methods

问题 I am developing an Android app with a 3rd-party library. I want to replace a method call in the library. Please note that I cannot obtain the library's source code, so that I have to change it at runtime. For example, let's assume there is doA() method in a class Foo in the library class Foo { doA() { //method body } ... } I want to replace the method body of doA() with my own code. I have done some exploration and found the following stackoverflow thread: Replacing a method call in a class

问题 I need to create a method in C using bitwise operations which checks if x + y will overflow or not. I can only use a maximum of 20 of the following operations; ! ~ & ^ | + << >> Keep in mind I have to test for both negative and positive numbers. I've tried several times to make it work. Is my logic sound? I'm going by: if (x + y) is less than x, then it has overflowed. Based on that logic, I wrote this; int addOK(int x, int y) { int sum = x + y; int nx = ((~x) + 1); int check = (sum + nx)>>31

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: Why do you need explicitly have the “self” argument into a Python method? Python ‘self’ explained This is just for my own edification. I am learning python and have moved into OOP with python. Every single example of a method in a class that I have seen has "self" as the first argument. Is this true of all methods? If it is true, couldn't python have been written so that this argument was just understood and

问题 I would like to be able to tell when a method has been called for the first time. I primarily need this for when I am printing out to a delimited file, and if it is the first iteration, I would like to print a header before the actual information. This is what I normally do: def writeFile(number, count): if count == 1: print('number') print(str(count)) else: print(str(count)) count = 1 for i in range(10): writeFile(i, count) count += 1 This provides the following output: number 1 2 3 4 5 6 7

问题 The Android webview has 2 methods to load data public void loadData (String data, String mimeType, String encoding) Note that JavaScript's same origin policy means that script running in a page loaded using this method will be unable to access content loaded using any scheme other than 'data', including 'http(s)'. To avoid this restriction, use loadDataWithBaseURL() with an appropriate base URL. and public void loadDataWithBaseURL (String baseUrl, String data, String mimeType, String encoding

问题 The Android webview has 2 methods to load data public void loadData (String data, String mimeType, String encoding) Note that JavaScript's same origin policy means that script running in a page loaded using this method will be unable to access content loaded using any scheme other than 'data', including 'http(s)'. To avoid this restriction, use loadDataWithBaseURL() with an appropriate base URL. and public void loadDataWithBaseURL (String baseUrl, String data, String mimeType, String encoding

问题 This is a very basic question, and if what I am thinking of doing is complicated/involved, then I don't expect you to go into detail... I've read that this may involve structs or hash or some other scary procedure I've not gotten to yet. If so, I'm sure it'll get me soon. Working on learning classes, methods, and return values. I'd like to have my class/method return Current Hour and Minute. Simple enough, really. Is this constructed correctly, or properly? class MyClass { public int GetHour

问题 This is a very basic question, and if what I am thinking of doing is complicated/involved, then I don't expect you to go into detail... I've read that this may involve structs or hash or some other scary procedure I've not gotten to yet. If so, I'm sure it'll get me soon. Working on learning classes, methods, and return values. I'd like to have my class/method return Current Hour and Minute. Simple enough, really. Is this constructed correctly, or properly? class MyClass { public int GetHour

问题 I have a private static generic method I want to call using reflection, but really I want to 'bundle' it inside of another method. C# 7.0 supports local functions so this is definitely possible. You would say "why don't you just call it directly?" but I'm using it to get the ability to use an object and System.Type in a strongly typed manner so I need to call it dynamically. This code already works if I have it as it's own private static generic method. private static void HandleResponse

问题 I have a private static generic method I want to call using reflection, but really I want to 'bundle' it inside of another method. C# 7.0 supports local functions so this is definitely possible. You would say "why don't you just call it directly?" but I'm using it to get the ability to use an object and System.Type in a strongly typed manner so I need to call it dynamically. This code already works if I have it as it's own private static generic method. private static void HandleResponse