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Weird Integer boxing in Java
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The true line is actually guaranteed by the language specification. From section 5.1.7:
If the value p being boxed is true,
false, a byte, a char in the range
\u0000 to \u007f, or an int or short
number between -128 and 127, then let
r1 and r2 be the results of any two
boxing co...
Strip html from string Ruby on Rails
I'm working with Ruby on Rails, Is there a way to strip html from a string using sanitize or equal method and keep only text inside value attribute on input tag?
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Save modifications in place with awk
... important caveat here: the 'seen' array will fill up with duplicate lines from ALL the files included in the command. So if each file has e.g. a common header, that will be removed in every file after the first one. If you instead want to treat each file independently, you'll need to do something l...
Inheritance vs. Aggregation [closed]
...ginal class in a root class and a sub class. And let the new class inherit from the root class. But you should take care with this, not to create an illogical separation.
Lets add an example. We have a class 'Dog' with methods: 'Eat', 'Walk', 'Bark', 'Play'.
class Dog
Eat;
Walk;
Bark;
Pla...
Generate colors between red and green for a power meter?
...)
Another way to do would be to use a HSV colour model, and cycle the hue from 0 degrees (red) to 120 degrees (green) with whatever saturation and value suited you. This should give a more pleasing gradient.
Here's a demonstration of each technique - top gradient uses RGB, bottom uses HSV:
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What is the ideal data type to use when storing latitude / longitude in a MySQL database?
...nteger part of the coordinate. And no, the sign doesn't count - that comes from the (un)signed attribute.
– Alix Axel
May 9 '13 at 9:54
2
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Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
... yet again by Jerry Schwarz for Cfront 2.0, using the idea of manipulators from Andrew Koenig. The standard version of the library is based on this implementation.
Source "The Design & Evolution of C++", section 8.3.1.
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What's the difference between console.dir and console.log?
...ence with arrays (e.g., console.dir([1,2,3])) which are logged differently from normal objects:
> console.log([1,2,3])
[1, 2, 3]
> console.dir([1,2,3])
* Array[3]
0: 1
1: 2
2: 3
length: 3
* __proto__: Array[0]
concat: function concat() { [native code] }
co...
What function is to replace a substring from a string in C?
... // first time through the loop, all the variable are set correctly
// from here on,
// tmp points to the end of the result string
// ins points to the next occurrence of rep in orig
// orig points to the remainder of orig after "end of rep"
while (count--) {
ins...
FFmpeg on Android
...external and make away. You'll need to extract bionic(libc) and zlib(libz) from the Android build as well, as ffmpeg libraries depend on them.
Create a dynamic library wrapping ffmpeg functionality using the Android NDK. There's a lot of documentation out there on how to work with the NDK. Basically...