instance-variables

相关标签：javascript jquery android 多少钱 iPhone

Should composite properties of a Model class be always initialized?

I tried to find a similar question on SO but had no luck. Apologies if it\'s a duplicate. What are drawbacks to in开发者_高级运维stantiating class-type variables when they are declared?[详细]

2023-02-18 14:08 分类：问答
Android Static Variable Scope and Lifetime

I have an application that has a Service that uses an ArrayList<Double> to store numbers in the background for a very long time; the variable is initialized when the service started.[详细]

2023-02-17 07:12 分类：问答
Is it more efficient to use the keyword this when accessing instance variables?

The this keyword is optional when accessing instance fields, properties, and methods in languages like C# and Java.[详细]

2023-02-14 10:40 分类：问答
Ruby: Accessing class instance variables from one class in another class's class method

I am working on a ruby program and have run into the following problem. I have two classes AClass and BClass as follows:[详细]

2023-02-12 06:24 分类：问答
Variable number of arguments to constructor with variable types creating variable private member in C++

I have really heavy task to achieve and I haven\'t found any solution good enough. So, here is the description:[详细]

2023-02-11 13:35 分类：问答
Ruby convert Object to Hash

Let\'s say I have a Gift object with @name = \"book\" & @price = 15.95. What\'s the best way to convert that to t开发者_运维问答he Hash {name: \"book\", price: 15.95} in Ruby, not Rails (although[详细]

2023-02-11 11:23 分类：问答
variable declaration in iphone

Whats the difference between variable declared in interface (in \".h\" file) and in implementation in (in .m file)??开发者_C百科Data declared inside the brackets in an @interface { ... } ... @end bloc[详细]

2023-02-11 08:45 分类：问答
Must every ivar be a property?

I see it recommended all over the place when coding for iOS that properties should be used for accessing instance variables because of the benefits this lends to memory management, among other things.[详细]

2023-02-10 21:57 分类：问答
Replace own instance inside a java object

In my case the implementator shall be able to \"update\" an object. //creating an instance (follows the active record pattern)[详细]

2023-02-10 09:52 分类：问答
Objective-C 2.0: Inheriting synthesised instance variables

I have the following code: // ClassA.h @interface ClassA : NSObject @property (nonatomic, retain, readonly) id my_property;[详细]

2023-02-08 23:55 分类：问答