Recent questions tagged Class

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class - how to resolve this error "com.android.internal.telephony cannot be resolved to a type" in android

i am creating simple call filter application which restrict unwanted calls. i use following code to restrict call but i ... } Please help me . See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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575 views

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class - How to declare a static attribute in Python?

How can I declare a static attribute in Python? Here is written how I can declare a method: Static methods in Python? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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class - Java: avoid checking for null in nested classes (Deep Null checking)

Imagine I have a class Family. It contains a List of Person. Each (class) Person contains a (class) Address. ... been able to find a solution. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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class - Python using methods from other classes

If I have two classes, and one of them has a function that I want to use in my other class, what do I ... don't have to rewrite my function? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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528 views

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class - Purpose of PHP constructors

I am working with classes and object class structure, but not at a complex level - just classes and functions, ... an example, please. Regards See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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633 views

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class - passing object by reference in C++

The usual way to pass a variable by reference in C++(also C) is as follows: void _someFunction(dataType *name) ... address as in case of arrays? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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658 views

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class - How should I declare default values for instance variables in Python?

Should I give my class members default values like this: class Foo: num = 1 or like this? class Foo: def ... what the 'standard' way is. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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723 views

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class - Fortran polymorphism in pointers

I am trying to use pointers to create links between objects. Using Fortran and here is the code piece: module ... am i doing something wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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655 views

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class - Python Euler Method implementation in Two Body Problem not working

I am currently trying to get a two body problem to work, that I can then upgrade to more planets, but it is ... the arrays but I am not sure. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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871 views

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class - member variable string gets treated as Tuple in Python

I am currently learning Python with the help of CodeAcademy. My problem may be related to their web application, but my ... in my code on this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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509 views

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class - How do I use LINQ to obtain a unique list of properties from a list of objects?

I'm trying to use LINQ to return a list of ids given a list of objects where the id is a property. I' ... adding the unique values into a list. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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691 views

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class << self vs self.method with Ruby: what's better?

This Ruby Style Guide tells that is better using self.method_name instead of class method_name. But Why? class ... Are there performance issues? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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589 views

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class - php static function

I have a question regarding static function in php. let's assume that I have a class class test { public ... special about a static function? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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708 views

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class - What does new self(); mean in PHP?

I've never seen code like this: public static function getInstance() { if ( ! isset(self::$_instance)) { self ... ,which class does it point to? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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790 views

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class - Importing CSV data into C# classes

I know how to read and display a line of a .csv file. Now I would like to parse that file, store its ... } } Help would be much appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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544 views

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class - PHP __PHP_Incomplete_Class Object with my $_SESSION data

I've got a site setup that, on page load, turns all user submitted strings into SafeString objects. For those ... the problem :/ Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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524 views

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class name and method name dropdown list is missing (visual studio setting)

Does anyone know how to get my class name and method name dropdown lists again? It's the dropdown lists that are ... btw. I shouldn't have to. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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679 views

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class - c# - How to iterate through classes fields and set properties

I am not sure if this is possible but I want to iterate through a class and set a field member property without ... 0) ? true : false; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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597 views

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class - Assignment of objects in VB6

I am attempting to create two identical objects in VB6 by assignment statements; something like this... Dim ... mysecondobj = myfirstobj.Copy See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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721 views

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class - Dynamic static method call in PHP?

Please could someone experienced in PHP help out with the following. Somewhere in my code, I have a call to a ... any sense, anyone? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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504 views

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class - How do you determine the size of an object in C++?

For example, say I have a class Temp: class Temp { public: int function1(int foo) { return 1; } void ... bytes for function1 | etc | ) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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583 views

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class - Difference between 'cls' and 'self' in Python classes?

Why is cls sometimes used instead of self as an argument in Python classes? For example: class Person: def __init__( ... fullname.split(' ', 1) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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835 views

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class - Python attributeError on __del__

I have a python class object and I want to assign the value of one class variable class Groupclass(Workerclass): """ ... me what me I did wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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594 views

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class - Comparable classes in Python 3

What is the standard way of making a class comparable in Python 3? (For example, by id.) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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622 views

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class - Getting container/parent object from within python

In Python, is it possible to get the object, say Foo, that contains another object, Bar, from within Bar itself ... () Is this possible? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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619 views

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class - Java generics - Make Generic to extends 2 interfaces

How do you make this work: public class Frankenstein<T extends IHuman, IMonster>{ } Without making public ... IDisposable> as an Error. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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610 views

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class - Pros and cons of using nested C++ classes and enumerations?

What are the pros and cons of using nested public C++ classes and enumerations? For example, suppose you have a ... which do you prefer and why? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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657 views

1 answer

class - jQuery: selector (classname with space)

I'm trying to get a div which has "panel current" as classname. The problem is the space - how can I select it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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