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Integrating the ZXing library directly into my Android application
...deEncoder(qrData, null,
Contents.Type.TEXT, BarcodeFormat.QR_CODE.toString(), qrCodeDimention);
try {
Bitmap bitmap = qrCodeEncoder.encodeAsBitmap();
imageView.setImageBitmap(bitmap);
} catch (WriterException e) {
e.printStackTrace();
}
Here is Contents.java
//
// * Copyright...
Why is C so fast, and why aren't other languages as fast or faster? [closed]
...real programmers" write in C, and that C is so much faster because it's "close to the machine." Leaving the former assertion for another post, what is special about C that allows it to be faster than other languages? Or put another way: what's to stop other languages from being able to compile down ...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
...cific character in a character set. CP1 is shorthand for CP1252 in the Microsoft sub-culture. Windows is the only platform that uses CP1252 indigenously as it is a hold-over from DOS days. Though it is very similar to ISO 8859-1, they are not the same. There are differences in mapped characters like...
docker mounting volumes on host
...ainer and store any files created or edited inside that directory on your hosts disk outside the container file structure, bypassing the union file system.
The idea is that your volumes can be shared between your docker containers and they will stay around as long as there's a container (running or...
How Python web frameworks, WSGI and CGI fit together
I have a Bluehost account where I can run Python scripts as CGI. I guess it's the simplest CGI, because to run I have to define the following in .htaccess :
...
What's the rationale for null terminated strings?
...acters with a definite meaning). A binary file is an array of chars, but those chars don't mean anything for a human.
– BlackBear
Dec 11 '10 at 20:48
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What is the fastest integer division supporting division by zero no matter what the result is?
...metic and the use of condition flags are invented in hardware for this purpose. In general condition flags are only accessible in C through using idiom. That is why it so hard to make a portable multiple precision integer library in C without resorting to (inline) assembly. My guess is that most dec...
What's the need of array with zero elements?
...have an incomplete array type; this is called a flexible array member. In most situations,
the flexible array member is ignored. In particular, the size of the structure is as if the
flexible array member were omitted except that it may have more trailing padding than
the omission would ...
How to style a checkbox using CSS
...t apply styles (borders, etc.) directly to the checkbox element and have those styles affect the display of the HTML checkbox. What has changed, however, is that it's now possible to hide the actual checkbox and replace it with a styled element of your own, using nothing but CSS. In particular, beca...
Timer function to provide time in nano seconds using C++
...
What others have posted about running the function repeatedly in a loop is correct.
For Linux (and BSD) you want to use clock_gettime().
#include <sys/time.h>
int main()
{
timespec ts;
// clock_gettime(CLOCK_MONOTONIC, &ts);...