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Simplest code for array intersection in javascript
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Use a combination of Array.prototype.filter and Array.prototype.includes:
array1.filter(value => array2.includes(value))
For older browsers, with Array.prototype.indexOf and without an arrow function:
array1.filter(function(...
What is the “right” JSON date format?
...s not sort correctly after the year 10000. We do have almost 8000 years to come up with a new format though, so it's probably not an issue.
– Erfa
Aug 19 '15 at 14:29
8
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Do while loop in SQL Server 2008
...ike DO-WHILE loop.
Examples are taken from here: http://blog.sqlauthority.com/2007/10/24/sql-server-simple-example-of-while-loop-with-continue-and-break-keywords/
Example of WHILE Loop
DECLARE @intFlag INT
SET @intFlag = 1
WHILE (@intFlag <=5)
BEGIN
PRINT @intFlag
SET @intFlag = ...
How to create a GUID/UUID in Python
...method using ActivePython on Windows but it's Windows only because it uses COM. Is there a method using plain Python?
8 Ans...
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...
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...
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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How to hide close button in WPF window?
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How do I make and use a Queue in Objective-C?
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I added a commented-out line at the beginning of dequeue for those that wish to return nil rather than raise an exception when trying to dequeue from an empty queue. IMO, following the NSMutableArray behavior of raising an exception is...