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Does Java casting introduce overhead? Why?
...enerated machine code.
First that pointer to the runtime type needs to be read. This is necessary for calling a virtual method in a similar situation anyway.
For casting to a class type, it is known exactly how many superclasses there are until you hit java.lang.Object, so the type can be read at ...
How to remove certain characters from a string in C++?
...this work? Is it not a double negative to use erase and remove? To me this reads: "erase the characters that are in positions where ()- aren't." And since each one is done at a time, shouldn't it remove ALL characters? I've read the documentation on both functions, and this makes no sense to me. cpl...
Using Java with Nvidia GPUs (CUDA)
...allel. The first one refers, roughly speaking, to problems where several threads are working on their own tasks, more or less independently. The second one refers to problems where many threads are all doing the same - but on different parts of the data.
The latter is the kind of problem that GPUs...
Single vs Double quotes (' vs ")
...this: <a onclick="alert(\"Clicked!\")">. However, this is a lot less readable.
– fabspro
Jul 16 '12 at 13:36
...
How to pattern match using regular expression in Scala?
...schaef: that case p.firstName.lastName.Map(... pattern—how on earth do I read that?
– Erik Kaplun
Feb 16 '14 at 21:37
1
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Calculate MD5 checksum for a file
I'm using iTextSharp to read the text from a PDF file. However, there are times I cannot extract text, because the PDF file is only containing images. I download the same PDF files everyday, and I want to see if the PDF has been modified. If the text and modification date cannot be obtained, is a ...
What is the difference between localStorage, sessionStorage, session and cookies?
...n games). The data stored in localStorage and sessionStorage can easily be read or changed from within the client/browser so should not be relied upon for storage of sensitive or security-related data within applications.
Cookies
This is also true for cookies, these can be trivially tampered with...
Accessing JPEG EXIF rotation data in JavaScript on the client side
...hat extracts the orientation tag as fast as possible (It uses DataView and readAsArrayBuffer which are available in IE10+, but you can write your own data reader for older browsers):
function getOrientation(file, callback) {
var reader = new FileReader();
reader.onload = function(e) {...
What is an EJB, and what does it do?
...ly a massive number of requests from various calling messages/processes
/threads, they are distributed across the available EJB instances in the pool first
and then queued. This means that if the number of incoming requests per second is
greater than the server can handle, we degrade gracefully -...
Long-held, incorrect programming assumptions [closed]
...new language, computational complexity, lambda expressions, you name it).
Reading blogs, Stack Overflow and programming books always seemed to make me feel that I was behind the curve on the things that all programmers must just know intuitively.
I've realized over time that I'm effectively compa...