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What is the difference between synchronous and asynchronous programming (in node.js)
...i-core?) and the operating system. See en.wikipedia.org/wiki/Multithreading_(software)#Multithreading
– related
Feb 17 '14 at 10:02
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A regex to match a substring that isn't followed by a certain other substring
...-------------
\w+ word characters (a-z, A-Z, 0-9, _) (1 or
more times (matching the most amount
possible))
--------------------------------------------------------------------------------
) en...
How to sort an array in descending order in Ruby
... { ary.sort{ |a,b| a[:bar] <=> b[:bar] }.reverse } }
x.report("sort_by -a[:bar]") { n.times { ary.sort_by{ |a| -a[:bar] } } }
x.report("sort_by a[:bar]*-1") { n.times { ary.sort_by{ |a| a[:bar]*-1 } } }
x.report("sort_by.reverse!") { n.times { ary.sort_by{ |a| a[:bar] }.reverse } }
e...
How to detect if JavaScript is disabled?
...d" cookie flag, etc..
</script>
<noscript>
<a href="next_page.php?nojs=1">Next Page</a>
</noscript>
Users without js will get the next_page link - you can add parameters here so that you know on the next page whether they've come via a JS/non-JS link, or attempt t...
When to encode space to plus (+) or %20?
... FYI: Rails also decodes spaces in with + by default ({ foo: 'bar bar'}.to_query => foo=bar+bar)
– wrtsprt
Nov 9 '15 at 15:00
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show 7 m...
dynamic_cast and static_cast in C++
I am quite confused with the dynamic_cast keyword in C++.
10 Answers
10
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Pip freeze vs. pip list
...packages shown in pip list but not pip freeze are setuptools (which is easy_install) and pip itself.
It looks like pip freeze just doesn't list packages that pip itself depends on. You may use the --all flag to show also those packages.
From the documentation:
--all
Do not skip these pa...
Visualizing branch topology in Git
...rentheses— e.g. in the lg1 & lg2 screenshots you can see (origin/test_on_10.8) showing the remote branch, and in the lg2 screenshot you can see (HEAD -> master, origin/master, origin/HEAD) showing both local and remote positions of the master branch and HEAD. This matches what popular bran...
Changing the status bar text color in splash screen iOS 7
..., UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
UIApplication.shared.statusBarView?.backgroundColor = UIColor.red
return true
...
How do you prevent IDisposable from spreading to all your classes?
...t disposable),
// as long as you take control of its lifecycle
_waitHandle = waitHandle;
OtherMethodThatUsesTheWaitHandleFromTheField();
}
}
}
The scope of the wait handle is limited to the Tiemethod, and the class doesn't need to have a disposable field, and so won't n...