nested

问题 I have a relatively large hash where the values for all keys within are array of hashes (see below for sample layout). I have spent the last 4.5 hours attempting to write out HTML for my Rails application and I am seriously about to cry as I've gone round in circles with nothing really to show for it! Any help is greatly appreciated and thank you in advance for your time! Specific Problems Encountered Chapters/verses appear for books that they do not align to. I'm also not able to de

问题 My function AddItemToClient doesnt seem to work I'm not sure if its because of find function or because of AddItemToClient function but the output is strange. When I try to add item to another client than first one, it doesnt work but works propely only to first client but aswell adds to every existing client same item could somebody explain why? #include <stdlib.h> #include <time.h> #include <string.h> #include <stdio.h> struct date { int day; int month; int year; struct date* next; };

问题 I have a Posts model, which has many posts in many languages . It's a bit non-standard, but to illustrate: class Post < ActiveRecord::Base has_one :eng_post, :dependent => :destroy # <-- HAS_ONE! accepts_nested_attributes_for :eng_post, :allow_destroy => true end I.e. a Post has one EngPost. Whereas EngPost is defined in the model as: class EngPost < ActiveRecord::Base belongs_to :post has_many :eng_comments, :dependent => :destroy accepts_nested_attributes_for :eng_comments, :allow_destroy =

问题 Here is an example (see also https://play.golang.org/p/or7z4Xc8tN): package main import ( "encoding/json" "fmt" ) type A struct { X string Y int } type B struct { A Y string } func main() { data := []byte(`{"X": "me", "Y": "hi"}`) b := &B{} json.Unmarshal(data, b) fmt.Println(b) fmt.Println(b.A) b = &B{} data = []byte(`{"X": "me", "Y": 123}`) json.Unmarshal(data, b) fmt.Println(b) fmt.Println(b.A) } Which outputs: &{{me 0} hi} {me 0} &{{me 0} } {me 0} Is there a way to polymorphically

问题 When I use accepts_nested_attributes_for the corresponding fields no longer show in my view. class Survey < ActiveRecord::Base has_many :questions accepts_nested_attributes_for :questions end class Question < ActiveRecord::Base belongs_to :survey end Then in my view: <%= form_for @survey do |f| %> <%= f.fields_for :questions do |question_fields| %> <%= question_fields.text_area :text %> <% end %> <% end %> If I remove accepts_nested_attributes_for then the text_area shows, but if I keep it..

问题 I have a project that needs to read data, then write in more than 23 CSV files in parallel depending on each line. For example, if the line is about temperature, we should write to temperature.csv, if about humidity, >>to humid.CSV , etc. I tried the following: with open('Results\\GHCN_Daily\\MetLocations.csv','wb+') as locations, \ open('Results\\GHCN_Daily\\Tmax.csv','wb+')as tmax_d, \ open('Results\\GHCN_Daily\\Tmin.csv','wb+')as tmin_d, \ open('Results\\GHCN_Daily\\Snow.csv', 'wb+')as

问题 I would like to store some multidimensional/nested data in a pandas dataframe or panel such that I would like to be able to return for example: All the times for Runner A, Race A All the times(and names) for Race A for a certain year say 2015 Split 2 Time for Race A 2015 for all runners Example data would look something like this, note that not all runners will have data for all years or all races. I have a fair amount of data in the Runner Profile which I'd prefer not to store on every line.

问题 If we have several books,each books contains several chapters and each chapter contains several pages. In an App, when user navigate to "/home" list all the books,clicking a book(eg:book_1) will directly "linkTo" "/book_1/chapter_1/page_1" show the content of "chapter_1/page_1" within the selected book. I am now trying to use the "redirect" hook,but I am confused with these: 1,How to sent muti params to a redirect hook; 2,How to update the URL correctly after redirecting? 3,What is the "Ember

问题 Using AutoMapper: When mapping nested collections, I expect any unmapped properties to have their original values retained. Instead, they are being set to null. Example: I have these four classes (note that Test2Child has the Name property, while Test1Child does not): public class Test1 { public List<Test1Child> Children { get; set; } } public class Test2 { public List<Test2Child> Children { get; set; } } public class Test1Child { public int Value { get; set; } } public class Test2Child {

问题 Ok, so I have to find the biggest "free square" in a grid where some spots are filled, for example, there's this grid: ###--- ###--- ###--- ---### ---### ---### Where "-" is a filled spot and "#" is a free zone. This is done by filling a nested list: [[###---],[###---],...,[---###]] The inner lists are the vertical lines on the grid. So this grid could be filled in any way, and I'm supposed to find a way to 'calculate' the biggest possible square that can still be filled. In the above example