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Why does HTML think “chucknorris” is a color?
...om the blog post, we get the following:
Replace all nonvalid hexadecimal characters with 0's
chucknorris becomes c00c0000000
Pad out to the next total number of characters divisible by 3 (11 -> 12)
c00c 0000 0000
Split into three equal groups, with each component representing the correspond...
String.equals versus == [duplicate]
...ject, but it would be equally valid to replace "Hello" with new String(new char[] {'H', 'e', ...})
– parasietje
Sep 19 '13 at 9:46
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jQuery: what is the best way to restrict “number”-only input for textboxes? (allow decimal points)
...'');
});
This immediately lets the user know that they can't enter alpha characters, etc. rather than later during the validation phase.
You'll still want to validate because the input might be filled in by cutting and pasting with the mouse or possibly by a form autocompleter that may not trigg...
Regular expression for a string containing one word but not another
...ng it checks the string does not contain "details.cfm" (with any number of characters before it).
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Unicode characters in URLs
In 2010, would you serve URLs containing UTF-8 characters in a large web portal?
7 Answers
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When should null values of Boolean be used?
..."boolean", not "boolean" (mind styling), because in Oracle you usually use char(1) null with 'T' and 'F' values. So it may (with e.g., Hibernate type adapter) be null :)
– Grzegorz Grzybek
Jun 25 '12 at 7:58
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Acronyms in CamelCase [closed]
...n using acronyms, use Pascal case or camel case for acronyms more than two characters long. For example, use HtmlButton or htmlButton. However, you should capitalize acronyms that consist of only two characters, such as System.IO instead of System.Io.
Do not use abbreviations in identifiers or ...
What is the difference between string primitives and String objects in JavaScript?
...plains the much faster random access speed.
So what happens when you do s.charAt(i) for instance?
Since s is not an instance of String, JavaScript will auto-box s, which has typeof string to its wrapper type, String, with typeof object or more precisely s.valueOf(s).prototype.toString.call = [obje...
Calculating distance between two points, using latitude longitude?
...rivate double distance(double lat1, double lon1, double lat2, double lon2, char unit) {
double theta = lon1 - lon2;
double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(deg2rad(theta));
dist = Math.acos(dist)...
What are the underlying data structures used for Redis?
... are called Simple Dynamic Strings, or SDS. It's a smallish wrapper over a char * that allows you to store the length of the string and number of free bytes as a prefix.
Because the length of the string is stored, strlen is an O(1) operation. Also, because the length is known, Redis strings are bin...