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How do I get the current absolute URL in Ruby on Rails?
...Rails 2:
You can write request.url instead of request.request_uri. This combines the protocol (usually http://) with the host, and request_uri to give you the full address.
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Difference between subprocess.Popen and os.system
...en("mycmd" + " myarg", shell=True).wait()
The "improved" code looks more complicated, but it's better because once you know subprocess.Popen(), you don't need anything else. subprocess.Popen() replaces several other tools (os.system() is just one of those) that were scattered throughout three othe...
Filter LogCat to get only the messages from My Application in Android?
...or-<emulator number> (eg, -s emulator-5558)
Example: adb -d logcat com.example.example:I *:S
Or if you are using System.out.print to send messages to the log you can use adb -d logcat System.out:I *:S to show only calls to System.out.
You can find all the log levels and more info here: htt...
Why doesn't println! work in Rust unit tests?
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Should I declare Jackson's ObjectMapper as a static field?
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Yes, that is safe and recommended.
The only caveat from the page you referred is that you can't be modifying configuration of the mapper once it is shared; but you are not changing configuration so that is fine. If you did need to change configurat...
How to clear Facebook Sharer cache?
...ion to my problem. You could go to this site:
https://developers.facebook.com/tools/debug
...then put in the URL of the page you want to share, and click "debug". It will automatically extract all the info on your meta tags and also clear the cache.
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Python script to copy text to clipboard [duplicate]
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.copy seems to be the offical one. github.com/asweigart/pyperclip
– fnkr
Oct 17 '14 at 19:50
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Take a full page screenshot with Firefox on the command-line
... newer:
press Ctrl+Shift+K to open the developer console (⌥ Option+⌘ Command+K on macOS)
type :screenshot or :screenshot --fullpage
Find out more regarding screenshots and other features
For Firefox versions < 60:
Press Shift+F2 or go to Tools > Web Developer > Developer Toolb...
What does [STAThread] do?
...readAttribute is essentially a requirement for the Windows message pump to communicate with COM components. Although core Windows Forms does not use COM, many components of the OS such as system dialogs do use this technology.
MSDN explains the reason in slightly more detail:
STAThreadAttribute...
Python 3 ImportError: No module named 'ConfigParser'
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In Python 3, ConfigParser has been renamed to configparser for PEP 8 compliance. It looks like the package you are installing does not support Python 3.
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