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Hex representation of a color with alpha channel?
...255, 0, 0, 0.5) would be 50% transparent red. RGB channels are 0-255 or 0%-100%, alpha is 0-1.
In CSS 4*, you can specify the alpha channel using the 7th and 8th characters of an 8 digit hex colour, or 4th character of a 4 digit hex colour (see CSS Level 4 spec*)
As of May 2019, >80% of users c...
Data structure for loaded dice?
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119
You are looking for the alias method which provides a O(1) method for generating a fixed discr...
How can I sharpen an image in OpenCV?
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163
One general procedure is laid out in the Wikipedia article on unsharp masking:
You use a Gauss...
In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
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106
A simple approach would be to check how many digits are output by Integer.toHexString() and ad...
How to capitalize the first letter of word in a string using Java?
... named input and leave the rest alone:
String output = input.substring(0, 1).toUpperCase() + input.substring(1);
Now output will have what you want. Check that your input is at least one character long before using this, otherwise you'll get an exception.
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Check if a string contains one of 10 characters
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213
The following would be the simplest method, in my view:
var match = str.IndexOfAny(new char[] ...
Decimal separator comma (',') with numberDecimal inputType in EditText
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105
A workaround (until Google fix this bug) is to use an EditText with android:inputType="numberD...
Select random lines from a file
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edited Jun 16 '16 at 20:48
DomainsFeatured
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Checking to see if one array's elements are in another array in PHP
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edited Mar 27 '14 at 15:00
Amal Murali
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