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How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
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This is the best answer. Figaro and heroku_secrets don't do anything unless Rails knows that SECRET_KEY_BASE lives in ENV. I've been struggling with this thinking that if the config var existed on Heroku, Rails would pick it up just by v...
What is dynamic programming? [closed]
...f one exists) and an exponential (enumerate all possibilities and find the best one) algorithm.
DP algorithms could be implemented with recursion, but they don't have to be.
DP algorithms can't be sped up by memoization, since each sub-problem is only ever solved (or the "solve" function called) o...
Compiled vs. Interpreted Languages
...ompile-time are becoming more and more rare. Delphi/Codegear is one of the best survivors.
– TheBlastOne
Jul 16 '10 at 14:36
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How to filter SQL results in a has-many-through relation
...ran all queries a couple of times to populate the cache, then I picked the best of 5 with EXPLAIN ANALYZE.
Relevant indexes (should be the optimum - as long as we lack fore-knowledge which clubs will be queried):
ALTER TABLE student ADD CONSTRAINT student_pkey PRIMARY KEY(stud_id );
ALTER TABLE stu...
Put buttons at bottom of screen with LinearLayout?
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This is not best solution becoz after that you cant set view at the center of remaining screen .........................so best solution award goes to this answer -stackoverflow.com/a/26140793/4741746
– sushant gos...
Singleton: How should it be used
...be a cache
In strings
In Sessions
I can go all day long
How to create the best singleton:
The smaller, the better. I am a minimalist
Make sure it is thread safe
Make sure it is never null
Make sure it is created only once
Lazy or system initialization? Up to your requirements
Sometimes the OS or t...
How to implement custom JsonConverter in JSON.NET to deserialize a List of base class objects?
...ver before using the new JsonReader in serializer.Populate().
This is the best I could come up with to fix some of the problems with the above implementation, but I still think there are some things being overlooked:
Update I updated this to have a more explicit method that makes a copy of an exis...
Why '&&' and not '&'?
...ware you are working on.
Here is a benchmark for the non-believers. It's best to run the process in RealTime/High to mitigate the scheduler having an effect: https://gist.github.com/1200737
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Uses for Optional
...epting null is nicer:
foo("bar", "baz");
foo("bar", null);
Probably the best is to have an overloaded method that accepts a single string argument and provides a default for the second:
foo("bar", "baz");
foo("bar");
This does have limitations, but it's much nicer than either of the above.
Us...
Why should C++ programmers minimize use of 'new'?
... the end of the program.
Other notes
Extensive use of RAII is considered a best practice in C++ because of all the reasons above. However, there is an additional benefit which is not immediately obvious. Basically, it's better than the sum of its parts. The whole mechanism composes. It scales.
I...