nested

问题 The nested dictionary tree is of the form, categories = [{ 'name': 'Cat1', 'children': [{ 'name': 'SubCat1', 'children': [{ 'name': 'SubSubCat1', 'children': [] }] }] }, { 'name': 'Cat2', 'children': [] }] The recursive function should return the path from root to a specific leaf. Lets say, function(categories, 'SubCat1') should return a list containing ['Cat1', 'SubCat1'] . Likewise for function(categories, 'Cat2') should return the ['Cat2'] . Progress made so far def recurse_category

问题 I cannot push to an array. I have a segment(id, time) that can have one or several people (role, infos). The field are generated dynamically. On load the page shows the fields (see image below). When try to add a segment I get error : ERROR TypeError: Cannot find control with path: 'segmentRows3 -> 1 -> segmentId3' Here is code from the .ts file: addSegment() { let segmentRows3 = this.mySummaryForm.get('segmentRows3') as FormArray; segmentRows3.push(this.fb.array([ this.fb.group({

问题 How to select join multiple tables and get it in a nested array easily? For Example Table 1 -School: SchoolID, SchoolName,PrincipalID Talbe 2 - Principal: PrincipalID,PrincipalName I want to get a nested array in PHP like "School": [ { "SchoolID": "7", "SchoolName": "New", "Principal": { "PrincipalID":"1", "PrincipalName":"James" } } The problem is, how to get the nested array use a automatic way instead of specifying each field and add it into a array manually? without even kowning the

问题 (defun combinations (&rest lists) (if (car lists) (mapcan (lambda (inner-val)(mapcar (lambda (outer-val) (cons outer-val inner-val)) (car lists))) (apply #'combinations (cdr lists))) (list nil))) The combinations function creates all combinations of the names, charms and position for each baseball player. (defun main() (setq m-list (combinations '(Blacket Bluet Browning Greenfield Whitehall)'(four-lear-clover penny rabbit-foot ribbon silver-dollar) '(center- field first-base right-field short

问题 I am building an app in android using XmlPullParser. How can I get the content from an html formatted like this? <div class="content"> "Some text is here." <br> "some more text "<a class="link" href="adress">continues here</a> <br> </div> I want to parse all the content like this: "Some text is here. some more text continues here" "continues here" part should also be hyperlinked. ADDITION after some comments: HTML is first put into Yahoo YQL and YQL generates an XML. I use the generated XML

问题 Having a list A with an arbitrary degree of nesting, and a list B with a nesting structure equivalent to that of A ( or deeper ), how can we create a list of tuples for all corresponding elements? For example: A = ['a', ['b', ['c', 'd']], 'e'] B = [1, [2, [3, [4, 5]]], 6] >>> [('a', 1), ('b', 2), ('c', 3), ('d', [4, 5]), ('e', 6)] 回答1: Basically, all you need to do is, iterate a and b simultaneously and return the values of a and b , if the current element of a is not a list. Since your

问题 I've been trying to make this thing work for a couple of hours but I can't get it to work : if [ "$P" = "SFTP" -a "$PORT" != "22" ] || [ "$P" = "FTPS" && [ "$PORT" != "990" -a "$PORT" != "21" ] ] ; then Can someone help me ? I know that multiple conditions can be written like this : if [ "$P" = "SFTP" ] && [ "$PORT" != "22" ]; then but how can I imbricate theses conditions like in my first example? 回答1: You can't nest expressions in single brackets. It should be written like this: if [ "$P" =

问题 MASTER PAGE STRUCTURE TOP MASTER PAGE MASTER "TopMaster.ErrorMsg(ErrMsg) Here throws NO error" PAGE "TopMaster.ErrorMsg(ErrMsg) Here throws error" I am unable to gain access to the top level class from the base page. TOP MASTER ASPX <asp:Literal ID="litMsg" runat="Server"/> PAGE.VB Partial Public Class BasePage Inherits System.Web.UI.Page Public Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load TopMaster.ErrorMsg(ErrMsg) "Error BC30451: TopMaster is not declared it

问题 I'm new to CodeIgniter and I hope that my question will have a simple answer. I have a website with a couple of menu items (menuA,menuB and menuC). I have modeled it with one main controller, index(), menuA(), menuB() and menuC() in the controller. The called function sets a session value currentMenu and includes header, X, footer. Where X depends on the function called. The header then high lights the choosen menu. Within menuC (Account settings in my webapp) I would like to have a different

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 7 years ago . I have found that it is possible to nest another property within an object literal property. Here is an example of this: var rectangle = { upperLeft : {