private

问题 What does @private mean in Objective-C? 回答1: It's a visibility modifier —it means that instance variables declared as @private can only be accessed by instances of the same class . Private members cannot be accessed by subclasses or other classes. For example: @interface MyClass : NSObject { @private int someVar; // Can only be accessed by instances of MyClass @public int aPublicVar; // Can be accessed by any object } @end Also, to clarify, methods are always public in Objective-C. There are

问题 I know that we can access private constructor via reflection as @Sanjay T. Sharma mentioned in his answer of my question: Does “instanceof Void” always return false? However, @duffymo said: you can access private everything with reflection - methods, constructors, data members, everything. How can I access the private methods and the private data members? Is it possible to access local variable via reflection? Is there a way to prevent anyone from accessing private constructors, methods, and

问题 I know that we can access private constructor via reflection as @Sanjay T. Sharma mentioned in his answer of my question: Does “instanceof Void” always return false? However, @duffymo said: you can access private everything with reflection - methods, constructors, data members, everything. How can I access the private methods and the private data members? Is it possible to access local variable via reflection? Is there a way to prevent anyone from accessing private constructors, methods, and

问题 I want to know how to generate RSA private key using OpenSSL library in my C source file. I know how to generate it using terminal command. Actually my server.c file will generate a private key and send to client.c Please help me with some source code if possible, otherwise any help will be appreciated. I'm working on Linux machine. 回答1: #include <openssl/rsa.h> #include <openssl/pem.h> const int kBits = 1024; const int kExp = 3; int keylen; char *pem_key; RSA *rsa = RSA_generate_key(kBits,

问题 What is the best way to programmatically send an SMS from the iPhone? Talking to the modem on /dev/tty.debug or using private API are options. I want to make a command line SMS utility, and I want it to work on 3.x -> 4.x iOS. Also I couldn't make it work with AT+CMGF=1 & AT+CMGS="[PHONE_NUM]"\r\n[MSG]\x1A (Talking to tty.debug, iPhone 3GS iOS 4.1). 回答1: You can probably have a look at this project which seems to achieve what you want: http://code.google.com/p/iphone-sms/ 来源： https:/

问题 I want to change the default constructor (person1) from public to private and then ask the user to input the information instead of the given values. I have two different classes - Person; which is encapsulated and then PersonTest which tests the information. class Person { // Data Members private String name; // The name of this person private int age; // The age of this person private char gender; // The gender of this person // Default constructor public Person() { name = "Not Given"; age

问题 Assume I first defined a type A in which a public procedure f is defined, and may also be bonded to A. In another module I have this type extended into B. However, when I use type B, I do not want f to be exposed. By the way, I don't want to use the submod technique. complement: Assume type(A) is already defined: module mA type::A ... contains procedure::f endtype endmodule In another module B, we extend A as: module mB use mA type,extends(A)::B ... endtype endmodule In this module, f may

问题 I am trying to make python allow private variable, so I made this decorator that you put at the begging of a class so that every function will get an additional private parameter that they can modify to be what they want. as far as I can tell, it is impossible to get the variables from outside the class, but I'm not a pro. can anyone find a way to hack into the private object and get the values from it? is there a better way to do it than this? python 2.7 #this is a decorator that decorates

问题 I want to retrive some cellular network informations such as cellId and LAC. I know that there is no official way to do that, but i still experiencing some CoreTelephony routines such as CTServerConnectionGetCellID. any luck to get this working ? any help ? 回答1: Try this testing iPhone signal with code It gives you CellID but I don't think it shows LAC, I could be misinterpreting some of the output though. 来源： https://stackoverflow.com/questions/5980575/ctserverconnectiongetcellid-routine

问题 I want to access a private data member in a class. There is no member function in the class to access the private data member. It is private. I want to take the class and some how crack it open. One method was to copy the declaration of the class, make the private member public and call the new class class something_else. Then I do a reinterpret cast and copy the original object. This works. But I want something more elegant ... or perhaps generic ... or just another way. What options are