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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...them to be translated into something reasonably efficient for your current platform, whether it be one of those fancy bit-twiddling algorithms, or a single instruction.
A useful trick if your input can be zero is __builtin_clz(x | 1): unconditionally setting the low bit without modifying any othe...
How to create “No Activate” form in Firemonkey
...SPanel. I have written a helper class which works for both Windows and Mac platforms (Works on XE4):
unit NoActivateForm;
interface
uses Fmx.Forms, Fmx.Types
{$IFDEF POSIX}
, Macapi.AppKit
{$ENDIF}
;
type TNoActivateForm = class
private
form: TForm;
{$IFDEF POSIX}
panel: NSPanel;...
Mathematical functions in Swift
...need import UIKit.
import UIKit
You can easily discover your playground platform by opening File Inspector (⌥⌘1).
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What are the advantages of using the C++ Boost libraries? [closed]
...ause:
It is open-source and peer-reviewed.
It provides a wide range of platform agnostic functionality that STL missed.
It is a complement to STL rather than a replacement.
Many of Boost developers are on the C++ standard committee. In fact, many parts of Boost is considered to be included in th...
Unexpected results when working with very big integers on interpreted languages
...ts arbitrary precision. It will produce the correct answer on 32 or 64 bit platforms.
This can be seen by raising 2 to a power far greater than the bit width of the platform:
>>> 2**99
633825300114114700748351602688L
You can demonstrate (with Python) that the erroneous values you are g...
What exactly is Java EE?
...
Source -- Java 2 Platform, Enterprise Edition (J2EE) defines the standard for developing component-based multitier enterprise applications. J2EE simplifies building enterprise applications that are portable, scalable, and that integrate easil...
max value of integer
...has only a native capacity is only of 16 bits. My point is that the target platform the compiler has matters. E.g. if you have a compiler for your 80286 you will still generate 16-bit code and hence have 16 bit integers.
– junix
Feb 21 '13 at 15:06
...
What is the difference between Polymer elements and AngularJS directives?
...av in the documentation (polymer-project.org) has a page for all of these "Platform technologies". Each of those pages also has a pointer to the individual polyfill.
<link rel="import" href="x-foo.html"> is an HTML Import. Imports are a useful tool for including HTML in other HTML. You can inc...
Calculating a directory's size using Python?
... not produce neatly formatted results. When your code is one-off for Linux platforms, you can get formatting as usual, recursion included, as a one-liner. Except for the print in the last line, it will work for current versions of python2 and python3:
du.py
-----
#!/usr/bin/python3
import subproce...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...t 0 2012-03-28 19:07 /sys/class/tty/ttyS2/device/driver -> ../../../bus/platform/drivers/serial8250/
lrwxrwxrwx 1 root root 0 2012-03-28 19:07 /sys/class/tty/ttyS3/device/driver -> ../../../bus/platform/drivers/serial8250/
lrwxrwxrwx 1 root root 0 2012-03-28 20:43 /sys/class/tty/ttyUSB0/device...