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Polymorphism in C++
...becomes possible to use operations specific to those classes of types. The word "classes" here can be interpreted in the OOP sense, but really just refers to (usually named) sets of types that share certain operations.
So parametric polymorphism is usually taken (at least by default) to imply uncon...
What is the difference between quiet NaN and signaling NaN?
...ed int new;
excepts &= FE_ALL_EXCEPT;
/* Get the current control word of the x87 FPU. */
__asm__ ("fstcw %0" : "=m" (*&new_exc));
old_exc = (~new_exc) & FE_ALL_EXCEPT;
new_exc &= ~excepts;
__asm__ ("fldcw %0" : : "m" (*&new_exc));
/* And now the same for the S...
Where and why do I have to put the “template” and “typename” keywords?
...certain names are types and that certain names aren't.
The "typename" keyword
The answer is: We decide how the compiler should parse this. If t::x is a dependent name, then we need to prefix it by typename to tell the compiler to parse it in a certain way. The Standard says at (14.6/2):
A nam...
Is it possible to apply CSS to half of a character?
... This is very cool. It's worth noting that this technique breaks word-wrapping, white-space, and character-spacing CSS.
– Andrew Ensley
Dec 31 '18 at 17:52
...
Should I implement __ne__ in terms of __eq__ in Python?
...;> f2 == f
False
>>> f2 != f
True
Performance
Don't take my word for it, let's see what's more performant:
class CLevel:
"Use default logic programmed in C"
class HighLevelPython:
def __ne__(self, other):
return not self == other
class LowLevelPython:
def __ne__...
Relational table naming convention [closed]
... only good thing about *fixes I can think of, is that you can use reserved words like where_t, tbl_order, user_vw. Of course, in those examples, using plural would have solved the issue :)
Don't name all keys "ID". Keys refering to the same thing, should have the same name in all tables. The user i...
What to do Regular expression pattern doesn't match anywhere in string?
...ect"
id => "twotabsearchtextbox"
name => "field-keywords"
size => "50"
style => "width:100%; background-color: #FFF;"
title => "Search for"
type => "text"
value => ""
input tag #2 at character 10335:
alt => "Go"...
Maximum single-sell profit
...so hand back the minimum and maximum values stored in each half! In other words, our recursion hands back three things:
The buy and sell times to maximize profit.
The minimum value overall in the range.
The maximum value overall in the range.
These last two values can be computed recursively us...
Comparison between Corona, Phonegap, Titanium
...that? With the App Store, I pick an app, tap the "Buy" button, enter a password, and I'm done. It installs. Seconds later, I'm using it. If I had to use someone else's one-off mobile web transaction interface, which likely means having to tap out my name, address, phone number, CC number, and other ...
What are metaclasses in Python?
...n Python. Classes are objects too.
Yes, objects.
As soon as you use the keyword class, Python executes it and creates
an OBJECT. The instruction
>>> class ObjectCreator(object):
... pass
...
creates in memory an object with the name "ObjectCreator".
This object (the class) is itself ...