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File upload progress bar with jQuery
...using AJAX. I also want to implement a file upload progress bar. How can I do this? Is there any way to calculate how much has already been uploaded so that I can calculate the percentage uploaded and create a progress bar?
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Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?
...kshop that simulates different disabilities/impairments to people. This is done via a website created especially for this presentation.
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Select N random elements from a List in C#
I need a quick algorithm to select 5 random elements from a generic list. For example, I'd like to get 5 random elements from a List<string> .
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Getting output of system() calls in Ruby
If I call a command using Kernel#system in Ruby, how do I get its output?
15 Answers
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Storing SHA1 hash values in MySQL
...the data stored, since you cannot use a zero byte to end the string as you do with varchar. That implies, but isn't stated in the manual, that you can store up to 2^(8*4) or 4+ gigabytes in a bytea. postgresql.org/docs/9.0/static/datatype-binary.html Storing the hash in a postgres database would pr...
How to get a list of installed android applications and pick one to run
...a in the ResolveInfo to start a application. You can check ResolveInfo javadoc here.
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JavaScript: Passing parameters to a callback function
...'m trying to pass some parameter to a function used as callback, how can I do that?
13 Answers
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Best practices/guidance for maintaining assembly version numbers
...or, minor, macro, micro. The way I look at a version number is to break it down into two parts. The first half describes the main version (Major) and any key updates (Minor). The second half indicates when it was built and what the source code version was. Version numbers also mean different things ...
PostgreSQL error: Fatal: role “username” does not exist
I'm setting up my PostgreSQL 9.1. I can't do anything with PostgreSQL: can't createdb , can't createuser ; all operations return the error message
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EC2 instance has no public DNS
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How does doing this effect the instances that already have a Public DNS?
– kraftydevil
Apr 6 '16 at 17:07
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