instance

问题 I'm an R user looking to get more comfortable with Python. I wrote a kind of mini-API that makes it easy to compare different statistical models fitted to the same data, in such a way that I can pre-set all the model hyperparameters and then iterate over the different models in order to fit them. This is the essence of what I want to do: Build a wrapper class Classifier around a Scikit-learn Pipeline, in turn built on one of Scikit-learn's built-in estimators, e.g. RandomForestClassifier

问题 I'm running into some type of a scope issue that's preventing instance variables from being properly initialized by helpers called from the view. #sample_controller.rb class SampleController < ApplicationController def test end end #application_controller.rb helper_method :display def display if not defined? @display return @display = "a" else return @display += "a" end end #test.html.erb <%= display %> <%= display %> <%= @display %> <%= @display.reverse %> When sample/test is displayed, it

问题 In C/C++, I want to see if a PyObject is an instance. Unfortunately, the PyInstance_Check macro doesn't work with new-style classes. So, according to forums posts that I read, PyObject_IsInstance could solve the problem. However, all the examples that I have found are demonstrating comparisons with built-in types, like ints and strings. I want to know how I can construct a PyObject that represents a class of a type, so I can pass it to the second argument of PyObject_IsInstance . Can you help

问题 There can be many activities in application and the last launched activity stay on top of stack and on pressing back it finish the current activity.I have a sequence of Activity and here is the flow .. if we have A,B, C(1) ,D, C(2) ... Activity C(1) and C(2) are two different instance of Activity C launched while navigating the application .So what is requisite is to clear all the instance of activity C and the result should be when I finish C(2) I should have left with these stack A,B,D .

问题 Looking for a way to programatically, or otherwise, add a new instance of SQL 2005 Express Edition to a system that already has an instance installed. Traditionally, you run Micrsoft's installer like I am in the command line below and it does the trick. Executing the command in my installer is not the issue, it's more a matter of dragging around the 40 MBs of MS-SQL installer that I don't need if they have SQL Express already installed. This is what my installer currently executes: SQLEXPR32

问题 There can be many activities in application and the last launched activity stay on top of stack and on pressing back it finish the current activity.I have a sequence of Activity and here is the flow .. if we have A,B, C(1) ,D, C(2) ... Activity C(1) and C(2) are two different instance of Activity C launched while navigating the application .So what is requisite is to clear all the instance of activity C and the result should be when I finish C(2) I should have left with these stack A,B,D .

问题 Looking for a way to programatically, or otherwise, add a new instance of SQL 2005 Express Edition to a system that already has an instance installed. Traditionally, you run Micrsoft's installer like I am in the command line below and it does the trick. Executing the command in my installer is not the issue, it's more a matter of dragging around the 40 MBs of MS-SQL installer that I don't need if they have SQL Express already installed. This is what my installer currently executes: SQLEXPR32

问题 I am creating a Python application that includes socket communication with a server. I would like to have a module which can be used throughout my entire application (several other modules). Currently my module look like this: class SocketCommunication: def __init__(self): self.socketIO = SocketIO(settings.ADDRESS, settings.PORT, Namespace) def emit(self, message, data): json_data = json.dumps(data.__dict__) self.socketIO.emit(message, json_data) class Namespace(BaseNamespace): def on_connect

问题 I've to get all the instances of a class C and subclasses (direct or indirect) of C, in SPARQL. I can get all the direct subclasses of C in this way: SELECT ?entity WHERE { ?subclass rdfs:subClassOf :C . ?entity rdf:type ?subclass . } But I can't get the instances of an indirect subclass and neither any instance of C. As I know (I've pre-calculated them) all the subclasses (direct and indirect of C), and I can build a dynamic query, is it possible build a query like the following one? SELECT

问题 I'm learning to code and I have a question about some sample code I found: var Comment = new Schema({ user:userStub, time:Date, content: {type:String, required: true, trim:true} }); From what I learned about OOP, I thought the Comment object instance of Schema would be built like this: function Schema (user, time, content){ this.user = user; this.time = time; this.content = content; }; var Comment = new Schema (userStub, time, content); Anyone know the advantage of building the Comment