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Default value of a type at Runtime [duplicate]
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@Gabor Actually in this case what's going on is that Activator.CreateInstance always returns a System.Object, so if you ask it to make an instance of a ValueType, it has to box it. Nullable<T> has special-casing in the runtime for boxing so that th...
Accessing inactive union member and undefined behavior?
...would also need to clarify (and the C Standard also needs to clarify, btw) what the unary & operator means when applied to a union member. I would think the resulting pointer should be usable to access the member at least until the next time the next direct or indirect use of any other member l...
How do I find the next commit in git? (child/children of ref)
ref^ refers to the commit before ref , what about getting the commit after ref ?
14 Answers
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Insert into … values ( SELECT … FROM … )
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what if, the where condition changed to table2.country and returns number of rows greater than one? I got similar issue here: stackoverflow.com/questions/36030370/…
– vijayrana
Mar 17 ...
Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...n explicitly suggests that SQL_CALC_FOUND_ROWS will be faster, I wonder in what situations (if any) it actually is faster!
– svidgen
Jan 9 '13 at 20:56
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Cannot create or edit Android Virtual Devices (AVD) from Eclipse, ADT 22.6
... start. I have 1024 MiB for internal storage and sdcard, and 1024 for RAM (what the units are I don't know—it doesn't say)
– MidnightJava
Mar 6 '14 at 19:33
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Read only file system on Android
...evice, in case someone got here with a similar issue in the emulator, with whatever tools are the latest as of Feb, 2017, the emulator needs to be launched from the command line with:
-writable-system
For anything to be writable to the /system. Without this flag no combination of remount or mount...
Replace non-ASCII characters with a single space
...interesting suggestion, but it assumes the user wishes non ascii to become what the rules for unidecode are. This however poses a follow up question to the asker about why they insist on spaces, to perhaps replace with another character?
– jxramos
Feb 18 '16 at...
Android: How do I prevent the soft keyboard from pushing my view up?
... want it to remain static where it is, and just have the keyboard cover up whatever it's going to cover up.
– Christopher Perry
Nov 17 '10 at 23:41
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Saving and loading objects and using pickle
...the file so that it will be read from the beginning again:
file.seek(0)
What you usually want to do though, is to use a context manager to open the file and read data from it. This way, the file will be automatically closed after the block finishes executing, which will also help you organize you...