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Possible to do a MySQL foreign key to one of two possible tables?
...table.
Polymorphic Associations are supported by frameworks such as Rails and Hibernate. But they explicitly say that you must disable SQL constraints to use this feature. Instead, the application or framework must do equivalent work to ensure that the reference is satisfied. That is, the value ...
What is the easiest way to initialize a std::vector with hardcoded elements?
I can create an array and initialize it like this:
29 Answers
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Designing function f(f(n)) == -n
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Hmm, saving state with even and odd numbers, I should've thought of that.
– Unknown
Apr 8 '09 at 22:25
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Why does an image captured using camera intent gets rotated on some devices on Android?
I'm capturing an image and setting it to image view.
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Why use the params keyword?
...ly doing to make the best choice.
– Allen Clark Copeland Jr
Nov 28 '15 at 22:15
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How to retrieve all keys (or values) from a std::map and put them into a vector?
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Personally, I like the BOOST_FOREACH version because there is less typing and it is very explicit about what it is doing.
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How to map with index in Ruby?
What is the easiest way to convert
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How to delete a property from Google Analytics
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UPDATE/EDIT – December 5, 2014 : Converted this to community wiki… feel invited to edit and update.
UPDATE/EDIT – AUGUST 1, 2014
Google has done it again… they changed the design. But they also made things a bit simpler and more logic. Go to Admin...
HashMap and int as key
I am trying to build a HashMap which will have integer as keys and objects as values.
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Parsing command-line arguments in C?
... by word, or character by character in C. It has to be able to read in command line options -l -w -i or -- ...
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