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What reason is there to use null instead of undefined in JavaScript?
I've been writing JavaScript for quite a long time now, and I have never had a reason to use null . It seems that undefined is always preferable and serves the same purpose programmatically. What are some practical reasons to use null instead of undefined ?
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How to make a Python script run like a service or daemon in Linux
I have written a Python script that checks a certain e-mail address and passes new e-mails to an external program. How can I get this script to execute 24/7, such as turning it into daemon or service in Linux. Would I also need a loop that never ends in the program, or can it be done by just havin...
How to print last two columns using awk
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Try and see. It does work Solaris 9 awk & nawk. The alternative is $(NF-1)
– jim mcnamara
Nov 29 '10 at 15:04
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CSS: Control space between bullet and
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@Wolle Hmmm. It's an old comment, and I'm not sure of the concern -- If it's as to whether <SPAN> can utilize id or class tags, take a look at W3C. If the question is whether it can convey semantic meaning, see this answer. Technically, the <SPAN>...
Create an index on a huge MySQL production table without table locking
...ed to create an index on a ~5M rows MySQL table. It is a production table, and I fear a complete block of everything if I run a CREATE INDEX statement...
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what is the difference between XSD and WSDL
What is the difference between an XML Schema and WSDL ?
8 Answers
8
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How do I declare and initialize an array in Java?
How do I declare and initialize an array in Java?
28 Answers
28
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Cycles in family tree software
I am the developer of some family tree software (written in C++ and Qt). I had no problems until one of my customers mailed me a bug report. The problem is that the customer has two children with their own daughter, and, as a result, he can't use my software because of errors.
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Does Swift have documentation generation support?
...ocumentation in Quick Help (both in the popover when ⌥-clicking symbols, and in the Quick Help Inspector ⌥⌘2).
Symbol documentation comments are now based on the same Markdown syntax used by rich playground comments, so a lot of what you can do in playgrounds can now be used directly in sourc...
Unable to set data attribute using jQuery Data() API
...ata- attributes are pulled in the first time the data property is accessed and then are no longer accessed or mutated (all data values are then stored internally in jQuery)
This was also covered on Why don't changes to jQuery $.fn.data() update the corresponding html 5 data-* attributes?
The demo...