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How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
...o, node_redis and last but not least the sample code from media fire.
Install node.js+npm(as non root)
First you should(if you have not done this yet) install node.js+npm in 30 seconds (the right way because you should NOT run npm as root):
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bas...
What is the best way to insert source code examples into a Microsoft Word document?
...bsolutely hate and despise working for free for Microsoft, given how after all those billions of dollars they STILL do not to have proper guides about stuff like this with screenshots on their damn website.
Anyways, here is a quick guide in Word 2010, using Notepad++ for syntax coloring, and a Tex...
What is the best method of handling currency/money?
... price calculation.
If you insist on using integers, you will have to manually convert to and from BigDecimals everywhere, which will probably just become a pain.
As pointed out by mcl, to print the price, use:
number_to_currency(price, :unit => "€")
#=> €1,234.01
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Regex empty string or email
...hing an email address (that is, if you want wrong code that happens to (usually) work), use the regular-expressions.info link someone else submitted.
As for the empty string, ^$ is mentioned by multiple people and will work fine.
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Given two directory trees, how can I find out which files differ by content?
If I want find the differences between two directory trees, I usually just execute:
10 Answers
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Multiple inheritance for an anonymous class
... aspiring_sarge
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answered May 1 '11 at 13:04
skaffmanskaffman
374k9292 gold ...
is it possible to update UIButton title/text programmatically?
...to update the title/text of the UIButton to reflect the new state. I'm calling:
12 Answers
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What is the best way to auto-generate INSERT statements for a SQL Server table?
... table.
This is a quick run through to generate the INSERT statements for all of the data in your table, using no scripts or add-ins to SQL Management Studio 2008:
Right-click on the database and go to Tasks > Generate Scripts.
Select the tables (or objects) that you want to generate the scrip...
get UTC time in PHP
...i: a Unix timestamp is by definition always UTC. en.wikipedia.org/wiki/Unix_time
– nikc.org
Jul 20 '15 at 8:20
1
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get dictionary value by key
...
It's as simple as this:
String xmlfile = Data_Array["XML_File"];
Note that if the dictionary doesn't have a key that equals "XML_File", that code will throw an exception. If you want to check first, you can use TryGetValue like this:
string xmlfile;
if (!Data_Array.T...