nested

问题 i am trying to compile this very simple piece of code class myList { public: std::vector<std::string> vec; class Items { public: void Add(std::string str) { myList::vec.push_back(str); }; }items; }; int main() { myList newList; newList.items.Add("A"); } what can i do to make this work without creating more objects that needed or overcomplicating stuff... 回答1: Add a couple of constructors and a pointer to the parent class. #include <string> #include <vector> class myList { public: std::vector

问题 I am trying to find a way to compare two dictionaries without any library but the data is nested and keys are not ordered too.The data is dynamic in nature meaning the the keys in dictionary will change and nesting also. I am not able to parse the dictionary if the nesting is not fixed. Example data: source_data = { "name":"Kaleigh", "username":"Kaleigh60", "email":"Kaleigh6047@gmail.com", "address":{ "street":"MyahCourse","suite":"Apt.657","city":"Boyerberg","zipcode":"66413-8920", "geo":{

问题 I did web scraping from a login xml format website and turn it into a list already. Now I have difficulties to extract data from the nested list since it's very complicated. Here is a part of my z2 structure: dput(z2) structure(list(scheduleList = structure(list( schedule = structure(list( score = structure(list( class = structure(list(name = list("011c"), people = list("2"), teacher = structure(list(name = list("A")), .Names = "name", id = "D29")), .Names = c("name", "people", "teacher"), id

问题 I understand how to use Spring with the PropertyPlaceholderConfigurer to load a .properties file when we know what properties to expect, and use @Value to store those values into variables or some object. However, how do I have Spring load up a properties file with nested key,value pairs when the keys can vary? For example, lets say I had the following car.properties file: Chevy=Corvette:String,1234567890:long,sportsCar:String Honda=Odyssey:String,2345678910:long,minivan:String Ford=F350

问题 So I am looking for a dynamic way to crawl a website and grab links from each page. I decided to experiment with Beauitfulsoup. Two questions: How do I do this more dynamically then using nested while statements searching for links. I want to get all the links from this site. But I don't want to continue to put nested while loops. topLevelLinks = self.getAllUniqueLinks(baseUrl) listOfLinks = list(topLevelLinks) length = len(listOfLinks) count = 0 while(count < length): twoLevelLinks = self

问题 I am trying to overload the + operator to deal with nested vectors. I thought the function would call itself until the nested vectors resolve to basic types, but instead I get a huge list of errors when I compile it. My vector operations that I have defined work for basic types, but not a variable amount of nested vectors. The only operation that does work for nested vectors is the << operator. main.cpp #include <iostream> #include <vector> #include <algorithm> template<typename T1> std:

问题 I am redesigning the layout for a interface using python 2.6 and the standard Tkinter included with it. Trouble is that I am noticing some strange behavior, and I am new to Tkinter so this may just be something simple I am overlooking due to inexperience. Here is some example code of how I am nesting frames inside a master frame in order to get the desired layout: import Tkinter as tk root = tk.Tk() master = tk.Frame(root) frame = tk.Frame(master).grid(sticky = tk.W) item1 = "Label One" L1 =

问题 I am working on a script to get max lengths of each column, I'm trying to store lengths of max length in _c1...n vars. number of columns unknown. I was able to get length for each column, create variables to store each with set _c!i! = !n!, n is the length but in order to set the max length for a particular column I need to compare current with max and use something like !_c!!i!! which doesn't work, any ideas how to refer a variable which part of it's name coming from another variable? Thanks

问题 I am working on 2D rectangular packing. In order to minimize the length of the infinite sheet (Width is constant) by changing the order in which parts are placed. For example, we could place 11 parts in 11! ways. I could label those parts and save all possible permutations using perms function and run it one by one, but I need a large amount of memory even for 11 parts. I'd like to be able to do it for around 1000 parts. Luckily, I don't need every possible sequence. I would like to index

问题 I am a little confused in how to proceed with this scenario using ramda. Here is the JSON that I am working with. { "type" : "CartWsDTO", "Cartentries" : [ { "entryNumber" : 1, "flightGroup" : { "PAXDetails" : [ { "paxID" : "1", "paxPrice" : "770.82", "paxType" : "ADT" }, { "paxID" : "2", "paxPrice" : "770.82", "paxType" : "ADT" } ] } }, { "entryNumber" : 2, "flightGroup" : { "PAXDetails" : [ { "paxID" : "1", "paxName" : "Vinitha", "paxPrice" : "770.82", "paxSurname" : "Vinitha", "paxType" :