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What do pty and tty mean?
...any mentions of pty and tty in some opensource projects, could someone can tell me what do they mean and what is the difference between them? Thanks!
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How does std::move() transfer values into RValues?
...reference<T>::type&& move(T&& arg)
{
return static_cast<typename remove_reference<T>::type&&>(arg);
}
Let's start with the easier part - that is, when the function is called with rvalue:
Object a = std::move(Object());
// Object() is temporary, which ...
Why does an overridden function in the derived class hide other overloads of the base class?
...he word "hide"), you already know what is going on here. The phenomenon is called "name hiding". For some reason, every time someone asks a question about why name hiding happens, people who respond either say that this called "name hiding" and explain how it works (which you probably already know),...
What is the boundary in multipart/form-data?
...d the following data to the web server:
name = John
age = 12
using application/x-www-form-urlencoded would be like this:
name=John&age=12
As you can see, the server knows that parameters are separated by an ampersand &. If & is required for a parameter value then it must be encoded...
What is a Context Free Grammar?
Can someone explain to me what a context free grammar is? After looking at the Wikipedia entry and then the Wikipedia entry on formal grammar, I am left utterly and totally befuddled. Would someone be so kind as to explain what these things are?
...
What are the differences between poll and select?
I am referring to the POSIX standard select and poll system C API calls.
3 Answers
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Constructor overloading in Java - best practice
...constructors as simple as possible, and the simplest way is that they only call this(...). That way you only need to check and handle the parameters once and only once.
public class Simple {
public Simple() {
this(null);
}
public Simple(Resource r) {
this(r, null);
...
What are “Groovy” and “Grails” and what kinds of applications are built using them?
...s Groovy on Grails?
It doesn't exist under this name anymore. It's simply called Grails now.
What is Groovy?
Originally, a dynamic language for the JVM. However, since Groovy 2.0, both static and dynamic typing are supported.
What is Grails?
Grails (previously known as "Groovy on Grails") is a pr...
Are lists thread-safe?
...use queues with multiple threads, instead of lists and .pop() . Is this because lists are not thread-safe, or for some other reason?
...
Common MySQL fields and their appropriate data types
... I would never store a phone number in any kind of integer field, mainly because:
You don't need to do any kind of arithmetic with it, and
Sooner or later someone's going to try to (do something like) put brackets around their area code.
In general though, I seem to almost exclusively use:
INT...