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What is the 'override' keyword in C++ used for? [duplicate]
...that "this is a virtual method, that is overriding a virtual method of the base class."
The compiler also knows that it's an override, so it can "check" that you are not altering/adding new methods that you think are overrides.
To explain the latter:
class base
{
public:
virtual int foo(fl...
What is an example of the Liskov Substitution Principle?
...havior.
Imagine you had SetWidth and SetHeight methods on your Rectangle base class; this seems perfectly logical. However if your Rectangle reference pointed to a Square, then SetWidth and SetHeight doesn't make sense because setting one would change the other to match it. In this case Square fai...
What's the best visual merge tool for Git? [closed]
...s for it. And 3-way diff is when you actually see 4 panes with test; merge-base/local/remote/result
– Evgeny
Jan 23 '11 at 13:16
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How to list the contents of a package using YUM?
...
@dimadima: The question was for yum (= RHEL based systems) which uses rpm as native packet manager (Red Hat Packet Manager). If the OP would be on a debian/ubuntu/.. system, dpkg would be the way to go, since it is the backend to apt.
– Levite
...
How to hash some string with sha256 in Java?
...binary data, and if you want to represent that in a string, you should use base64 or hex... don't try to use the String(byte[], String) constructor.
e.g.
MessageDigest digest = MessageDigest.getInstance("SHA-256");
byte[] hash = digest.digest(text.getBytes(StandardCharsets.UTF_8));
...
What is more efficient? Using pow to square or just multiply it with itself?
...b)
TEST(5, b*b*b*b*b)
template <int exponent>
double testpow(double base, long loops)
{
double x = 0.0;
boost::posix_time::ptime startTime = now();
for (long i=0; i<loops; ++i)
{
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std...
Calling parent class __init__ with multiple inheritance, what's the right way?
...The answer to your question depends on one very important aspect: Are your base classes designed for multiple inheritance?
There are 3 different scenarios:
The base classes are unrelated, standalone classes.
If your base classes are separate entities that are capable of functioning independently...
How can I get a favicon to show up in my django app?
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If you have a base or header template that's included everywhere why not include the favicon there with basic HTML?
<link rel="shortcut icon" type="image/png" href="{% static 'favicon.ico' %}"/>
...
How do I decode a base64 encoded string?
I am trying to "decode" this following Base64 string:
2 Answers
2
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How to unit test abstract classes: extend with stubs?
...his.. but to truly test any derived class you are going to be testing this base functionality over and over.. which leads you to have an abstract test fixture so you can factor out this duplication in testing. This all smells! I strongly recommend taking another look at why you are using abstract cl...