class

问题 program: public class SortedSet1 { public static void main(String[] args) { List ac= new ArrayList(); c.add(ac); ac.add(0,"hai"); ac.add(1,"hw"); ac.add(2,"ai"); ac.add(3,"hi"); ac.add("hai"); Collections.sort(ac); Iterator it=ac.iterator(); k=0; while(it.hasNext()) { System.out.println(""+ac.get(k)); k++; } } } output: ai hai hi hw hai how it execute 5 times?? while come to hai no next element present so condition false. But how it executed. 回答1: Your loop above iterates through the list

问题 i was reading a book about python class the main problem that i found that in an example in part of __str__ that he use a strange thing that he do __class__.__name__ the full code is : def __str__(self): return '{} {},HP:{},xp:{}'.format(self.col.title(),self.__class__.__name__,self.points,self.exp) u can use self.class and it work the Writer comment for this part i mean __class__.__name__ he say . __name__ that is the string version of the class name can someone explain to my what Means 回答1:

问题 i was reading a book about python class the main problem that i found that in an example in part of __str__ that he use a strange thing that he do __class__.__name__ the full code is : def __str__(self): return '{} {},HP:{},xp:{}'.format(self.col.title(),self.__class__.__name__,self.points,self.exp) u can use self.class and it work the Writer comment for this part i mean __class__.__name__ he say . __name__ that is the string version of the class name can someone explain to my what Means 回答1:

问题 i was reading a book about python class the main problem that i found that in an example in part of __str__ that he use a strange thing that he do __class__.__name__ the full code is : def __str__(self): return '{} {},HP:{},xp:{}'.format(self.col.title(),self.__class__.__name__,self.points,self.exp) u can use self.class and it work the Writer comment for this part i mean __class__.__name__ he say . __name__ that is the string version of the class name can someone explain to my what Means 回答1:

问题 In python how can we create a new object without having a predefined Class and later dynamically add properties to it ? example: dynamic_object = Dynamic() dynamic_object.dynamic_property_a = "abc" dynamic_object.dynamic_property_b = "abcdefg" What is the best way to do it? EDIT Because many people advised in comments that I might not need this. The thing is that I have a function that serializes an object's properties. For that reason, I don't want to create an object of the expected class

问题 I'm working on an application that involves generating forms at a high level of abstraction (it's a CMS app). I want to dynamically create CFormModel objects and set the form fields on-the-fly. I think I can do this by extending CFormModel, and then dynamically creating the class properites that represent the form fields ('attributes' in the Yii lingo). To illustrate, instead of specifying a login form in the following class (defined in a file): // From: http://www.yiiframework.com/doc/guide

问题 I'm working on an application that involves generating forms at a high level of abstraction (it's a CMS app). I want to dynamically create CFormModel objects and set the form fields on-the-fly. I think I can do this by extending CFormModel, and then dynamically creating the class properites that represent the form fields ('attributes' in the Yii lingo). To illustrate, instead of specifying a login form in the following class (defined in a file): // From: http://www.yiiframework.com/doc/guide

问题 I'm pretty sure this is a duplicate question, but I've been searching for a while and I didn't get any smarter. Imagine this class: class Entity { public: int x, y; Entity() : x(0), y(0) { } Entity(int x, int y) : x(x), y(y) { } } And here are multiple ways of initializing the class: Entity ent1; Entity ent2(); Entity ent3(1, 2); Entity ent4 = Entity(); Entity ent5 = Entity(2, 3); I also know that's it's possible make an object on the heap memory, but that's not a great mystery to me at this

问题 I'm working on an application that involves generating forms at a high level of abstraction (it's a CMS app). I want to dynamically create CFormModel objects and set the form fields on-the-fly. I think I can do this by extending CFormModel, and then dynamically creating the class properites that represent the form fields ('attributes' in the Yii lingo). To illustrate, instead of specifying a login form in the following class (defined in a file): // From: http://www.yiiframework.com/doc/guide

问题 I'm pretty sure this is a duplicate question, but I've been searching for a while and I didn't get any smarter. Imagine this class: class Entity { public: int x, y; Entity() : x(0), y(0) { } Entity(int x, int y) : x(x), y(y) { } } And here are multiple ways of initializing the class: Entity ent1; Entity ent2(); Entity ent3(1, 2); Entity ent4 = Entity(); Entity ent5 = Entity(2, 3); I also know that's it's possible make an object on the heap memory, but that's not a great mystery to me at this