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How to test chrome extensions?
...script and saves data using localstorage. Are there any tools, frameworks, etc. that I can use to test this behavior? I realize there are some generic tools for testing javascript, but are those sufficiently power to test an extension? Unit testing is most important, but I'm also interested in other...
Getting only Month and Year from SQL DATE
... want the result to be a date
- But you want to 'discard' the Days, Hours, etc
- Leaving a year/month only date field
SELECT
DATEADD(MONTH, DATEDIFF(MONTH, 0, <dateField>), 0) AS [year_month_date_field]
FROM
<your_table>
This gets the number of whole months from a base date (0...
How to get first 5 characters from string [duplicate]
...
For single-byte strings (e.g. US-ASCII, ISO 8859 family, etc.) use substr and for multi-byte strings (e.g. UTF-8, UTF-16, etc.) use mb_substr:
// singlebyte strings
$result = substr($myStr, 0, 5);
// multibyte strings
$result = mb_substr($myStr, 0, 5);
...
How to simulate Android killing my process
... is in the background and the OS decides it needs the resources (RAM, CPU, etc.). I need to be able to simulate this behaviour during testing so that I can ensure that my application is behaving correctly. I want to be able to do this in an automated way so that I can test if the application behaves...
Maximum concurrent Socket.IO connections
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For +300k concurrent connection:
Set these variables in /etc/sysctl.conf:
fs.file-max = 10000000
fs.nr_open = 10000000
Also, change these variables in /etc/security/limits.conf:
* soft nofile 10000000
* hard nofile 10000000
root soft nofile 10000000
root hard nofile 10000000
...
vim line numbers - how to have them on by default?
...
Terminal > su > password > vim /etc/vimrc
Click here and edit as in line number (13):
set nu
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How to enable cURL in PHP / XAMPP
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On Debian with Apache 2:
apt-get install php5-curl
/etc/init.d/apache2 restart
(php4-curl if it's php4)
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Android screen size HDPI, LDPI, MDPI [duplicate]
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320dp: a typical phone screen (240x320 ldpi, 320x480 mdpi, 480x800 hdpi, etc).
480dp: a tweener tablet like the Streak (480x800 mdpi).
600dp: a 7” tablet (600x1024 mdpi).
720dp: a 10” tablet (720x1280 mdpi, 800x1280 mdpi, etc).
...
Can someone give an example of cosine similarity, in a very simple, graphical way?
...to a document citing Paris and London three times each, but not Amsterdam, etc. As said, we can try and imagine the this fancy space for 10 or 100 cities. It's hard to draw, but easy to conceptualize.
I'll wrap up just by saying a few words about the formula itself. As I've said, other references p...
A type for Date only in C# - why is there no Date type?
...ample, do you consider today as "today at midnight"? "today at noon time"? etc. This problem is not well formulated. If you mean "today at midnight", you are already working with DateTime, not a Date. In order to subtract hours, you need an hour, not a day.
– xavier
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