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How do you add swap to an EC2 instance?
...e instance.
Paging works by creating an area on your hard drive and using it for extra memory, this memory is much slower than normal memory however much more of it is available.
To add this extra space to your instance you type:
sudo /bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
sudo /sbi...
Prevent double submission of forms in jQuery
I have a form that takes a little while for the server to process. I need to ensure that the user waits and does not attempt to resubmit the form by clicking the button again. I tried using the following jQuery code:
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Javascript communication between browser tabs/windows [duplicate]
... Tab 2 starts audio playback, Tab 1 somehow knows about this and can pause it's player.
10 Answers
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Regular expression for matching latitude/longitude coordinates?
I'm trying to create a regular expression for matching latitude/longitude coordinates. For matching a double-precision number I've used (\-?\d+(\.\d+)?) , and tried to combine that into a single expression:
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Select all contents of textbox when it receives focus (Vanilla JS or jQuery)
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edited Jul 15 '11 at 18:06
answered Jan 26 '09 at 18:06
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How to pass arguments and redirect stdin from a file to program run in gdb?
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Pass the arguments to the run command from within gdb.
$ gdb ./a.out
(gdb) r < t
Starting program: /dir/a.out < t
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What is the difference between server side cookie and client side cookie?
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HTTP COOKIES
Cookies are key/value pairs used by websites to store state information on the browser.
Say you have a website (example.com), when the browser requests a webpage the website can send cookies to store information on the browser.
Browser request example:
GET /index...
How to enumerate an object's properties in Python?
I C# we do it through reflection. In Javascript it is simple as:
7 Answers
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What can be the reasons of connection refused errors?
I'm trying to write a server program in C,
using another client, I get this error when I try to connect through port 2080 for example.
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How do you convert a JavaScript date to UTC?
Suppose a user of your website enters a date range.
29 Answers
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