Scala: links

Functional programming

Building a Scala Sequence in a Functional Style

Demystifying monads in Scala

Concurrency

Which shoe fits you? Comparing Akka Streams, Actors, and Plain Futures

Scala – Execution Order when Mapping Over Twitter Futures

ScalaZ 8 vs AKKA

Traits

To trait, or not to trait?
Traits
Scala traits implementation and interoperability. Part I: Basics
Scala traits implementation and interoperability. Part II: Traits linearization
Scala Trait and Mixin – Points to Remember
Is Traits in Scala an Interface or an Abstract Class?

Sealed traits

Everything You Ever Wanted to Know About Sealed Traits in Scala
More on Sealed Traits in Scala
Sealed Traits & Functions Referencing Sub-classes?

Typesafe Config

Configuration library for JVM languages
Typesafe Config Features and Example Usage
Environment aware configuration with Typesafe Config

Scala on Raspberry PI

Scala – IOT : First basic IOT application using Scala on RaspberryPi

 

 

WordPress: changing permalink settings and 404 page not found

Taken from:

To be able to change permalink settings you might need to change access rights of the /var/www/html/<blogfolder>/.htaccess from 644 to 666:

### On your web server
$ cd /var/www/html/<blogfolder>
$ sudo chmod 666 .htaccess
### Do not forget to change back to 644 after you are done with permalinks
$ sudo chmod 644 .htaccess

If after changing WordPress permalink settings you get notorious “404 page not found” then check that the bold options in the <Directory /var/www/> section in the /etc/apache2/apache.conf file look like this:

<Directory /var/www/>
 Options Indexes FollowSymLinks
 AllowOverride All
 Require all granted
</Directory>