nested

问题 Is there a way to get the amount of money paid per Sport's category ? It can't be restricted only to "John," but in all collection documents. Expected query return for data provided: { {"Fight": [100,95] }, {"Running": [50] } } Example of data: {"_id":"5z621578b0ce483b9866fb1f", "Name":"John", "Sports":[ {"Category":"Fight", "Billing":[ {"Month":"Jan", "Status":"Paid", "Price":100}, {"Month":"Feb", "Status":"Not Paid", "Price":125}, {"Month":"Mar", "Status":"Paid", "Price":95} ] }, {"Category

问题 I need some help in Nested classes. This has sprung from a question I asked here Essentially I have a class 'myPlugin'. This class is the bulk of my program and includes the 'processReplacing' function. Within processReplacing I need to filter the signal using DSP, currently I am using 11 filters and that has led to 11 filters (and all buffers) being hard coded into processReplacing. However, now I have decided to create a filter class, so I can create a new instance for each filter, call as

问题 I am trying to achieve nesting in DataTable, i.e. a column of DataTable is a DataTable. My code is something like this: DataTable table = new DataTable(); DataColumn column = new DataColumn("Qualifications", System.Type.GetType("System.Data.DataTable")); table.Columns.Add(column); I am getting a runtime error message at line # 2, that says "Column requires a valid DataType". What could be the reason? 回答1: I would say that what you are attempting to achieve is not possible using the way you

问题 A - I have a list containing igraph graph objects: goodgg [[1]] IGRAPH UN-- 3 3 -- + attr: name (v/c), color (v/c), value (e/n), sourceID (e/n), targetID (e/n) + edges (vertex names): [1] 89315--89316 89315--89928 89316--89928 [[2]] IGRAPH UN-- 3 2 -- + attr: name (v/c), color (v/c), value (e/n), sourceID (e/n), targetID (e/n) + edges (vertex names): [1] 106277--106278 106278--106279 I can combine these into a single object using [union][1] : combine = graph.union(goodgg[[1]], goodgg[[2]],

问题 I got a lot of less files that are imported into one main less file. That main file has some different variables containing hex-color. e.g: @black: #333; @green: #007f4b; ... @import "layout"; @import "html"; ... Is it possbile to do some thing with this base? e.g: @black: #333; @green: #007f4b; @import: "layout"; @import: "html"; .fanshop { @black: #111; @green: green; @import: "layout"; @import: "html"; } The result should look like: .headline { background-color: #333; } .fanshop .headline

问题 In this code I am trying to create a dictionary containing the one letter amino-acid code as keys. For each key, there is a sub-dictionary which is the same as the first one, except that this sub-dictionary key's value should be the number of occurrences of firstkey/subkey which is indicated in the dictionary ref2 . For some reason I don't know yet, my code is giving the wrong values. AA = ['G', 'A', 'L', 'M', 'F', 'W', 'K', 'Q', 'E', 'S', 'P', 'V', 'I', 'C', 'Y', 'H', 'R', 'N', 'D', 'T'] d =

问题 Before asking this, I have read this question , which is similar to mine. Here I will provide my program in detail. #define N 70000 #define M 1000 class ObjBox {public: int oid; float x; float y; float ts}; class Bucket {public: int bid; int nxt; ObjBox *arr_obj; int nO;} int main() { Bucket *arr_bkt; cudaMallocManaged(&arr_bkt, N * sizeof(Bucket)); for (int i = 0; i < N; i++) { arr_bkt[i].bid = i; arr_bkt[i].nxt = -1; arr_bkt[i].nO = 0; cudaError_t r = cudaMallocManaged(&(arr_bkt[i].arr_obj)

问题 I have a nested DataList in MasterPage. I'm trying to Findcontrol, but it returns null for DataList2. What I tried so far : DataList DataList1 = Page.Master.FindControl("DataListMain") as DataList; DataList DataList2 = DataList1.FindControl("DataListNested") as DataList; How can I fix this? 回答1: DataList has items. So you need to locate the nested DataList by index. DataList dl = ((DataList)Master.FindControl("DataListMain")).Items[i].FindControl("DataListNested") as DataList; Note however

问题 I'm new here, and relatively new to stored procedures, so please bear with me! I've checked related questions on here and can't find anything that works in this instance. I am trying to build a stored procedure (MS SQL Server 2005) that takes a number of passed in values and in effect dynamically builds up the SQL as you would with inline SQL. This is where I've come unstuck. We have (somewhat simplified for clarity): @searchf1 varchar(100), -- search filter 1 @searchr1 varchar(100), --

问题 I have some data that end user wants in a CSV file. Each entry has a parent node and zero or more child nodes. For example, a parent node might contain: Name, Id, Date While a child node might contain: Name, ChildId So what I am searching for is a standard to represent multi-level data in CSV. In XML, I can easily create sub nodes. What is the best way to do this in CSV? I want to create a script to extract this data without any confusion about what is parent data and what is child data. In