nested

问题 Wrote this function in python that transposes a matrix: def transpose(m): height = len(m) width = len(m[0]) return [ [ m[i][j] for i in range(0, height) ] for j in range(0, width) ] In the process I realized I don't fully understand how single line nested for loops execute. Please help me understand by answering the following questions: What is the order in which this for loop executes? If I had a triple nested for loop, what order would it execute? What would be equal the equal unnested for

问题 I'm trying to get nested subgrids to work using jqGrid with local data. I've searched around quite a bit but haven't been able to find a solution. Here is a simplified sample of my code: var mainGridData = [ // main grid data { id: "m1", col1: "11", col2: "12" }, { id: "m2", col1: "21", col2: "22" }, { id: "m3", col1: "31", col2: "32" } ]; var firstSubgrid = { m1: [ // data for subgrid for the id=m1 { id: "s1a", c1: "aa", c2: "ab", c3: "ac" }, { id: "s1b", c1: "ba", c2: "bb", c3: "bc" }, { id

问题 Hi I am trying to access a parameter in the controller "ViewWorklogCrtl" while using ui-router and running into difficulty. Basically, my parent template contains: a(ui-sref="instance-ticket.worklog({id:{{ticket.testnum}}})") show and then further down the page: section(ui-view="top-section") Then in my app.js, containing client-side routing info in short I have: $stateProvider .state('instance-ticket', { url: '/ticket/:instanceID', templateUrl: 'partials/instance-ticket', controller:

问题 I have this array of objects, that I need to modify to make it easier the rendering. const items = [ { tab: 'Results', section: '2017', title: 'Full year Results', description: 'Something here', }, { tab: 'Results', section: '2017', title: 'Half year Results', description: 'Something here', }, { tab: 'Reports', section: 'Marketing', title: 'First Report', description: 'Something here', }, ... ]; and I'm trying to modify it, grouping them by specific keys. The idea is to have this output. As

问题 I have this nested list: l = [['40', '20', '10', '30'], ['20', '20', '20', '20', '20', '30', '20'], ['30', '20', '30', '50', '10', '30', '20', '20', '20'], ['100', '100'], ['100', '100', '100', '100', '100'], ['100', '100', '100', '100']] Now, what I want to do is convert each element in a list to float. My solution is this: newList = [] for x in l: for y in x: newList.append(float(y)) But can this be done using nested list comprehension, right? what I've done is: [float(y) for y in x for x

问题 I have this nested list: l = [['40', '20', '10', '30'], ['20', '20', '20', '20', '20', '30', '20'], ['30', '20', '30', '50', '10', '30', '20', '20', '20'], ['100', '100'], ['100', '100', '100', '100', '100'], ['100', '100', '100', '100']] Now, what I want to do is convert each element in a list to float. My solution is this: newList = [] for x in l: for y in x: newList.append(float(y)) But can this be done using nested list comprehension, right? what I've done is: [float(y) for y in x for x

问题 Has anybody been successful or can find an example of using nested grids in the WPF 3.5 SP1 toolkit Datagrid? Does anybody know if this is even supported? Thanks. 回答1: Yes, you can nest a datagrid inside another datagrid's rowtemplate. Remember in WPF you can put any control inside any container. 来源： https://stackoverflow.com/questions/1030047/nesting-wpf-3-5-sp1-toolkit-datagrid

问题 I have a Marshmallow schema where an objects use a key to refer to an object that is defined in a dictionary in another part of the structure. I want to have the key automatically resolved when deserializing the object. How can I achieve this effect in Marshmallow in an idiomatic manner? The workaround for now is to resolve all of the references manually, but this seems clunky, since the declarative nature of Marshmallow should be able to do it for us automatically. Note that Marshmallow

问题 How to parse this JSON using Newton Soft I tried but gives me null as my modal should have class 1, 2, 3 ... but that's dynamic .So getting confuse. Appreciate your help ! { "data": { "1": { "test": { "col1": "123", "col2": "name" } }, "2": { "test": { "col1": "345", "col2": "name2" } }, "3": { "test": { "col1": "456", "col2": "name3" } } } class root { data data{get; set;}; } class data { List<object> innerObject {get; set;} //not sure as labels are dynamic } class test { col1{get; set;}

问题 In the following example, I have an object class which defines a reference class. Both accept mutability as a template argument. In the case that 'obj' is 'Const', I want to disallow a reference of type 'Non_Const'. The example produces the ambiguous message, "An internal error has occurred in the compiler," in Visual C++ 2012. Should this compile? If not, why, and is there another way to accomplish the same thing? enum Mutability {Const, Non_Const}; template <typename T, Mutability U> class