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What is a “Stub”?
...es from the notion of a Stunt Double in movies. (One of his aims was to avoid using any name that was already widely used.) Meszaros then defined four particular kinds of double:
Dummy objects are passed around but never actually used. Usually they are just used to fill parameter lists.
Fa...
bool operator ++ and --
...des 0 [false] and 2 or more [true]).
So as a short-hand ++ worked, and -- didn't.
++ is allowed on bools for compatibility with this, but its use is deprecated in the standard and it was removed in C++17.
This assumes that I only use x as an boolean, meaning that overflow can't happen until I've do...
how to provide a swap function for my class?
... do with SFINAE.
// some algorithm in your code
template<class T>
void foo(T& lhs, T& rhs) {
using std::swap; // enable 'std::swap' to be found
// if no other 'swap' is found through ADL
// some code ...
swap(lhs, rhs); // unqualified call, uses ADL and...
How to link godaddy domain with AWS Elastic Beanstalk environment?
... be with GoDaddy, but handling requests for your site will be on Amazon's side.
Here is what you need to do:
Create a new Hosted Zone for your site in Route 53 console:
Open newly added domain name, find NS record and copy servers:
In GoDaddy's Domain Manager export records via "Export Zone Fil...
What is the difference between NaN and None?
...
Is <NA> also an np.nan?
– Gathide
May 6 at 5:06
add a comment
...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...0.0) requires bundler (>= 1.3.0, < 2.0)), which causes problems. Any idea how to avoid those 'open' dependencies?
– Guillermo Grau
Apr 4 '14 at 9:23
...
Turn a simple socket into an SSL socket
...;
#include <openssl/err.h>
You will need to initialize OpenSSL:
void InitializeSSL()
{
SSL_load_error_strings();
SSL_library_init();
OpenSSL_add_all_algorithms();
}
void DestroySSL()
{
ERR_free_strings();
EVP_cleanup();
}
void ShutdownSSL()
{
SSL_shutdown(cSSL);
...
What is the difference between an annotated and unannotated tag?
...
TL;DR
The difference between the commands is that one provides you with a tag message while the other doesn't. An annotated tag has a message that can be displayed with git-show(1), while a tag without annotations is just a named pointer to a commit.
More About Lightweight Tags
Ac...
Determining type of an object in ruby
...be particular about the type.
For example, object.is_a?(String) is too rigid since another class might implement methods that convert it into a string, or make it behave identically to how String behaves. object.respond_to?(:to_s) would be a better way to test that the object in question does what ...
Python : List of dict, if exists increment a dict value, if not append a new dict
....
But a dictionary full of counts is also a common pattern, so Python provides a ready-to-use class: containers.Counter You just create a Counter instance by calling the class, passing in any iterable; it builds a dictionary where the keys are values from the iterable, and the values are counts of...