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Extract numbers from a string
I want to extract the numbers from a string that contains numbers and letters like:
20 Answers
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Ruby 2.0.0p0 IRB warning: “DL is deprecated, please use Fiddle”
...l this sounds so unsatisfactory. Anyway, taking note of the comment below from Msangle, "What is fiddle?"
– will
Dec 14 '13 at 12:30
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Return value in a Bash function
...d be 34. Also, note that $(...) also captures stderr in addition to stdout from command specified.
– swoop81
Nov 27 '17 at 21:33
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“Origin null is not allowed by Access-Control-Allow-Origin” error for request made by application ru
I'm developing a page that pulls images from Flickr and Panoramio via jQuery's AJAX support.
17 Answers
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What does “@@ -1 +1 @@” mean in Git's diff output?
I've been collecting data from the information returned from
3 Answers
3
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How can I extract the folder path from file path in Python?
I would like to get just the folder path from the full path to a file.
6 Answers
6
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Powershell equivalent of bash ampersand (&) for forking/running background processes
... or a file that has an associated executable, use Start-Process (available from v2):
Start-Process -NoNewWindow ping google.com
You can also add this as a function in your profile:
function bg() {Start-Process -NoNewWindow @args}
and then the invocation becomes:
bg ping google.com
In my opi...
is there an easy way to get the http status code in the failure block from AFHTTPClient?
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In newer versions of AFNetworking, you can retrieve the response object from the error:
[[[error userInfo] objectForKey:AFNetworkingOperationFailingURLResponseErrorKey] statusCode]
This is handy if you're doing error handling further up the line and don't want to pass around the response objec...
How is std::function implemented?
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The implementation of std::function can differ from one implementation to another, but the core idea is that it uses type-erasure. While there are multiple ways of doing it, you can imagine a trivial (not optimal) solution could be like this (simplified for the specific c...
What does @synchronized() do as a singleton method in objective C?
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Edit: Adding some more information that wasn't in the original answer from 2011.
The @synchronized directive prevents multiple threads from entering any region of code that is protected by a @synchronized directive referring to the same object. The object passed to the @synchronized directive ...