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Polymorphism in C++
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To understand polymorphism - as the term is used in Computing Science - it helps to start from a simple test for and definition of it. Consider:
Type1 x;
Type2 y;
f(x);
f(y);
Here, f() is to perform some operation and is being given values x and y as inputs.
To exhibit po...
How can I set the default value for an HTML element?
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edited Mar 18 at 12:10
answered Aug 19 '10 at 1:12
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How do I prevent Android taking a screenshot when my app goes to the background?
...nt that the app has to prevent the OS to take a screenshot of the app when it's being pushed into the background for security reasons. This way it won't be able to see the last active screen when switching between apps.
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How to efficiently concatenate strings in go
In Go, a string is a primitive type, which means it is read-only, and every manipulation of it will create a new string.
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How to modify list entries during for loop?
Now I know that it is not safe to modify the list during an iterative looping. However, suppose I have a list of strings, and I want to strip the strings themselves. Does replacement of mutable values count as modification?
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error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' — Miss
My problem started off with me not being able to log in as root any more on my mysql install. I was attempting to run mysql without passwords turned on... but whenever I ran the command
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Deep cloning objects
...is to implement the ICloneable interface (described here, so I won't regurgitate), here's a nice deep clone object copier I found on The Code Project a while ago and incorporated it in our stuff.
As mentioned elsewhere, it requires your objects to be serializable.
using System;
using System.IO;
usin...
Why should I not wrap every block in “try”-“catch”?
...ave always been of the belief that if a method can throw an exception then it is reckless not to protect this call with a meaningful try block.
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Chained method calls indentation style in Python [duplicate]
From reading PEP-8, I get it that you should put the closing parenthesis on the same line as the last argument in function calls:
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How to get JSON from URL in JavaScript?
...;format=json&diagnostics=true&env=store://datatables.org/alltableswithkeys&callback', function(data) {
// JSON result in `data` variable
});
If you don't want to use jQuery you should look at this answer for pure JS solution: https://stackoverflow.com/a/2499647/1361042
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