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What are the mathematical/computational principles behind this game?
...l from the slope set for the slope of the line. Lines have an offset (i.e. starting point on the left), and a slope (i.e. how many symbols to go up for each step right). When the line leaves the grid at the top, re-enter at the bottom. See this example figure (pictures from boardgamegeek) for two su...
What's invokedynamic and how do I use it?
...ds article, I articulated about the motivation behind Inoke Dynamic. Let's start with a rough definition of Indy.
Introducing Indy
Invoke Dynamic (Also known as Indy) was part of JSR 292 intending to enhance the JVM support for Dynamic Type Languages. After its first release in Java 7, The invoked...
What is a CSRF token ? What is its importance and how does it work?
...t mix up GET, POST and other request methods as
described above, a good start would be to protect all POST requests by
default.
You don’t have to protect PUT and DELETE requests, because as
explained above, a standard HTML form cannot be submitted by a browser
using those methods.
...
How to count the number of set bits in a 32-bit integer?
...count will become mainstream in the x86 architecture, so it makes sense to start using the intrinsic now. Other architectures have the popcount for years.
On x86, you can tell the compiler that it can assume support for popcnt instruction with -mpopcnt or -msse4.2 to also enable the vector instru...
Angular JS: What is the need of the directive’s link function when we already had directive’s contro
... want to cross the boundaries of a controller/model/view (template).
Let' start with the parameters which are passed into the link function:
function link(scope, element, attrs) {
scope is an Angular scope object.
element is the jqLite-wrapped element that this directive matches.
attrs is an ob...
Undefined behavior and sequence points
...using a C++17 compliant compiler does not necessarily mean that one should start writing such expressions.
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What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for Code
...braces inside of parentheses) is not the same as {} (opening braces as the start of a line of code). So when you type out({} + []) you are forcing the {} to be something which it is not when you type {} + []. This is part of the overall 'wat'-ness of Javascript.
The basic idea was simple JavaScript...
Multiple github accounts on the same computer?
...ver account, you simply need to generate a new SSH key.
But before we can start pushing/pulling repos with your second identity, we gotta get you into shape – Let's assume your system is setup with a typical id_rsa and id_rsa.pub key pair. Right now your tree ~/.ssh looks like this
$ tree ~/.ssh...
Java's Virtual Machine and CLR
...ing system, even where it can.
For example, let's say that a JVM process starts and allocates 25 MB of memory from the operating system initially. The app code then attempts allocations that require an additional 50 MB. The JVM will allocate an additional 50 MB from the operating system. Once the ...
Stopping scripters from slamming your website
...'t win any races anymore, because "real people" will have a 10 minute head-start.
Benefits:
No hassle or problems for users (like CAPTCHAs).
Implemented fully on server-side. (no reliance on Javascript/Flash)
Serving up an older, cached page should be less performance intensive than a live page....