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Create a “with” block on several context managers? [duplicate]
... same as normally using nested with, because A(), B(), and C() will all be called initially, before entering the context managers. This will not work correctly if one of these functions raises an exception.
contextlib.nested is deprecated in newer Python versions in favor of the above methods.
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Repeat string to certain length
...t that need to be // in Python 3? Or dropping the +1 and using an explicit call to a ceiling function would suffice. Also, a note: the string generated actually has an extra repetition when it divides evenly; the extra gets cut off by the splice. That confused me at first.
– jp...
How to test android referral tracking?
...-13 17:28:08.335: D/Collectionista FacadeBroadcastReceiver(8525): Receiver called
05-13 17:28:08.335: V/Collectionista FacadeBroadcastReceiver(8525): Receiver called with action: com.android.vending.INSTALL_REFERRER
05-13 17:28:08.365: D/GoogleAnalyticsTracker(8525): Stored referrer:utmcsr=test_sour...
Performance difference between IIf() and If
... "Hello")
' Usage 2
Dim foo = If(result, "Alternative")
The first is basically C#'s ternary conditional operator and the second is its coalesce operator (return result unless it’s Nothing, in which case return "Alternative"). If has thus replaced IIf and the latter is obsolete.
Like in C#, VB's...
os.walk without digging into directories below
... with some unwanted '[None]' messages printed. So, why del dirs[:] specifically?
– Zach Young
Oct 12 '12 at 0:53
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Download data url file
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yes. you can simply call a.click() after you have created element 'a', and then set a's href.
– user1709076
Jan 17 '19 at 13:21
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Make Visual Studio understand CamelCase when hitting Ctrl and cursor keys
... that I can configure Visual Studio 2008 to understand CamelCase? Specifically, I'd like to be able to get Ctrl + right or left cursor to take me to a subsection of a variable or type name.
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PHP how to get local IP of system
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This is the solution that worked for me and that avoids calling shells, operating system commands and all sorts of stuff that can open security holes or raise odd issues later.
– Dario Fumagalli
Jul 17 '14 at 10:59
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How to get back to most recent version in Git?
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@Nathan: Exactly. HEAD is something called a symbolic ref - it's in general a pointer to another ref (the currently checked out branch). git checkout is a way to move HEAD around. When you detached HEAD, you made it point straight to that given commit; when you...
WCF vs ASP.NET Web API [closed]
...was to create a single architecture (ABC) around both these very different calls and handle the plumbing via configuration files.
– Scott Marcus
Nov 30 '15 at 14:52
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