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Read an Excel file directly from a R script
...character data (i.e., not comma-formatted numbers, dates, formulas with divide-by-zero errors, missing values, etc. etc. ..) I generally have no problem with this process.
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PHP 5: const vs static
...he first execution of a function) and can store its value between function calls, example:
function foo()
{
static $numOfCalls = 0;
$numOfCalls++;
print("this function has been executed " . $numOfCalls . " times");
}
...
What is polymorphism, what is it for, and how is it used?
...now. There have been many "silver bullets" during my long career which basically just fizzled out but the OO paradigm has turned out to be a good one. Learn it, understand it, love it - you'll be glad you did :-)
(a) I originally wrote that as a joke but it turned out to be correct and, therefore...
Truncating long strings with CSS: feasible yet?
... text with plain HTML and CSS, so that dynamic content can fit in a fixed-width-and-height layout?
5 Answers
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RequestDispatcher.forward() vs HttpServletResponse.sendRedirect()
...ng internally and the client or browser is not involved.
When forward is called on the requestDispatcherobject, we pass the request and response objects, so our old request object is present on the new resource which is going to process our request.
Visually, we are not able to see the forwarded...
Why are floating point numbers inaccurate?
...nted a lot like scientific notation: with an exponent and a mantissa (also called the significand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason it is impossible to represent some d...
What is the difference between `throw new Error` and `throw someObject`?
...he following two properties:
name: The name of the error, or more specifically, the name of the constructor function the error belongs to.
message: A description of the error, with this description varying depending on the browser.
Six possible values can be returned by the name property, which ...
How to convert IEnumerable to ObservableCollection?
...py the items to the internal collection, however if you do the foreach and call Add it will be going through InsertItem which does a lot of extra stuff that is unessesary when initially filling causing it to be slightly slower.
– Scott Chamberlain
Aug 31 '16 at...
How to Query an NTP Server using C#?
...watch.GetTimestamp(); // temp access (JIT-Compiler need some time at first call)
using (var socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
{
socket.Connect(ipEndPoint);
socket.ReceiveTimeout = 5000;
socket.Send(ntpData);
pingDuration = Stopwa...
How to initialize a vector in C++ [duplicate]
...e never delete vectors by hand because they have a destructor that automatically deletes the stuff on the heap, and the destructor is automatically called when the vector goes out of scope.
– Buge
Aug 4 '14 at 15:28
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