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Is it possible to print a variable's type in standard C++?
...ltype(x), which can turn an expression into a type. And decltype() comes with its own set of very interesting rules. For example decltype(a) and decltype((a)) will generally be different types (and for good and understandable reasons once those reasons are exposed).
Will our trusty typeid(a).name...
How to suppress “unused parameter” warnings in C?
...
I usually write a macro like this:
#define UNUSED(x) (void)(x)
You can use this macro for all your unused parameters. (Note that this works on any compiler.)
For example:
void f(int x) {
UNUSED(x);
...
}
...
Why does += behave unexpectedly on lists?
... += tries to call the __iadd__ special method, and if that isn't available it tries to use __add__ instead. So the issue is with the difference between these special methods.
The __iadd__ special method is for an in-place addition, that is it mutates the object that it acts on. The __add__ special ...
Obfuscated C Code Contest 2006. Please explain sykes2.c
...
Let's de-obfuscate it.
Indenting:
main(_) {
_^448 && main(-~_);
putchar(--_%64
? 32 | -~7[__TIME__-_/8%8][">'txiZ^(~z?"-48] >> ";;;====~$::199"[_*2&8|_/64]/(_&2?1:8)%8&1
: 10);
}
Introduc...
Set attributes from dictionary in python
Is it possible to create an object from a dictionary in python in such a way that each key is an attribute of that object?
...
Create a custom event in Java
...ener {
void someoneSaidHello();
}
// Someone who says "Hello"
class Initiater {
private List<HelloListener> listeners = new ArrayList<HelloListener>();
public void addListener(HelloListener toAdd) {
listeners.add(toAdd);
}
public void sayHello() {
S...
How to create module-wide variables in Python? [duplicate]
...e a way to set up a global variable inside of a module? When I tried to do it the most obvious way as appears below, the Python interpreter said the variable __DBNAME__ did not exist.
...
How to load all modules in a folder?
Could someone provide me with a good way of importing a whole directory of modules?
I have a structure like this:
18 Answ...
Adding a Method to an Existing Object Instance
I've read that it is possible to add a method to an existing object (i.e., not in the class definition) in Python.
16 Answ...
Dictionary vs Object - which is more efficient and why?
... default can be overridden by defining __slots__ in a new-style class definition. The __slots__ declaration takes a sequence of instance variables and reserves just enough space in each instance to hold a value for each variable. Space is saved because __dict__ is not created for each instance.
So ...