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How to map and remove nil values in Ruby
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Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this exact purpose. It's idiomatic and performant, and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.ev...
How to create a temporary directory?
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@jbg yes, it seems odd to me now too - it shouldn't be a really big problem. I might have tweaked an old version of this script so that a path to temporary directory was calculated relatively to current directory, resulting in <s>extinction of mank...
How to wait for a BackgroundWorker to cancel?
...= "Rocket launch aborted.";
}
worker = null;
}
And all is good.
Now comes a situation where the caller needs to abort the countdown because they need to execute an emergency self-destruct of the rocket.
private void BlowUpRocket()
{
if (worker != null)
{
worker.CancelAsyn...
How to create abstract properties in python abstract classes
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Since Python 3.3 a bug was fixed meaning the property() decorator is now correctly identified as abstract when applied to an abstract method.
Note: Order matters, you have to use @property before @abstractmethod
Python 3.3+: (python docs):
class C(ABC):
@property
@abstractmethod
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Access Asset Catalog programmatically
I know it's a new feature and this may not be possible, but I would love to be able to use an Asset Catalog to organize my assets, but I access all of my images programmatically. How would I access my images, now? Do I still access them by their file names like so:
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How to search for a string in text files?
...eck for -1). I could swear it used to work with in as well... But it seems now that in only works for single characters...
– Steven
Mar 18 '13 at 11:34
6
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Execute command without keeping it in history [closed]
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But now this thread is a real mess! in this case, especially for such an old question, I believe it's better that you edit already existing good answers, and/or leave a comment…
– gniourf_gniourf
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Xcode 4: create IPA file instead of .xcarchive
...chive tango once again and go to the Organizer to select your new archive. Now, when clicking on the Share button, the .ipa option should be enabled.
I hope this helps.
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How do I import .sql files into SQLite 3?
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thanks It's working now. I missed out ; and included invalid chars like "-". Now it's fine.Thanks !!!
– webminal.org
Jan 13 '10 at 5:19
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delete map[key] in go?
...ven if the key is already absent from the map.
delete(timeZone, "PDT") // Now on Standard Time
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