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In Clojure, when should I use a vector over a list, and the other way around?
...de. Good thing answering your own questions is encouraged on Stackoverflow.com :D
I had a quick discussion with Rich Hickey, and here is the gist of it.
[12:21] <Raynes> Vectors aren't seqs, right?
[12:21] <rhickey> Raynes: no, but they are sequential
[12:21] <rhickey> ,(s...
PostgreSQL: Modify OWNER on all tables simultaneously in PostgreSQL
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See REASSIGN OWNED command
Note: As @trygvis mentions in the answer below, the REASSIGN OWNED command is available since at least version 8.2, and is a much easier method.
Since you're changing the ownership for all tables, you likely want ...
What are all the uses of an underscore in Scala?
...tten!
Example showing why foo(_) and foo _ are different:
This example comes from 0__:
trait PlaceholderExample {
def process[A](f: A => Unit)
val set: Set[_ => Unit]
set.foreach(process _) // Error
set.foreach(process(_)) // No Error
}
In the first case, process _ represents...
Entity Framework vs LINQ to SQL
...dict while they are very similar in style using LINQ lambdas, each API has completely different underpinnings. For instance the way LINQ2SQL generates SQL queries allows for the use of SQL functions, whereas L2E does not, or at least did not as of 2008.
– Kris
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Pythonic way to check if a list is sorted or not
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A combo of a couple of the solutions: def isSorted(x, key = lambda x: x): return all([key(x[i]) <= key(x[i + 1]) for i in xrange(len(x) - 1)])
– eacousineau
Sep 27 '11 at 23:26
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Why does Java's hashCode() in String use 31 as a multiplier?
Per the Java documentation, the hash code for a String object is computed as:
13 Answers
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Using Git, show all commits that are in one branch, but not the other(s)
...I would like to delete. However, before doing so, I want to check that all commits made to this branch were at some point merged into some other branch. Thus, I'd like to see all commits made to my current branch which have not been applied to any other branch [or, if this is not possible without so...
What is a C++ delegate?
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@J.N: Why do you recommend not to use function pointers but seem to be okay with using the member methods pointers ? They are just identical!
– Matthieu M.
Mar 5 '12 at 14:46
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How to hide close button in WPF window?
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