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What are the options for storing hierarchical data in a relational database? [closed]
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My favorite answer is as what the first sentence in this thread suggested. Use an Adjacency List to maintain the hierarchy and use Nested Sets to query the hierarchy.
The problem up until now has been that the coversion method from an Adjacec...
Difference between require, include, require_once and include_once?
... vs. include?
When should I use require_once vs. require
The answer to 1 is described here.
The require() function is identical to include(), except that it handles errors differently. If an error occurs, the include() function generates a warning, but the script will continue execution. The r...
Set cookie and get cookie with JavaScript [duplicate]
...kie depending on which CSS file I choose in my HTML. I have a form with a list of options, and different CSS files as values. When I choose a file, it should be saved to a cookie for about a week. The next time you open your HTML file, it should be the previous file you've chosen.
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How to check if a string contains only digits in Java [duplicate]
In Java for String class there is a method called matches, how to use this method to check if my string is having only digits using regular expression. I tried with below examples, but both of them returned me false as result.
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Double decimal formatting in Java
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edited Oct 9 '12 at 18:47
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How does Trello access the user's clipboard?
When you hover over a card in Trello and press Ctrl + C , the URL of this card is copied to the clipboard. How do they do this?
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Does SVG support embedding of bitmap images?
Is an SVG image purely vectorial or can we combine bitmap images into an SVG image ?
How about transforms applied on the bitmap images (perspective, mappings, etc.) ?
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What's a good (free) visual merge tool for Git? (on windows) [closed]
...n Windows, a good 3-way diff/merge tool remains kdiff3 (WinMerge, for now, is still 2-way based, pending WinMerge3)
See "How do you merge in GIT on Windows?" and this config.
Update 7 years later (Aug. 2018): Artur Kędzior mentions in the comments:
If you guys happen to use Visual Studio (Comm...
What is the actual use of Class.forName(“oracle.jdbc.driver.OracleDriver”) while connecting to a dat
...ms of connecting to a database, aside from ensure that the specified class is loaded by the current classloader. There is no fundamental difference between writing
Class<?> driverClass = Class.forName("oracle.jdbc.driver.OracleDriver");
// and
Class<?> stringClass = Class.forName("java.l...
Windows path in Python
What is the best way to represent a Windows directory, for example "C:\meshes\as" ? I have been trying to modify a script but it never works because I can't seem to get the directory right, I assume because of the '\' acting as escape character?
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