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What's the difference between hard and soft floating point numbers?
...e computation may be done either by floating-point hardware or in software based on integer arithmetic.
Doing it in hardware is much faster, but many microcontrollers don't have floating-point hardware. In that case you may either avoid using floating point (usually the best option) or rely on an i...
Pure virtual destructor in C++
...any type of inheritance, the chain of destructors is always called and the base class destructor doesn't have to always be defined.
– jeffD
Mar 11 '09 at 17:47
11
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Resumable downloads when using PHP to send the file?
...d in comments below have been incorporated.
A tested, working solution (based heavily on Theo's answer above) which deals with resumable downloads, in a set of a few standalone tools. This code requires PHP 5.4 or later.
This solution can still only cope with one range per request, but under any...
Can we append to a {% block %} rather than overwrite?
...n extending a template but not as well when including one, ie:
{% extends "base.html" %} vs. {% include "partial.html" %}
Say you want to include a template in the middle of your page and you'd also like it to add some javascript in a block at the end of the page: calling block.super in the include...
Is there a way to “autosign” commits in Git with a GPG key?
...should be GPG signed.
Use of this option when doing operations such as rebase can result in a large number of commits being signed. It may be convenient to use an agent to avoid typing your GPG passphrase several times.
That config is usually set per repo (you don't need to sign your private e...
HttpSecurity, WebSecurity and AuthenticationManagerBuilder
...s("ADMIN","USER");
}
configure(HttpSecurity) allows configuration of web based security at a resource level, based on a selection match - e.g. The example below restricts the URLs that start with /admin/ to users that have ADMIN role, and declares that any other URLs need to be successfully authen...
Cartesian product of multiple arrays in JavaScript
... JavaScript Style Guide - validated using ESLint with eslint-config-airbnb-base:
const f = (a, b) => [].concat(...a.map(d => b.map(e => [].concat(d, e))));
const cartesian = (a, b, ...c) => (b ? cartesian(f(a, b), ...c) : a);
Special thanks to ZuBB for letting me know about linter probl...
Virtual Memory Usage from Java under Linux, too much memory used
...ng-standing complaint with Java, but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 giga...
Encapsulation vs Abstraction?
...level and encapsulation actually at implementation level
This is the gist based on answers in this post and below ones
difference between abstraction and encapsulation?
encapsulation vs abstraction real world example
sha...
enum.values() - is an order of returned enums deterministic
...ld for each planet. Then you can have a trivial comparator compare planets based on their mean distance from Sun, and order them using this comparator. This is IMHO a clean and foolproof solution. Whereas your solution breaks as soon as e.g. a new colleague decides that planets should obviously be l...