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What does “program to interfaces, not implementations” mean?
...ks to".
WorkerClass -> DALClass
However, let's add an interface to the mix.
WorkerClass -> IDAL -> DALClass.
So the DALClass implements the IDAL interface, and worker class ONLY calls through this.
Now if we want to write tests for the code, we could instead make a simple class that j...
Mimicking sets in JavaScript?
...r and faster, but
// not as extensible. This implementation should not be mixed with the Set object
// as in don't pass a miniSet to a Set constructor or vice versa. Both can exist and be
// used separately in the same project, though if you want the features of the other
// sets, then you should ...
Singleton: How should it be used
...may make a right according to some, in the real world. But in programming, mixing two bad ideas does not result in a good one.
– jalf
Apr 17 '09 at 18:49
add a comment
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What is the most appropriate way to store user settings in Android application
...
Okay; it's been a while since the answer is kind-of mixed, but here's a few common answers. I researched this like crazy and it was hard to build a good answer
The MODE_PRIVATE method is considered generally safe, if you assume that the user didn't root the device. Your data...
What does this square bracket and parenthesis bracket notation mean [first1,last1)?
...umber is excluded,
This side of the interval is open.
An interval with mixed states is called "half-open".
For example, the range of consecutive integers from 1 .. 10 (inclusive) would be notated as such:
[1,10]
Notice how the word inclusive was used. If we want to exclude the end point but...
How can I declare and use Boolean variables in a shell script?
...s who are used to stricter languages viewing this answer to assist them in mixing up some bash glue to make their lives a bit easier would want an === operator so that strings and "booleans" aren't actually interchangeable. Should they just stick to 0 and 1 and use (( $maybeIAmTrue )) as suggested i...
How do CUDA blocks/warps/threads map onto CUDA cores?
... use at any given time is dependent on the warp schedulers and instruction mix of the application. If you don't do TEX operations then the TEX units will be idle. If you don't do a special floating point operation the SUFU units will idle.
4'. Parallel Nsight and the Visual Profiler show
a. execut...
What's wrong with nullable columns in composite primary keys?
...but comparison results can vary quite a bit when you throw a NULL into the mix -- because NULL == "don't know" so all results of a comparison involving a NULL wind up being NULL since you can't know something that is unknown. DANGER! Think carefully about that: this means that NULL comparison result...
Understanding checked vs unchecked exceptions in Java
...on class which also represents a conceptual categorization of exceptions - mixing two aspects that are not necessarily related at all.
– Michael Borgwardt
Nov 14 '13 at 21:46
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Create the perfect JPA entity [closed]
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@TheStijn This is the good mixed scenario. It justifies the need of implementing eq/hC as you initially suggested because once the entities abandon the safety of the persistence layer you can no longer trust the rules enforced by the JPA standard. In o...