object

问题 I'm making a game in pygame and I have made an 'abstract' class that's sole job is to store the sprites for a given level (with the intent of having these level objects in a list to facilitate the player being moved from one level to another) Alright, so to the question. If I can do the equivalent of this in Python(code curtesy of Java): Object object = new Object (){ public void overriddenFunction(){ //new functionality }; }; Than when I build the levels in the game I would simply have to

问题 I'm making a game in pygame and I have made an 'abstract' class that's sole job is to store the sprites for a given level (with the intent of having these level objects in a list to facilitate the player being moved from one level to another) Alright, so to the question. If I can do the equivalent of this in Python(code curtesy of Java): Object object = new Object (){ public void overriddenFunction(){ //new functionality }; }; Than when I build the levels in the game I would simply have to

问题 This is the working code: var test = function () { console.log(test.data); }; test.data = 'hello'; test.set = function (data) { test.data = data; }; test.set('Test'); test(); This outputs Test to my javascript console. Now I was wondering, if there was a way to do it using something like this? var test = { this: function () { console.log(test.data); }, data: 'hello', set: function (data) { test.data = data; } }; 回答1: As I have written in my comment, you cannot make an object "callable". You

问题 This is the working code: var test = function () { console.log(test.data); }; test.data = 'hello'; test.set = function (data) { test.data = data; }; test.set('Test'); test(); This outputs Test to my javascript console. Now I was wondering, if there was a way to do it using something like this? var test = { this: function () { console.log(test.data); }, data: 'hello', set: function (data) { test.data = data; } }; 回答1: As I have written in my comment, you cannot make an object "callable". You

问题 In C++, should my method return an object or a pointer to an object? How to decide? What if it's an operator? How can I define? And one more thing - if the pointer turns to be a vector, how can I find out its size after returned? And if it's impossible, as I think it is, how should I proceed to correctly return an array without this limitation? 回答1: In C++, should my method return an object or a pointer to an object? How to decide? Since C++11 we have move semantics in C++ which means that it

问题 I've been reading the book Clean Code: A Handbook of Agile Software Craftsmanship and in chapter six pages 95-98 it clarifies about the differences between objects and data structures: Objects hide their data behind abstractions and expose functions that operate on that data. Data structures expose their data and have no meaningful functions. Object expose behavior and hide data. This makes it easy to add new kinds of objects without changing existing behaviors. It also makes it hard to add

问题 I have a functionality where I enable the user to edit the json object and then validate it in my code, so I have 2 json objects to compare and validate(the initial and the edited one) , I am pushing all the keys from json object into 2 different arrays and then comparing the first array to second and filtering out the missing keys. The code works for rest of the scenarios(if I remove keys which has an object) but fails if the json has a key which has an array of objects and also starts

问题 I have a functionality where I enable the user to edit the json object and then validate it in my code, so I have 2 json objects to compare and validate(the initial and the edited one) , I am pushing all the keys from json object into 2 different arrays and then comparing the first array to second and filtering out the missing keys. The code works for rest of the scenarios(if I remove keys which has an object) but fails if the json has a key which has an array of objects and also starts

问题 I have defined a simple class. The suprising thing is: I can assign attributes that haven't been defined in the class definition. How is that possible? How can I prevent this from happening? See here, what I mean, this is my simple class: class Dog: def __init__(self,name): self.name=name Of course I can now instanciate an object: dog = Dog('Fido') Printing Print(dog.name) yields 'Fido' . But now I just can assign to my object dog new attributes though I haven't included them in the class

问题 I have defined a simple class. The suprising thing is: I can assign attributes that haven't been defined in the class definition. How is that possible? How can I prevent this from happening? See here, what I mean, this is my simple class: class Dog: def __init__(self,name): self.name=name Of course I can now instanciate an object: dog = Dog('Fido') Printing Print(dog.name) yields 'Fido' . But now I just can assign to my object dog new attributes though I haven't included them in the class