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What does “not run” mean in R help pages?
...as changing it to \dontrun{}. The function is for downloading data from an ftp and the CRAN comment is: "That is not commented on in the .Rd files. Note that example() will run these sections".
– Jeffrey Evans
Jan 30 '15 at 14:48
...
How do I get a human-readable file size in bytes abbreviation using .NET?
... some further cleaning of his method however (unnesecary assignments & casting). Furthermore I ran a test with a negative size (when you're comparing files) while the method of humbads flawlessly processes this this Log method will throw an exception!
– IvanL
...
Is null an Object?
...no
name, it is impossible to declare a
variable of the null type or to cast
to the null type. The null reference
is the only possible value of an
expression of null type. The null
reference can always be cast to any
reference type. In practice, the
programmer can ignore the null type...
SecurityError: Blocked a frame with origin from accessing a cross-origin frame
...s://www.example.com/home/index.html:80 -> Failure: different protocol
ftp://www.example.com:21 -> Failure: different protocol & port
https://google.com/search?q=james+bond -> Failure: different protocol, port & hostname
Workaround
Even though same-orig...
Count the items from a IEnumerable without iterating?
...enumerator.MoveNext())
result++;
}
return result;
So it tries to cast to ICollection<T>, which has a Count property, and uses that if possible. Otherwise it iterates.
So your best bet is to use the Count() extension method on your IEnumerable<T> object, as you will get the bes...
How to call base.base.method()?
...
Nevermind, figured it out. Cast to Func<stuff> instead of Action
– Perkins
Sep 1 '18 at 4:14
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Why is (object)0 == (object)0 different from ((object)0).Equals((object)0)?
...
When you cast the int value 0 (or any other value type) to object, the value is boxed. Each cast to object produces a different box (i.e. a different object instance). The == operator for the object type performs a reference compariso...
Timer function to provide time in nano seconds using C++
..."rdtsc" : "=a" (lo), "=d" (hi));
return time_point(duration(static_cast<rep>(hi) << 32 | lo));
}
};
} // x
All this clock does is count CPU cycles and store it in an unsigned 64-bit integer. You may need to tweak the assembly language syntax for your compiler. Or your c...
java: HashMap not working
...s aren't retained at runtime. They are just "syntactic sugar" for explicit casting to save you doing this:
Integer i = (Integer)myMap.get("foo");
To give you an example, this code is perfectly legal:
Map<String, Integer> myMap = new HashMap<String, Integer>();
Map<Integer, String&...
What does T&& (double ampersand) mean in C++11?
...t[]> ptr2{ptr1};// compile error: no copy ctor.
// So we must first cast ptr1 to an rvalue
std::unique_ptr<int[]> ptr2{std::move(ptr1)};
std::unique_ptr<int[]> TakeOwnershipAndAlter(std::unique_ptr<int[]> param,\
int size)
{
for (auto i = 0; i < size; ++i) {...