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How to override to_json in Rails?
...e creation of the json should be separate from the rendering of the json.
Now, anytime to_json is called on an object, as_json is invoked to create the data structure, and then that hash is encoded as a JSON string using ActiveSupport::json.encode. This happens for all types: object, numeric, date,...
Mounting multiple volumes on a docker container?
I know I can mount a directory in my host on my container using something like
5 Answers
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What is the difference between a definition and a declaration?
...ng that's been declared and referenced somewhere, then the linker doesn't know what to link references to and complains about a missing symbols. If you define something more than once, then the linker doesn't know which of the definitions to link references to and complains about duplicated symbols....
How to convert a factor to integer\numeric without loss of information?
...I have an warning msg: Warning message:NAs introduced by coercion. Do you know where the problem could be? thank you !
– maycca
Apr 13 '16 at 21:23
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Why are ToLookup and GroupBy different?
...different. Calling ToLookup means I want a cache of the entire thing right now organized by group. Calling GroupBy means "I am building an object to represent the question 'what would these things look like if I organized them by group?'"
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Multiple HttpPost method in Web API controller
...Parameter.Optional }
);
it's not a RESTful approach anymore, but you can now call your actions by name (rather than let the Web API automatically determine one for you based on the verb) like this:
[POST] /api/VTRouting/TSPRoute
[POST] /api/VTRouting/Route
Contrary to popular belief, there is ...
Round to at most 2 decimal places (only if necessary)
... You've 'solved' the 1.005 'problem', but introduced a new one: now, in the Chrome console, roundToTwo(1.0049999999999999) comes out as 1.01 (inevitably, since 1.0049999999999999 == 1.005). It seems to me that the float you get if you type num = 1.005 'obviously' 'should' round to 1.00, b...
Can I find out the return value before returning while debugging in Intellij?
...ere is a much better way. See answer from Birchlabs for details. It should now be the accepted answer.
– Mikezx6r
Nov 4 '19 at 13:15
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Difference: std::runtime_error vs std::exception()
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@rubenvb I did not know about that, but I think it will clearify the code for future maintenance if only objects of classes derived from exception are thrown. Example: I like to find out what custom exceptions are implemented in my code base and...
Rails where condition using NOT NIL
...aving, this is just a tiny facet. But of course a general case is good to know.
– Adam Lassek
Jul 26 '11 at 22:26
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