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Why would I ever use push_back instead of emplace_back?
...e a bit over the past four years. I have come to the conclusion that most explanations about push_back vs. emplace_back miss the full picture.
Last year, I gave a presentation at C++Now on Type Deduction in C++14. I start talking about push_back vs. emplace_back at 13:49, but there is useful inform...
How do I fix “Failed to sync vcpu reg” error?
I'm trying to use the Intel HAX x86 emulator for Windows (8, if that matters). I installed everything and created an AVD for the android version, and everything appears correct, but when I run it, I get this output:
...
Call a Server-side Method on a Resource in a RESTful Way
...tues of the Web. This is fine. What we don't really like is needless complexity. Too often a programmer or a company brings in RPC-style Services for a job that plain old HTTP could handle just fine. The effect is that HTTP is reduced to a transport protocol for an enormous XML payload that explains...
How to prompt for user input and read command-line arguments [closed]
...md module for easily creating a mini-command line interpreter (with help texts and autocompletion) and raw_input (input for Python 3+) for reading a line of text from the user.
text = raw_input("prompt") # Python 2
text = input("prompt") # Python 3
Command line inputs are in sys.argv. Try this ...
An item with the same key has already been added
...1 (it'll throw the error). Also, check to make sure there's no similar edmx names (table column has "CURRENCY", one of Navigation Properties name had "Currency")
– Robert Koch
Mar 1 '12 at 23:06
...
Python 3: ImportError “No Module named Setuptools”
...-get install python3-setuptools
For an older version of Python (Python 2.x):
sudo apt-get install python-setuptools
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How can I create a simple message box in Python?
... An included library with Python install.
ctypes.windll.user32.MessageBoxW(0, "Your text", "Your title", 1)
Or define a function (Mbox) like so:
import ctypes # An included library with Python install.
def Mbox(title, text, style):
return ctypes.windll.user32.MessageBoxW(0, text, title, s...
Dynamically access object property using variable
...ket notation: something['bar']
The value between the brackets can be any expression. Therefore, if the property name is stored in a variable, you have to use bracket notation:
var something = {
bar: 'foo'
};
var foo = 'bar';
// both x = something[foo] and something[foo] = x work as expected
...
Difference between len() and .__len__()?
...ut a.len() would not be as clear. When Python started __len__ didn't even exist and len was a special thing that worked with a few types of objects. Whether or not the situation this leaves us makes total sense, it's here to stay.
...
Is using Random and OrderBy a good shuffle algorithm?
...Fisher-Yates shuffle which swaps elements.
Implementing a simple Shuffle extension method would basically consist of calling ToList or ToArray on the input then using an existing implementation of Fisher-Yates. (Pass in the Random as a parameter to make life generally nicer.) There are plenty of im...