen? Has anyone else experienced this? 回答1: You can pass this to methods, but setTopWorldAgent() cannot be abstract. You can't make

问题 def doSomething(value) if (value.is_a?(Integer)) print value * 2 else print "Error: Expected integer value" exit end end Can I tell a Ruby method that a certain parameter should be an Integer, otherwise crash? Like Java. 回答1: No, you can't. You can only do what you're already doing: check the type yourself. 回答2: I'm late to the party, but I wanted to add something else: A really important concept in Ruby is Duck Typing. The idea behind this principle is that you don't really care about the

问题 Assume that you have a Python (>=2.6) class with plenty (hundreds!) of methods. Now someone wants to subclass that but realized that most of the base class methods needs only some simple 'tuning'. Also there are only handful of different ways to tune those methods. Some involving input transformations, some output transformations, some both. To be more specific I'm looking for a (simple) solution for the inheritance where I just could provide the base class and a list (of lists) of methods to

问题 Can final keyword be used for a method? 回答1: Absolutely! The final keyword can be applied to just about anything, in each case meaning "you don't get to change this anymore." Here's what it means when applied to... a variable : You simply cannot assign the variable a new value (rendering it a constant , of course) a method : You cannot re-implement (i.e., override) this method in a subclass a class : You cannot define a subclass In each case we're simply indicating: once this thing is

问题 Just wondering if you can return two arguments in an objective c method, for example I'd like to return a cartesian coordinate (x,y), basically two ints. is the only way to do this by creating a class and returning an instance? Is there some other way I'm not thinking of, kind of a beginner here. (Syntactical help would also be appreciated.) Thanks, Nick 回答1: You can only return one value from a function (just like C), but the value can be anything, including a struct. And since you can

问题 Some of you may know the method in Ruby that allows you to reverse an array: arr = ['a', 'b', 'c'] puts arr.reverse #=> ['c', 'b', 'a'] How would one write a function (or prototype if you wish) in Javascript? 回答1: A quick glance at the array page in the manual shows a reverse method > arr = ['a', 'b', 'c']; arr.reverse(); console.log(arr); [ 'c', 'b', 'a' ] 回答2: Use Array.reverse() method. 回答3: function fun() { var c=["gh","jk","yu"]; c.reverse(); alert(c); } 来源： https://stackoverflow.com