nested

问题 I have the following piece of function definition (test code): function [X,Y,Z] = test(x,y,z) syms a b c; a = b + c; % This is where it gets wrong X=x; Y=y; Z=z; keyboard % nested functions function y = fun1(t,x) y=t+x; end function res = bvpbc(y0,yT) res= y0+yT; end end Basically, I have some nested functions within the test function, where I declared some symbolic variables a , b and c . However, when I run the function by typing test(1,1,1) there is always this error message: Error using

问题 I want to use GIT as a Backup solution. I have a windows shared network in my Company and a Centos Server. Each user have a unique shared folder, where is located all files of user. We have 2 developers, they can have a git repo(s). How Can I make the entire folder of user a GIT repo, a perform usual git operations, commit, push, etc, without import if subfolders have git repos? Note: Submodules is not a solution, I don't know what repositories is under the main folder of user. 回答1: There are

问题 I've tried searching for existing answers, but I could not find them. I'd like to access an ArrayList from an object within an ArrayList, so: Basically two classes: Glossary and Word. Glossary contains a list with Word objects, the class Word contains a list with more Word objects (related words) <table> <span th:each="word : ${glossary.words}"> <td> <tr th:each="relatedWord: ${word.relatedWords}"> <p th:text="${relatedWord.getName()}"></p> </tr> <td> </span> </table> Unfortunately this does

问题 I have a database that models a foldering relationship to n levels of nesting. For any given folder, I want to generate a list of all child folders. Assuming I have a function called getChildFolders() , what is the most efficient way to call this kind of recursive loop? The following code works for 4 levels of nesting, but I'd like more flexibility in either specifying the depth of recursion, or in intelligently stopping the loop when there are no more children to follow. folder_ids = []

问题 According to the accepted answer in pyspark collect_set or collect_list with groupby, when you do a collect_list on a certain column, the null values in this column are removed. I have checked and this is true. But in my case, I need to keep the null columns -- How can I achieve this? I did not find any info on this kind of a variant of collect_list function. Background context to explain why I want nulls: I have a dataframe df as below: cId | eId | amount | city 1 | 2 | 20.0 | Paris 1 | 2 |

问题 I use a NavigationDrawer pattern that is implemented in my hostactivity MenuActivity . My navigation has 3 items: Item 1, Item 2, Item 3. Each itemis bonded to a fragment. When I click on Item 1, I displayed a fragment A that implements a ViewPager with several fragments (nested fragments). In my nested fragments, I inflate a menu with the following method (It works fine !) : @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.my_menu, menu);

问题 I have a User entity that has a Current Location field (city and country). To hold this info I created an entity called Location which has_many Users. I'm not entirely sure if I should put in the User model "has_one" or "belongs_to", but for what I read if I wanted it to have the foreign key of the location I should put "belongs_to". I also want to be able to edit the user's Current Location when editing the User. so I am using nested attributes. But when I edit the user I end up adding a new

问题 I'm struggling to find a way to map some JSON into RestKit. This is an example of what I'm looking at: "results":{ "Test1":[ { "id":1, "name":"Test 1 here.", "language":"English", "type: "Test1" } ], "Test2":[ { "id":3, "name":"Another test 2", "language":"English", "type":"Test2" }, { "id":8, "name":"More test 2", "language":"English", "type":"Test2" }, { "id":49, "name":"foo", "language":"English", "type":"Test2" } ] } Ideally, the JSON wouldn't include the extra redundant layer of "type"

问题 This question already has an answer here : C++ Forward declaring class scoped enumeration (1 answer) Closed 2 years ago . I know that in C++11 it's possible to forward declare an enum type (if storage type is provided) e.g. enum E : short; void foo(E e); .... enum E : short { VALUE_1, VALUE_2, .... } But I would like to forward declare an enum defined within a class e.g. enum Foo::E : short; void foo(E e); .... class Foo { enum E : short { VALUE_1, VALUE_2, .... } } Is something like this

问题 i have to implement json data in my application. but i can't get it how to fetch data from server. i am using ION library. { "search": [{ "id": "5454003", "description": "Larger Than Life", "url": "http://audiojungle.net/item/larger-than-life/5454003", "type": "item", "sales": "1469", "rating": "5", "item_info": { "id": "5454003", "item": "Larger Than Life", "url": "http://audiojungle.net/item/larger-than-life/5454003", "user": "pinkzebra", "thumbnail": "https://0.s3.envato.com/files/67162834