dynamic

问题 When creating result objects within a class, is it possible to use __slots__ in this example? I thought I could get it to work by passing '__slots__' into the dictionary for the third argument to type : class GeocodeResult(object): """class to handle Reverse Geocode Result""" __slots__ = ['geometry', 'response', 'spatialReference', 'candidates', 'locations', 'address', 'type', 'results'] def __init__(self, res_dict, geo_type): RequestError(res_dict) self.response = res_dict self.type = 'esri_

问题 In an SSRS Report ,I have a table which has 14 columns, 1st column is 7am and the last column is 7pm. I have 100 records with conference names and the timings, ex: international conference 9am to 5pm national conference 8 am to 11 am so the problem is these column cells must merge based on the timings and display as one textbox with center aligning the text ex: national conference the columns from 8 to 11 am are to be merged and the time 8 to 11am must display in these merged cells with

问题 After the previous question "What are the important rules in Object Model Design", now I want to ask this: Is there any way to have dynamic properties for class instances? Suppose that we have this schematic object model: So, each object could have lots of properties due to the set of implemented Interfaces, and then become relatively heavy object. Creating all the possible -and of course reasonable- object can be a way for solving this problem (i.e. Pipe_Designed v.s. Pipe_Designed

问题 This is a follow up to a previous question: Dynamically build select statement in Oracle 12c I am trying to build a select statement dynamically but having a problem building the column alias names. The column alias name must be retrieved from MAIN_TABLE. Please refer to the code inside <> below: declare upper_level number; t_sql varchar2(1000); t_sql_val varchar2(500); l_sql varchar2(1000); begin --upper_level will always be given select 3 into upper_level from dual; --build the fixed string

问题 What is more preferable way to dynamically call some object's method: method = getattr(object, name) method(*args, **kw) Or import operator method = operator.methodcaller(name) method(object, *args, **kw) 来源： https://stackoverflow.com/questions/7821423/preferable-way-to-dynamically-call-some-objects-method

问题 Can we dynamically allocate 2D array without using any for loop or while loops? i there any direct command or function in c c++? 回答1: Without using a loop you will have one restriction in ISO c++ i.e. size of one dimension has to be determined at compile time. Then this allocation can be done in a single statement as follows: #define COLUMN_SIZE 10 // this has to be determined at compile time int main() { int (* arr)[COLUMN_SIZE]; int rows = 20; // this is dynamic and can be input from user

问题 EDIT AGAIN ... I'm just a dummy and figured it out! EDIT: So, it looks like if I highlight everything in the target select box and click "Add selected", it submits... How do I correct that behavior in the code below so that you don't have to click the "Add selected" button to get it to work? I have a form that includes three select boxes. The first one is categories, and selecting a category from it will populate the variables multi-select box with values specific to the selected category.

问题 I have a problem at work. I am building a Shiny app and trying to subset data based on the value of three selection boxes. My data has three variables, Commissioner, Neighbourhood and Practice. What I need is that no matter which box the user chooses first to filter the data on, the other two update to only show relevant choices. The default on loading is to show all choices in all boxes. I've made a start but getting no where fast. The code below shows all the choices in Commissioner on

问题 Fsolve in Scipy seems to be the right candidate for this, I just need help passing equations dynamically. I appreciate any thoughts in advance. By dynamic I mean number of equations differ from one run to another for example one situation i have : alpha*x + (1-alpha)*x*y - y = 0 beta*x + (1- beta)*x*z - z = 0 A*x + B*y + C*z = D and another situation i have: alpha*x + (1-alpha)*x*y - y = 0 beta*x + (1- beta)*x*z - z = 0 gama*x + (1 -gama)*x*w - w =0 A*x + B*y + C*z + D*w = E alpha , beta , A

问题 I'm working on this problem and I got the answers : Statically: 20, 16 Dynamically: 20, 100 is that correct? Consider the program below (in a Pascal like language). What is the output of the language is statically scoped? What is the output if the language is dynamically scoped? Program main; x: integer; procedure f1(z: integer) begin return z * x; end procedure f2(z: integer) int x; begin x = 2; return f1(z) * x; end begin /* main program */ x = 5; print f1(4); print f2(4); end 回答1: Why not