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Virtual functions and performance - C++
... return x=to; } // and so on for the other three
}
Then I set up three arrays each containing 1024 of these vectors (small enough to fit in L1) and ran a loop that added them to one another (A.x = B.x + C.x) 1000 times. I ran this with the functions defined as inline, virtual, and regular functi...
What is digest authentication?
... and a 401 authentication request
Client sends back the following response array (username, realm, generate_md5_key(nonce, username, realm, URI, password_given_by_user_to_browser)) (yea, that's very simplified)
The server takes username and realm (plus it knows the URI the client is requesting) and ...
Advantages of std::for_each over for loop
...t there are other containers in the world than std::vector and plain old C arrays to see the advantages of for_each.
The major drawback of for_each is that it takes a functor, so the syntax is clunky. This is fixed in C++11 (formerly C++0x) with the introduction of lambdas:
std::vector<int> ...
Set timeout for ajax (jQuery)
...nternal Server Error." As of jQuery 1.5, the error
setting can accept an array of functions. Each function will be called
in turn. Note: This handler is not called for cross-domain script and
JSONP requests.
src: http://api.jquery.com/jQuery.ajax/
...
How to simplify a null-safe compareTo() implementation?
...
This does not work for Collections.sort(Arrays.asList(null, val1, null, val2, null)) as it will try to call compareTo() on a null object. It looks like a problem with the collections framework to be honest, trying to figure out how to corner this.
...
Scala constructor overload?
...on[T] = new Expectation[T] {val expected = expd }
def main(args: Array[String]): Unit = {
val expectTrueness = Expectation(true)
…
}
}
Note that I explicitly define each apply to return Expectation[T], else it would return a duck-typed Expectation[T]{val expected: L...
How do I retrieve the number of columns in a Pandas data frame?
...ook at the pandas descriptor for shape, it calls len(df.columns) but numpy arrays and matricies have them as an attribute. most efficient vectorized operations can be done with regular python syntas as opposed to vectorized operations and is almost always wrong (numba/jit operations excepted from t...
No provider for “framework:jasmine”! (Resolving: framework:jasmine)
...smine will not solve the issue. you have to add 'karma-jasmine' to plugins array like plugins: ['karma-jasmine'].
– Thaadikkaaran
Mar 4 '16 at 10:39
...
Psql list all tables
...d.datcollate as "Collate",
d.datctype as "Ctype",
pg_catalog.array_to_string(d.datacl, E'\n') AS "Access privileges"
FROM pg_catalog.pg_database d
ORDER BY 1;
**************************
so you can see that psql is searching pg_catalog.pg_database when it gets a list of databases. Sim...
How to skip to next iteration in jQuery.each() util?
I'm trying to iterate through an array of elements. jQuery's documentation says:
6 Answers
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