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Regular expression for a hexadecimal number?

..., depends on the flavor you need to use (php, javascript, python , golang, etc.). This answer was taken from:http://ult-tex.net/info/perl/ share | improve this answer | foll...
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Generate table relationship diagram from existing schema (SQL Server) [closed]

...tool shows tables and references orthogonal, hierarchical, in a circle ;-) etc. just by pressing one single button. I use the free version for years now. share | improve this answer | ...
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Google fonts URL break HTML5 Validation on w3.org

...e special characters would need to be encoded by HTML rules (e.g. &amp etc). The user agent is then expected to follow RFC 3987 and convert the IRI to percent encoded UTF-8 before submitting it over HTTP (tools.ietf.org/html/rfc3987). – Mikko Rantalainen O...
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Find if variable is divisible by 2

... There is so much that jQuery can do, like creating variables, functions, etc., that is still being done with raw JavaScript. Just unbelievable ;-) – Anurag May 13 '10 at 9:10 ...
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Error renaming a column in MySQL

... you lose all other column definitions such as nullability, default value, etc. (see: stackoverflow.com/questions/8553130/…). – Dejan Jul 13 '15 at 10:50 ...
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Wait one second in running program

... Personally I think Thread.Sleep is a poor implementation. It locks the UI etc. I personally like timer implementations since it waits then fires. Usage: DelayFactory.DelayAction(500, new Action(() => { this.RunAction(); })); //Note Forms.Timer and Timer() have similar implementations. p...
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What is the string concatenation operator in Oracle?

... I am confused - if by "logical operator" you mean operators like AND, NOT etc. then of course || is not a logical operator. But what does that have to due with 'x'||null returning x? n+null returns null, so is + a logical operator? – Tony Andrews Jul 20 '12 ...
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Eclipse “Server Locations” section disabled and need to change to use Tomcat installation

...ecent tool would figure out all this tinkering by itself, clean by itself, etc... yes I know it's a plugin but still.. – rapt Mar 18 '12 at 19:32 1 ...
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How to detect duplicate values in PHP array?

...utput Array ( [apple] => 2 [orange] => 1 [pear] => 2 etc... ) share | improve this answer | follow | ...
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Adding days to a date in Python

... relativedelta is especially useful when doing operations on month year etc. – forkadam Aug 20 at 4:11 ...