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How to override to_json in Rails?
...t::json.encode. This happens for all types: object, numeric, date, string, etc (see the ActiveSupport code).
ActiveRecord objects behave the same way. There is a default as_json implementation that creates a hash that includes all the model's attributes. You should override as_json in your Model to...
vector::at vs. vector::operator[]
...of use, flawed reasoning about the continued validity of some earlier test etc. kick in.
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Why isn't Python very good for functional programming? [closed]
...tic currying, make point-free style overly verbose, don't have lazy lists, etc. So, if iterators instead of lazy lists makes Python a bad functional language, having neither must make CaML a terrible functional language?
– abarnert
Nov 13 '14 at 1:23
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Why don't Java Generics support primitive types?
...>, we have Integer.compare(int a, int b), Byte.compare(byte a, byte b), etc. That's not a solution!
– John P
Jun 27 '14 at 18:00
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How do I use extern to share variables between source files?
...er links unless you override the
default with -fcommon (or use attributes, etc — see the link).
The next two files complete the source for prog2:
prog2.h
extern void dec(void);
extern void put(void);
extern void inc(void);
prog2.c
#include "prog2.h"
#include <stdio.h>
int main(void)
{
...
Using a strategy pattern and a command pattern
... are implementation classes that do addition, subtraction, multiplication, etc. Maybe those are not good examples?
– Joshua Davis
Jul 18 '11 at 16:45
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What is the most pythonic way to check if an object is a number?
...s scalar-like. If you have values of different type (i.e. string, numeric, etc.) coming through, then the logic of your program may need some work - how did you end up trying to multiply a string by a numeric vector in the first place?
...
windows service vs scheduled task
...client that will communicate with the service app via TCP/IP, named pipes, etc.
From a user's POV, I wonder which is easier to control. Both services and scheduled tasks are pretty much out of reach for most non-technical users, i.e. they won't even realize they exist and can be configured / stoppe...
Does Java have something like C#'s ref and out keywords?
...ould be expanded on some. You can only pass primitives (int, short, char, etc.) as value. And no, there is no out.
– Corey Sunwold
May 10 '10 at 21:26
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Freely convert between List and IEnumerable
...(y), selector(x)));
}
Then you can use:
list.Sort(x=>x.SomeProp); // etc
This updates the existing list in the same way that List<T>.Sort usually does.
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