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What does the exclamation mark do before the function?
...ould seem to warrant. The unary operator ! (also ~, - and +) disambiguates from a function declaration, and allows the parens at the end () to invoke the function in-place. This is often done to create a local scope / namespace for variables when writing modular code.
– Tom Aug...
Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar
...
I used the following psd that I derived from http://www.teehanlax.com/blog/?p=447
http://www.chrisandtennille.com/pictures/backbutton.psd
I then just created a custom UIView that I use in the customView property of the toolbar item.
Works well for me.
Edit: A...
Difference between SPI and API?
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From Effective Java, 2nd Edition:
A service provider framework is a
system in which multiple service
providers implement a service, and the
system makes the implementations
available to its clients, decoupling
t...
Where to place JavaScript in an HTML file?
...ation, using a service like Amazon's S3 service may help users download it from a server physically closer to them than your server.
Is your js script a commonly used lib like jQuery or prototype? If so, there are a number of companies, like Google and Yahoo, that have tools to provide these files ...
Colors with unix command “watch”?
..... | tee will remove color codes like watch do and doesn't prevent command from flickering
– theist
May 31 '17 at 9:03
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Benefits of EBS vs. instance-store (and vice-versa) [closed]
I'm unclear as to what benefits I get from EBS vs. instance-store for my instances on Amazon EC2. If anything, it seems that EBS is way more useful (stop, start, persist + better speed) at relatively little difference in cost...? Also, is there any metric as to whether more people are using EBS now ...
Skip certain tables with mysqldump
Is there a way to restrict certain tables from the mysqldump command?
10 Answers
10
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How do I invert BooleanToVisibilityConverter?
... In their documentation they say you can use their MapConverter to convert from Visibility enumeration to bool
<Label>
<Label.Visible>
<Binding Path="IsVisible">
<Binding.Converter>
<con:MapConverter>
<con:...
Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)
...ort to a fixed number. Heroku adds the port to the env, so you can pull it from there. Switch your listen to this:
.listen(process.env.PORT || 5000)
That way it'll still listen to port 5000 when you test locally, but it will also work on Heroku.
You can check out the Heroku docs on Node.js here....
Test if executable exists in Python?
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example usage: from distutils import spawn php_path = spawn.find_executable("php")
– codefreak
Dec 3 '13 at 17:17
6
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