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Formula to determine brightness of RGB color
...
Not correct. Before applying the linear transformation, one must first apply the inverse of the gamma function for the color space. Then after applying the linear function, the gamma function is applied.
– Jive Dadson
Nov 26 '...
Is there any “font smoothing” in Google Chrome?
...apply the next css property: -webkit-backface-visibility: hidden;
You can transform something like this:
To this:
(the font is Kreon)
Consider that when you are not putting that property, -webkit-backface-visibility: visible; is inherit
But be careful, that practice will not give always goo...
Linq: What is the difference between Select and Where
...; out
Select
returns something for all items in the source (projection / transformation). That something might be the items themselves, but are more usually a projection of some sort.
-> IEnumerable<A> in, IEnumerable<B> out
...
How to Publish Web with msbuild?
....exe: /p:Configuration=Debug
This will compile, package (with web.config transformation), and save the output as artifacts. The only thing missing is copying the output to a specified location, but that could be done either in another TeamCity build configuration with an artifact dependency or wit...
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
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The compiler can't generally transform
for (int c = 0; c < arraySize; ++c)
if (data[c] >= 128)
for (int i = 0; i < 100000; ++i)
sum += data[c];
into
for (int c = 0; c < arraySize; ++c)
if (data[c] >= 128)
...
Fast and Lean PDF Viewer for iPhone / iPad / iOS - tips and hints?
...ayer: (CALayer*)layer inContext: (CGContextRef) context is like :
CGAffineTransform currentCTM = CGContextGetCTM(context);
if (currentCTM.a == 1.0 && baseImage) {
//Calculate ideal scale
CGFloat scaleForWidth = baseImage.size.width/self.bounds.size.width;
CGFloat scaleForHei...
New line in JavaScript alert box
...rpret more escape sequences for special characters
escape sequences \n is transformed as 0x0A ASCII Escaped character and this character is not displayed in the alert box. The solution consists in to escape this special sequence:
$s = "Hello everybody \\n this is an alert box";
echo "<script>...
Count number of occurences for each unique value
...1,2, 2, 2), 25))
library("plyr")
data_frame <- ddply(data_frame, .(v), transform, n = length(v))
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String.IsNullOrWhiteSpace in LINQ Expression
...is processed by a LINQ provider to deliver an optimized query. During this transformation not all C# statements are supported, as it either is not possible to translate them to a back-end specific query (e.g. SQL) or because the implementer did not foresee the need for the statement.
In contrast I...
In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
... the declaration means __strong, implicitly:
NSError * e = nil;
Will be transformed to:
NSError * __strong error = nil;
When you call your save method:
- ( BOOL )save: ( NSError * __autoreleasing * );
The compiler will then have to create a temporary variable, set at __autoreleasing. So:
N...