大约有 23,000 项符合查询结果（耗时：0.0356秒） [XML]
How to call a parent class function from derived class function?
...risk of stating the obvious: You call the function, if it's defined in the base class it's automatically available in the derived class (unless it's private).
If there is a function with the same signature in the derived class you can disambiguate it by adding the base class's name followed by two ...
What is the correct way to make a custom .NET Exception serializable?
...
Base implementation, without custom properties
SerializableExceptionWithoutCustomProperties.cs:
namespace SerializableExceptions
{
using System;
using System.Runtime.Serialization;
[Serializable]
// Importa...
What are some (concrete) use-cases for metaclasses?
... things up to date:
class _Interactify(type):
def __init__(cls, name, bases, d):
super(_Interactify, cls).__init__(name, bases, d)
for base in bases:
for attrname in dir(base):
if attrname in d: continue # If overridden, don't reset
at...
How to set ViewBag properties for all Views without using a base class for Controllers?
...iewBag in a global fashion by having all Controllers inherit from a common base controller.
8 Answers
...
GUI-based or Web-based JSON editor that works like property explorer [closed]
...nviewer.stack.hu/
mb21.github.io/JSONedit, built as an Angular directive
Based on JSON Schema
https://github.com/jdorn/json-editor
https://github.com/mozilla-services/react-jsonschema-form
https://github.com/json-schema-form/angular-schema-form
https://github.com/joshfire/jsonform
https://github...
Extract filename and extension in Bash
...
First, get file name without the path:
filename=$(basename -- "$fullfile")
extension="${filename##*.}"
filename="${filename%.*}"
Alternatively, you can focus on the last '/' of the path instead of the '.' which should work even if you have unpredictable file extensions:
f...
Regular cast vs. static_cast vs. dynamic_cast [duplicate]
... pointer if the object referred to doesn't contain the type casted to as a base class (when you cast to a reference, a bad_cast exception is thrown in that case).
if (JumpStm *j = dynamic_cast<JumpStm*>(&stm)) {
...
} else if (ExprStm *e = dynamic_cast<ExprStm*>(&stm)) {
......
Abstract functions in Swift Language
...cept of abstract in Swift (like Objective-C) but you can do this :
class BaseClass {
func abstractFunction() {
preconditionFailure("This method must be overridden")
}
}
class SubClass : BaseClass {
override func abstractFunction() {
// Override
}
}
...
Why does an overridden function in the derived class hide other overloads of the base class?
... drastic shift in overload resolution results.
For example, let's say the base class B has a member function foo that takes a parameter of type void *, and all calls to foo(NULL) are resolved to B::foo(void *). Let's say there's no name hiding and this B::foo(void *) is visible in many different cl...
Convert integer to binary in C#
...
Convert from any classic base to any base in C#
String number = "100";
int fromBase = 16;
int toBase = 10;
String result = Convert.ToString(Convert.ToInt32(number, fromBase), toBase);
// result == "256"
Supported bases are 2, 8, 10 and 16
...