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How do I create an immutable Class?
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Where is Erlang used and why? [closed]
...• Yahoo! uses it in its social bookmarking service, Delicious, which has more than
5 million users and 150 million bookmarked URLs.
• Facebook uses Erlang to power the backend of its chat service, handling more than
100 million active users.
• WhatsApp uses Erlang to run messaging servers, a...
Random / noise functions for GLSL
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FWIW, the function described here is discussed in more detail here.
– Loomchild
Jul 3 '13 at 12:21
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Obfuscated C Code Contest 2006. Please explain sykes2.c
...p; 1));
}
}
Converting the recursion to a loop and sneaking in a bit more simplification:
// please don't pass any command-line arguments
main() {
int i;
for(i=447; i>=0; i--) {
if(i % 64 == 0) {
putchar('\n');
} else {
char t = __TIME__[7 - ...
What is the difference between Set and List?
...t.
Set<E>:
A collection that contains no
duplicate elements. More formally,
sets contain no pair of elements e1
and e2 such that e1.equals(e2), and at
most one null element. As implied by
its name, this interface models the
mathematical set abstraction.
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Plot logarithmic axes with matplotlib in python
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Matplotlib has semilogy(). Furthermore, it is easier to directly use pyplot.yscale() than to use ax.set_yscale('log'), as there is no need to get the ax object (which is not always immediately available).
– Eric O Lebigot
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What are the differences between concepts and template constraints?
... Cont must be a Sortable type. A neat thing is that it can be written in a more concise form as:
template <Sortable Cont>
void sort(Cont& container);
Now if you attempt to pass anything that is not considered Sortable to this function, you'll get a nice error that immediately tells you ...
error: ‘NULL’ was not declared in this scope
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Now that C++11 is more generally supported by compilers, it might be worth mentioning the nullptr keyword, which is an actual keyword and doesn't require any #includes. It's also more typesafe than NULL.
– templatetypedef...
Flask-SQLAlchemy import/context issue
...ketch of some of the power this gives you - there is obviously quite a bit more that you can do to make development even easier (using a create_app pattern, auto-registering blueprints in certain folders, etc.)
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