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Big-O summary for Java Collections Framework implementations? [closed]
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The guy above gave comparison for HashMap / HashSet vs. TreeMap / TreeSet.
I will talk about ArrayList vs. LinkedList:
ArrayList:
O(1) get()
amortized O(1) add()
if you insert or delete an element in the middle using ListIterator.add() or Iterator.remove(), it will be O(n)...
Comparison of CI Servers? [closed]
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community wiki
5 revs, 5 users 76%Jeffrey Fredrick
5
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What does ~~ (“double tilde”) do in Javascript?
...Somewhat surprisingly, ~~ is faster than Math.trunc, jsperf.com/math-trunc-vs-double-bitwise-not-operator. Though, not everything is about speed; readability too.
– Gajus
Dec 20 '14 at 11:10
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When should a class be Comparable and/or Comparator?
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The text below comes from Comparator vs Comparable
Comparable
A comparable object is capable of comparing itself with another object. The class itself must implements the java.lang.Comparable interface in order to be able to compare its instances.
Comparator
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OS X Bash, 'watch' command
...n't think it will. It doesn't for me. This has nothing to do with Ubuntu vs OSX or Linux vs Unix, it's the behaviour of bash itself.
– ghoti
Aug 19 '13 at 20:10
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The request was aborted: Could not create SSL/TLS secure channel
... I am not sure if it is related, but this post gave me the idea to run VS as admin when making this call from VS and that fixed the issue for me.
– PFranchise
Aug 16 '13 at 14:42
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How to truncate milliseconds off of a .NET DateTime
...is between 50% and about 100% depending on the runtime; net 4.7.2: 0.35µs vs 0.62 µs and core 3.1: 0.18 µs vs 0.12 µs that's micro-seconds (10^-6 seconds)
– juwens
Feb 3 at 15:55
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Using column alias in WHERE clause of MySQL query produces an error
...ing HAVING instead may do the work. Make sure to give a read at this WHERE vs HAVING though.
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DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
... say solution; perhaps it's just another motivation to meticulously use venvs...
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What is the rationale behind having companion objects in Scala?
... Int) = {
new AlternativeThing(i)
}
}
// somewhere else you can
val vs = AbstractClass("asdf") // gives you the RealThing wrapped over string
val vi = AbstractClass(123) // gives you AlternativeThing wrapped over int
I wouldn't call the object/base class AbstractXxxxx because it doesn't l...