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Removing all empty elements from a hash / YAML?
...e here for the benchmark.
In case you want to backport it to your Rails 3 app:
# config/initializers/rails4_backports.rb
class Hash
# as implemented in Rails 4
# File activesupport/lib/active_support/core_ext/hash/compact.rb, line 8
def compact
self.select { |_, value| !value.nil? }
e...
href image link download on click
..."/path/to/image"><img src="/path/to/image" /></a> in a web app.
10 Answers
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List all files and directories in a directory + subdirectories
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it means that in your system this app hasn't got enough permissions
– Ruslan F.
Sep 8 '12 at 16:44
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Check if a subview is in a view
I'm making an app where I add a subview to a view using addSubview: on an IBAction . In the same way, when the button with that IBAction is touched again should call removeFromSuperview on that subview added on that IBAction :
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How can I force a hard reload in Chrome for Android
...ear cache in incognito mode only the first time. After that the same issue appears
– Mara
Jun 2 '18 at 10:00
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Keyboard shortcuts with jQuery
... special keys like shift,ctrl,alt,...) but I'm having troubles with basic mapping 0-9 and a-z).
– Martin
Dec 19 '13 at 12:16
1
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How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?
As I want to use Google maps in my application, I need the debug certificates' MD5 fingerprint. I tried following.:
10 Ans...
symbol(s) not found for architecture i386
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If you get this sort of thing appearing suddenly, it usually means the project is missing some frameworks it needs. Libraries and dependent projects can require frameworks, so if you've added one recently then that can cause this error.
To add frameworks...
How to include JavaScript file or library in Chrome console?
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appendChild() is a more native way:
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'script.js';
document.head.appendChild(script);
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Chrome can't load web worker
...ile-access-from-files flag when you launch Chrome.
Example for MacOsX :
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --allow-file-access-from-files
More info : Web worker settings for chrome
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