class

问题 I need to read in lines from a given text file into a vector of a class of strings. I have this so far but I cannot get them into the vector. I am trying to create a while loop to read in each line of the text file input by the user. I've modified it from the last time, but all it does is read in one thing at a time, splitting Las and Vegas. I also need to push the information from my text file into my Flight vector. #include "sort.h" #include "flight.h" #include "std_lib_facilities_4.h"

问题 I have created the following Enum: from enum import Enum class Action(str, Enum): NEW_CUSTOMER = "new_customer" LOGIN = "login" BLOCK = "block" I have inherited from str , too, so that I can do things such as: action = "new_customer" ... if action == Action.NEW_CUSTOMER: ... I would now like to be able to check if a string is in this Enum, such as: if "new_customer" in Action: .... I have tried adding the following method to the class: def __contains__(self, item): return item in [i for i in

问题 I have created the following Enum: from enum import Enum class Action(str, Enum): NEW_CUSTOMER = "new_customer" LOGIN = "login" BLOCK = "block" I have inherited from str , too, so that I can do things such as: action = "new_customer" ... if action == Action.NEW_CUSTOMER: ... I would now like to be able to check if a string is in this Enum, such as: if "new_customer" in Action: .... I have tried adding the following method to the class: def __contains__(self, item): return item in [i for i in

问题 I have created the following Enum: from enum import Enum class Action(str, Enum): NEW_CUSTOMER = "new_customer" LOGIN = "login" BLOCK = "block" I have inherited from str , too, so that I can do things such as: action = "new_customer" ... if action == Action.NEW_CUSTOMER: ... I would now like to be able to check if a string is in this Enum, such as: if "new_customer" in Action: .... I have tried adding the following method to the class: def __contains__(self, item): return item in [i for i in

问题 Take the following code: using System.Collections; using System.Collections.Generic; using UnityEngine; public class MyClass { public int myNumber; } public class Test : MonoBehaviour { MyClass class1 = new MyClass(); MyClass class2 = new MyClass(); void Start() { class1.myNumber = 1; class2 = class1; class2.myNumber = 2; Debug.Log(class1.myNumber); //output: 2 (I'd want it to output 1!!!) } } Now, if I understood correctly, in C# classes are a reference type and not a value type, so this

问题 I've been trying to find a way to sample random vectors from a multivariate normal distribution in C++, having both the mean vector and the covariance matrix, much like Matlab's mvnrnd function works. I've found relevant code for a class that implements this on this page, but I've been having some problems compiling it. I've created a header file that is being included on my main.cpp, and I'm trying to create an object of the EigenMultivariateNormal class: MatrixXd MN(10,1); MatrixXd CVM(10

问题 Is it possible to declare that a class has certain functions without implementing them? I need this because I create a class that is then passed to a js framework which adds a couple of functions. I wanna be able to call those functions aswell without reimplementing them, redirecting or casting or whatsoever. Example: //example class class AppComponent { constructor() {} } //create class var comp: AppComponent = new AppComponent(); //hand over to framework fw.define("Component", comp); //now

问题 Is it possible to declare that a class has certain functions without implementing them? I need this because I create a class that is then passed to a js framework which adds a couple of functions. I wanna be able to call those functions aswell without reimplementing them, redirecting or casting or whatsoever. Example: //example class class AppComponent { constructor() {} } //create class var comp: AppComponent = new AppComponent(); //hand over to framework fw.define("Component", comp); //now

问题 Is it possible to declare that a class has certain functions without implementing them? I need this because I create a class that is then passed to a js framework which adds a couple of functions. I wanna be able to call those functions aswell without reimplementing them, redirecting or casting or whatsoever. Example: //example class class AppComponent { constructor() {} } //create class var comp: AppComponent = new AppComponent(); //hand over to framework fw.define("Component", comp); //now

问题 Sec. 3.4.3/3 said: In a declaration in which the declarator-id is a qualified-id, names used before the qualified-id being declared are looked up in the defining namespace scope; names following the qualified-id are looked up in the scope of the member’s class or namespace. There is a code example from 3.4.3/3 N3797: class X { }; class C { class X { }; static const int number = 50; static X arr[number]; }; X C::arr[number];// ill-formed: // equivalent to: ::X C::arr[__C::number__]; // not to: