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How should I have explained the difference between an Interface and an Abstract class?
...h methods
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But what if encryptPassword() is not database dependent, and it's the same for each class? Then the above would not be a good approach.
Instead, consider this approach:
public abstract class LoginAuth{
public String encryptPassword(String pass){
// Implement the same d...
Remove all subviews?
When my app gets back to its root view controller, in the viewDidAppear: method I need to remove all subviews.
15 Answers...
ruby inheritance vs mixins
In Ruby, since you can include multiple mixins but only extend one class, it seems like mixins would be preferred over inheritance.
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How does the compilation/linking process work?
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Preprocessing: the preprocessor takes a C++ source code file and deals with the #includes, #defines and other preprocessor directives. The output of this step is a "pure" C++ file without pre-processor directives.
Compilation: the compiler takes the pre-processor's output and produces an object f...
Where is SQL Server Management Studio 2012?
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edited Dec 20 '17 at 2:10
gg89
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Is returning null bad design? [closed]
...e rationale behind not returning null is that you do not have to check for it and hence your code does not need to follow a different path based on the return value. You might want to check out the Null Object Pattern which provides more information on this.
For example, if I were to define a meth...
How does a PreparedStatement avoid or prevent SQL injection?
I know that PreparedStatements avoid/prevent SQL Injection. How does it do that? Will the final form query that is constructed using PreparedStatements will be a string or otherwise?
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Semantic-ui vs Bootstrap [closed]
...e of Frameworks in Semantic-UI, so I will contribute and hope the best for it, but I will not use it for big projects that depend on a huge feedbacks and supports!
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What is the difference between an abstract function and a virtual function?
...nce between an abstract function and a virtual function? In which cases is it recommended to use virtual or abstract? Which one is the best approach?
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How do you check that a number is NaN in JavaScript?
I’ve only been trying it in Firefox’s JavaScript console, but neither of the following statements return true:
30 Answe...