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What are the pros and cons of performing calculations in sql vs. in your application
... depends on a lot of factors - but most crucially:
complexity of calculations (prefer doing complex crunching on an app-server, since that scales out; rather than a db server, which scales up)
volume of data (if you need to access/aggregate a lot of data, doing it at the db server will save bandwi...
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...
How can I tell if a DOM element is visible in the current viewport?
...ers. This technique is no longer recommended and you should use Dan's solution if you do not need to support version of Internet Explorer before 7.
Original solution (now outdated):
This will check if the element is entirely visible in the current viewport:
function elementInViewport(el) {
var...
Android REST client, Sample?
...for you. More importantly, some of these libraries handle device configuration changes for you.
The original answer is retained below for reference. But please also take the time to examine some of the Rest client libraries for Android to see if they fit your use cases. The following is a list of so...
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...
How should I read a file line-by-line in Python?
...on's relatively deterministic reference-counting scheme for garbage collection. Other, hypothetical implementations of Python will not necessarily close the file "quickly enough" without the with block if they use some other scheme to reclaim memory.
In such an implementation, you might get a "too...
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
2
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Create the perfect JPA entity [closed]
...
@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...
Change column type from string to float in Pandas
...mn of a DataFrame.
>>> s = pd.Series(["8", 6, "7.5", 3, "0.9"]) # mixed string and numeric values
>>> s
0 8
1 6
2 7.5
3 3
4 0.9
dtype: object
>>> pd.to_numeric(s) # convert everything to float values
0 8.0
1 6.0
2 7.5
3 3.0
4 0.9
dtype:...