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Detecting iOS / Android Operating system
...earch, and this question has come up, but not in the way I intend. I'm building a page for a client that is a QR code landing, which is a place to download an application. So he doesn't have to print out 2 QR codes on a page, I'd like to detect the current operating system (Apple/Android/Other[not...
How can I check if a directory exists in a Bash shell script?
...ommand can be used to check if a directory exists or not, within a Bash shell script?
35 Answers
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How do browsers pause/change Javascript when tab or window is not active?
Background: I'm doing some user interface tests that need to detect if people are paying attention or not. But, this question is not about the page visibility API .
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Is Meyers' implementation of the Singleton pattern thread safe?
Is the following implementation, using lazy initialization, of Singleton (Meyers' Singleton) thread safe?
6 Answers
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Python: split a list based on a condition?
What's the best way, both aesthetically and from a performance perspective, to split a list of items into multiple lists based on a conditional? The equivalent of:
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Secondary axis with twinx(): how to add to legend?
...is..
ax1.legend(loc = (.75,.1), frameon = False)
ax2.legend( loc = (.75, .05), frameon = False)
Where the loc tuple is left-to-right and bottom-to-top percentages that represent the location in the chart.
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node and Error: EMFILE, too many open files
For some days I have searched for a working solution to an error
17 Answers
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How to check permissions of a specific directory?
I know that using ls -l "directory/directory/filename" tells me the permissions of a file. How do I do the same on a directory?
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SQL select join: is it possible to prefix all columns as 'prefix.*'?
...post_author] => 2
[venues.post_date] => 2012-01-16 20:12:05
[venues.post_date_gmt] => 2012-01-16 20:12:05
[venues.post_content] => Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliq...
How to structure a express.js application?
Is there a common convention for breaking up and modularizing the app.js file in an Express.js application? Or is it common to keep everything in a single file?
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