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Numpy array assignment with copy
....g. A = np.array([[1,2,3],[4,5]]); B = np.array([None,None], dtype='O'). Now try B[:] = A; B[0][0]=99, this will change the first element in both A and B! To my knowledge, there is no other way to guarantee a deep copy, even of a numpy-array, than copy.deepcopy
– Rolf Barts...
How to Deal with Temporary NSManagedObject instances?
...e Apple have updated CoreDataBooks, indeed it still uses two contexts, but now the 2nd context is a child of the first. This technique is discussed (and recommended) in WWDC 2011 presentation 303 (what's new in Core Data in iOS) and is mentioned here (with the much, MUCH, simpler code for merging ch...
Firefox Web Console Disabled?
...ug option drop down. This clears out all the firebug codes form your page. Now Use ctrl+shift+k to bring up Firefox console that displays your console logs.
– Clain Dsilva
Jul 20 '14 at 6:27
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Exclude all transitive dependencies of a single dependency
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I don't know how you were able to find this working, as Maven 3 explicitly warns about the use of asterisk: [WARNING] 'dependencies.dependency.exclusions.exclusion.groupId' for <artifcat_id> with value "*" does not match a vali...
Find size of object instance in bytes in c#
...undocumented hacks. Do not rely on this working - even if it works for you now, it may stop working tomorrow, with any minor or major .NET update.
You can use the information in this article on CLR internals MSDN Magazine Issue 2005 May - Drill Into .NET Framework Internals to See How the CLR Creat...
Collections.emptyMap() vs new HashMap()
...learly states that the map is initialized to an empty map.
In addition - knowing that this method returns an immutable map, it is now easier for me to find where fooBarMap is being assigned another nonempty value just by searching for /fooBarMap =/.
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Why use 'git rm' to remove a file instead of 'rm'?
... you may want to do a git stash, but I'm relatively new to git so I don't know the exact command. If you have come here in or after 2014, I hope this answer was useful to you.
– Eric Hepperle - CodeSlayer2010
Nov 24 '14 at 19:14
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Get margin of a View
....LayoutParams, but nothing like LayoutParams in itself. And since I don't know the type of the view, I cannot use any of the former classes.
– Arnab Chakraborty
Sep 19 '11 at 8:54
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How do I convert a NSString into a std::string?
...a few weeks I went around to expand my answer. I hope it's more acceptable now.
– JustSid
Mar 17 '16 at 20:00
@JustSid...
SQL update fields of one table from fields of another one
...ng the column names?
General solution with dynamic SQL
You don't need to know any column names except for some unique column(s) to join on (id in the example). Works reliably for any possible corner case I can think of.
This is specific to PostgreSQL. I am building dynamic code based on the the inf...