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Setting default permissions for newly created files and sub-directories under a directory in Linux?
I have a bunch of long-running scripts and applications that are storing output results in a directory shared amongst a few users. I would like a way to make sure that every file and directory created under this shared directory automatically had u=rwxg=rwxo=r permissions.
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How to get the raw value an field?
How can i get the "real" value of an <input type="number"> field?
4 Answers
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foldl versus foldr behavior with infinite lists
... question uses foldr. It stops processing an infinite list when the predicate is satisfied.
4 Answers
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How can I dynamically create derived classes from a base class
... new classes with dynamic
names and parameter names.
The parameter verification in __init__ just does not allow
unknown parameters, if you need other verifications, like
type, or that they are mandatory, just add the logic
there:
class BaseClass(object):
def __init__(self, classtype):
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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?
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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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