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When should we use Observer and Observable?
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You have a concrete example of a Student and a MessageBoard. The Student registers by adding itself to the list of Observers that want to be notified when a new Message is posted to the MessageBoard. When a Message is added to the MessageBoard, it iterates over it...
Enabling ProGuard in Eclipse for Android
The new documentation on ProGuard for Android says to add a line to the default.properties file in the project home directory. However, on opening this file, I read at the top:
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What is the best way to concatenate two vectors?
I'm using multitreading and want to merge the results. For example:
8 Answers
8
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Get string character by index - Java
...letter); // Prints f
If you want more information on the Character class and the toString method, I pulled my info from the documentation on Character.toString.
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Changing password with Oracle SQL Developer
...assword replace
old_password ;
You can check more options for this command here: ALTER USER-Oracle DOCS
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NSDefaultRunLoopMode vs NSRunLoopCommonModes
...me sort or long-running operation without interaction with external events and without timers, you do not need a run loop, but if your thread needs to respond to incoming events, it should be attached to a run loop in order to wake up the thread when new events arrive. This is the case of NSURLConne...
How to handle back button in activity
How to handle a back button in an activity? I have some buttons. If I click one of the button it's redirecting to the buttons which I required. It's working fine but When I press back button it gets finished.
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How to implement a queue with three stacks?
...stion in an algorithms book ( Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne).
5 Answers
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Using “Object.create” instead of “new”
...xist, if you call again this method on an existing object instance, the id and name properties will change.
Object.create lets you initialize object properties using its second argument, e.g.:
var userB = {
sayHello: function() {
console.log('Hello '+ this.name);
}
};
var bob = Object.cre...
Is there a link to GitHub for downloading a file in the latest release of a repository?
...ould redirected to the latest tagged package.zip release asset. Hope it's handy!
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