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Zip lists in Python
...x. list, string, tuple, dictionary)
Output (list)
1st tuple = (element_1 of numbers, element_1 of letters)
2nd tuple = (e_2 numbers, e_2 letters)
…
n-th tuple = (e_n numbers, e_n letters)
List of n tuples: n is the length of the shortest argument (input)
len(numbers) =...
What are type lambdas in Scala and what are their benefits?
...ction of Either[A, B]. The monad typeclass looks like this:
trait Monad[M[_]] {
def point[A](a: A): M[A]
def bind[A, B](m: M[A])(f: A => M[B]): M[B]
}
Now, Either is a type constructor of two arguments, but to implement Monad, you need to give it a type constructor of one argument. The sol...
Mixin vs inheritance
...
A mixin is typically used with multiple inheritance. So, in that sense, there's "no difference".
The detail is that a mixin is rarely useful as a standalone object.
For example, say you have a mixin named "ColorAndDimension", which adds a co...
Backup/Restore a dockerized PostgreSQL database
...
Backup your databases
docker exec -t your-db-container pg_dumpall -c -U postgres > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql
Restore your databases
cat your_dump.sql | docker exec -i your-db-container psql -U postgres
...
If Python is interpreted, what are .pyc files?
...'translated'. Python is then compiled to a bytecode. AFAIK, only Bash is really interpreted , all other popular "interpreted" languages are all compiled to a bytecode.
– bfontaine
Aug 6 '14 at 13:42
...
How do I make CMake output into a 'bin' dir?
...
How to make it apply to all configurations at once?
– emlai
May 23 '15 at 21:24
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How to get Scala List from Java List?
...now built into the language using:
import scala.collection.JavaConversions._
...
lst.toList.foreach{ node => .... }
works. asScala did not work
In 2.12.x use import scala.collection.JavaConverters._
In 2.13.x use import scala.jdk.CollectionConverters._
...
Entity Framework with NOLOCK
...a transaction and set the isolation level to read uncommited. This essentially does the same as NOLOCK, but instead of doing it on a per table basis, it will do it for everything within the scope of the transaction.
If that sounds like what you want, here's how you could go about doing it...
//de...
Get the Last Inserted Id Using Laravel Eloquent
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Actually you can do it right in the insert $id = DB::table('someTable')->insertGetId( ['field' => Input['data']);
– Casey
May 15 '14 at 15:05
...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
... I don't get the reason why I should bother about binary or not binary at all, if I don't want to sort by password hash, compare hashes on database layer or make the password column unique (“Sorry, this password is already in use”) at all. I'd recommend using UTF8 everywhere. In that case there...