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How does the HyperLogLog algorithm work?
I've been learning about different algorithms in my spare time recently, and one that I came across which appears to be very interesting is called the HyperLogLog algorithm - which estimates how many unique items are in a list.
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
How would it be possible to generate a random, unique string using numbers and letters for use in a verify link? Like when you create an account on a website, and it sends you an email with a link, and you have to click that link in order to verify your account
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Coalesce function for PHP?
Many programming languages have a coalesce function (returns the first non-NULL value, example ). PHP, sadly in 2009, does not.
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Use dynamic (variable) string as regex pattern in JavaScript
I want to add a (variable) tag to values with regex, the pattern works fine with PHP but I have troubles implementing it into JavaScript.
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How do I split a multi-line string into multiple lines?
I have a multi-line string literal that I want to do an operation on each line, like so:
6 Answers
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Converting Symbols, Accent Letters to English Alphabet
The problem is that, as you know, there are thousands of characters in the Unicode chart and I want to convert all the similar characters to the letters which are in English alphabet.
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Custom ListView click issue on items in Android
...ed on top of each other, plus a horizontal progress bar that I want to remain hidden until I actually do something. To the far right is a checkbox that I only want to display when the user needs to download updates to their database(s). When I disable the checkbox by setting the visibility to Visibi...
Returning null as an int permitted with ternary operator but not if statement
Let's look at the simple Java code in the following snippet:
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What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
I was going through the release notes for Xcode 4.4 and noticed this:
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What is the difference between class and instance attributes?
Is there any meaningful distinction between:
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