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Define: What is a HashSet?
HashSet
The C# HashSet data structure was introduced in the .NET Framework 3.5. A full list of the implemented members can be found at the HashSet MSDN page.
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PHP script to loop through all of the files in a directory?
I'm looking for a PHP script that loops through all of the files in a directory so I can do things with the filename, such as format, print or add it to a link. I'd like to be able to sort the files by name, type or by date created/added/modified. (Think fancy directory "index".) I'd also like to be...
Change default text in input type=“file”?
I want to change default text on button that is " Choose File " when we use input="file" .
18 Answers
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Getting the array length of a 2D array in Java
I need to get the length of a 2D array for both the row and column. I’ve successfully done this, using the following code:
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LAST_INSERT_ID() MySQL
I have a MySQL question that I think must be quite easy. I need to return the LAST INSERTED ID from table1 when I run the following MySql query:
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open read and close a file in 1 line of code
Now I use:
11 Answers
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File size exceeds configured limit (2560000), code insight features not available
I am trying to work on a large Javascript file in Jetbrains WebStorm 8 and I am getting a message at the top of the editing window that says:
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Is there a pretty print for PHP?
I'm fixing some PHP scripts and I'm missing ruby's pretty printer. i.e.
31 Answers
31
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Why historically do people use 255 not 256 for database field magnitudes?
You often see database fields set to have a magnitude of 255 characters, what is the traditional / historic reason why? I assume it's something to do with paging / memory limits, and performance but the distinction between 255 and 256 has always confused me.
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How to diff one file to an arbitrary version in Git?
How can I diff a file, say pom.xml , from the master branch to an arbitrary older version in Git?
13 Answers
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