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How to append to a file in Node?
...string to a log file. However writeFile will erase the content each time before writing the string.
18 Answers
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Using JQuery to check if no radio button in a group has been checked
...has been checked, so that I can give the users an javascript error if they forgot to check a option.
8 Answers
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Can I use non existing CSS classes?
...sn't necessarily mean that you need to have a class declared in the HTML before you can use it in CSS either. See ruakh's comment. Whether or not a selector is valid depends entirely on the selector syntax, and CSS has its own set of rules for handling parsing errors, none of which concern the marku...
Explain Python entry points?
... sys.argv[1:]
if len(args) < 1:
print "usage: ..."
and so forth; it should assume that it's been called from the command line, parse the arguments that the user has provided, and ... well, do whatever the command is designed to do.
Install the docutils package for a great example o...
Remove CSS class from element with JavaScript (no jQuery) [duplicate]
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FWIW, this works for me on FF 7.0.1, and Chromium 16.0.910.0
– SW.
Oct 19 '11 at 1:38
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How do I expire a PHP session after 30 minutes?
I need to keep a session alive for 30 minutes and then destroy it.
15 Answers
15
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What is Normalisation (or Normalization)?
...ata corruption.
There is a number of normalization levels from 1. normal form through 5. normal form. Each normal form describes how to get rid of some specific problem, usually related to redundancy.
Some typical normalization errors:
(1) Having more than one value in a cell. Example:
UserId |...
Download file from an ASP.NET Web API method using AngularJS
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Support for downloading binary files in using ajax is not great, it is very much still under development as working drafts.
Simple download method:
You can have the browser download the requested file simply by using the code belo...
MySQL - ORDER BY values within IN()
...st string in the remaining list of strings.
However, it is much better performance-wise to have an indexed column that represents your sort order, and then sort by this column.
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Asynchronous shell exec in PHP
...w to complete, so I don't want to slow down the PHP request while it waits for a reply. In fact, the PHP request should be able to exit without terminating the shell process.
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