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Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
... Update: The final Scala 2.8 release has a mechanism like the one I described. If you look up BitSet in the scaladocs you find: def map [B] (f: (Int) ⇒ B) : BitSet[B] [use case] Builds a new collection by applying a function to all elements of this bitset.
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Why use a prime number in hashCode?
... inserted into will only be determined by the least significant entry (the one not multiplied at all). Similar entries will collide. Not good for a hash function.
31 is a large enough prime that the number of buckets is unlikely to be divisible by it (and in fact, modern java HashMap implementation...
What is “point free” style (in Functional Programming)?
...ome up with new names for variables/arguments when I'm programming. That's one big reason I love point-free style!
– Martijn
Jun 3 '09 at 13:46
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jQuery OR Selector?
... noted this isn't really an 'or' selector, more like multiple selectors in one.
– alex
Feb 15 '10 at 3:57
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Update multiple rows in same query using PostgreSQL
I'm looking to update multiple rows in PostgreSQL in one statement. Is there a way to do something like the following?
6 An...
Running a command as Administrator using PowerShell?
... The only syntax that worked for me is in the original post, not the one by G.Lombard nor anjdreas
– Nicolas Mommaerts
Jan 22 '15 at 11:18
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JSF backing bean structure (best practices)
...Bean: Normally session or application scope. This type of bean "supports" one or more views in the "View" concern of the MVC design pattern. The typical use case is supplying an ArrayList to JSF h:selectOneMenu drop-down lists that appear in more than one JSF view. If the data in the dropdown lists...
Dynamic variable names in Bash
... arrays; as such this was a life saver. ${!...} not easy to google on that one. I assume it just expands a var name.
– Neil McGill
Jan 15 '15 at 22:37
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What is the difference between a symbolic link and a hard link?
Recently I was asked this during a job interview. I was honest and said I knew how a symbolic link behaves and how to create one, but do not understand the use of a hard link and how it differs from a symbolic one.
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What is the difference between buffer and cache memory in Linux?
...me) which would tell us if dirty blocks are counted differently than clean ones. Linux will certainly cache both types (lru as mentioned in the question) but one is far more serious in terms of memory pressure.
– Seth Robertson
Sep 26 '18 at 12:23
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