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Is there a way to override class variables in Java?
...e).Just don't declare the variable but initialize (change) in the constructor or static block.
The value will get reflected when using in the blocks of parent class
if the variable is static then change the value during initialization itself with static block,
class Son extends Dad {
static {...
When should I use C++14 automatic return type deduction?
With GCC 4.8.0 released, we have a compiler that supports automatic return type deduction, part of C++14. With -std=c++1y , I can do this:
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What, exactly, is needed for “margin: 0 auto;” to work?
...owever, I know that the element and its parent must meet certain criteria for the auto margin to work, and I can never seem to get the magic right.
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Allow user to set up an SSH tunnel, but nothing else
...ow a user to set up an SSH tunnel to a particular machine on a particular port (say, 5000), but I want to restrict this user as much as possible. (Authentication will be with public/private keypair).
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Get name of current script in Python
...ile. When used in the main module, this is the name of the script that was originally invoked.
If you want to omit the directory part (which might be present), you can use os.path.basename(__file__).
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How to default to other directory instead of home directory
I am developing on a windows machine. The only place I need for linux command line is Git Bash. The problem is: When I open it, I am in the home directory. I have to change the directory to my workspace, like:
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What is the correct way to start a mongod service on linux / OS X?
I've installed mongodb and have been able to run it, work with it, do simple DB read / write type stuff. Now I'm trying to set up my Mac to run mongod as a service.
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In a Bash script, how can I exit the entire script if a certain condition occurs?
... if compiling the code fails in the first place, in which case I'll just abort the tests.
7 Answers
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Deleting an element from an array in PHP
...here an easy way to delete an element from an array using PHP, such that foreach ($array) no longer includes that element?
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AngularJS : How to watch service variables?
...ou want to avoid the tyranny and overhead of $watch.
In the service:
factory('aService', function() {
var observerCallbacks = [];
//register an observer
this.registerObserverCallback = function(callback){
observerCallbacks.push(callback);
};
//call this when you know 'foo' has been...