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Converting RGB to grayscale/intensity
...computer screen
under normal lighting conditions -- try it.
Here are some more links on color in general:
Wikipedia Luma
Bruce Lindbloom 's outstanding web site
chapter 4 on Color in the book by Colin Ware, "Information Visualization", isbn 1-55860-819-2;
this long link to Ware in books.google...
Safely casting long to int in Java
... value.");
}
return (int) l;
}
I think that expresses the intent more clearly than the repeated casting... but it's somewhat subjective.
Note of potential interest - in C# it would just be:
return checked ((int) l);
...
Using jQuery to center a DIV on the screen
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What does 'useLegacyV2RuntimeActivationPolicy' do in the .NET 4 config?
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After a bit of time (and more searching), I found this blog entry by Jomo Fisher.
One of the recent problems we’ve seen is that, because of the support for side-by-side runtimes, .NET 4.0 has changed the way that it binds to older mixed-mode assem...
Android Studio marks R in red with error message “cannot resolve symbol R”, but build succeeds
...do this thing but Android Studio is notorious on its build. Mine will take more than 30 minutes if I did this.
– Neon Warge
Aug 1 '16 at 9:26
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Change the selected value of a drop-down list with jQuery
...ting the selected value. In this case it is setting the selected value, or more accurately, setting the selected option.
– Jon P
Aug 22 '12 at 0:41
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Build unsigned APK file with Android Studio
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Evenly space multiple views within a container view
...en add top and bottom constraints to the labels (see the screenshot).
More specifically, I have a top constraint on 'Spacer View 1' to superview with a height constraint of lower priority than 1000 and with Height Equals to all of the other 'spacer views'. 'Spacer View 4' has a bottom space con...
PostgreSQL LIKE query performance variations
... Typically no big loss, since 1- or 2-letter strings are hardly selective (more than a few percent of the underlying table matches) and index support would not improve performance to begin with, because a full table scan is faster.
text_pattern_ops for prefix matching
For just left-anchored patt...