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What is the basic and essential difference between Concatenate and Append
"Concatenate" joins two specific items together, whereas "append" adds what you specify to whatever may already be there.
When use Concat or append on two strings they both may give you same result when you output them
but the
main difference is on using concatenation new string object is created where as its not the same in case of StrinBuffer APPEND()
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So, say you have 2 sets with unknown properties. So the order and the size of each set is unknown. How would we merge and sort these 2 sets into one set?
The solution I have is to simply add the 2 sets into one set and perform a merge sort.
I feel as if there is a better way. Does anyone have any ideas?
Typically you would concatenate the sets and then sort them as a single set, that is almost as simple as it gets. I'm guessing you are using Python for this if that's the case you can use function sorted().
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explain the comparison with the example.
can anyone explain to me the line from the book "java8 in Action" ---
every element in the collection has to be computed before it can be
added to the collection.
I like the explanation from the book Java 8 in action, maybe it will help you too understand better the difference:
For readers who like philosophical viewpoints, you can see a stream as a set of values spread out
in time. In contrast, a collection is a set of values spread out in space (here, computer memory),
which all exist at a single point in time—and which you access using an iterator to access
members inside a for-each loop.
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Is there a way to pull a random element from a list? Like say, picking a random name from a list of 10 names.
You can use Array#sample if the list is an array:
names.sample
Otherwise, if it's a string, you can convert it into an array first:
names.split.sample
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How do I use separate synonym dictionaries for websolr?
(There is only one synonym file in configuration panel. I probably need separate synonym set for each language)
Right now we only support the one synonyms file. We've got some ideas for more flexible configuration that may address this in the future. Best to ask us these kinds of questions at our official support channels: http://help.websolr.com/
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I have a data element with units of tenths of a second (that is, the value "123" really means "12.3 seconds").
What is a good term for an descriptive identifier for this type of data? I'd be comfortable writing something like durationMilliseconds or durationMicroseconds, but durationDeciseconds looks odd. durationInTenthsOfSeconds doesn't make me happy either.
Decisecond is the standard SI unit for this measurement, so I'd say using that is better than inventing something that may be ambiguous.
Actually, in the past I've used things like TICKS_PER_100MS for the same reason. But durationIn100msPeriods is just as bad as durationInTenthsOfSeconds.
http://en.wiktionary.org/wiki/decisecond
Would durationTenthsOfASecond be too verbose?