dariosalvi78

/* ADS1256 simple library for Arduino
   ADS1256, datasheet: http://www.ti.com/lit/ds/sbas288j/sbas288j.pdf
   connections to Atmega328 (UNO)

    CLK  - pin 13
    DIN  - pin 11 (MOSI)
    DOUT - pin 12 (MISO)
    CS   - pin 10
    DRDY - pin 9
    RESET- pin 8 (or tie HIGH?)

non

Laws

A law is a group of two or more expressions which are required to be the same. The expressions will usually involve one or more typed holes ("inputs") which vary.

Some examples:

x.map(id) === x

jdegoes

Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

hfreire

#!/bin/sh

SOC_USB=/sys/devices/platform/soc/20980000.usb

if [ ! -d $SOC_USB ];
  then
    SOC_USB=/sys/devices/platform/soc/3f980000.usb # Raspberry Pi 3
fi

BUSPOWER=$SOC_USB/buspower

yellowflash

sealed trait RegExp {
  def isFinal:Boolean
  def acceptsEmpty:Boolean
  def shift(prev:Boolean, character:Char):RegExp
  def matches(str:String) =
    if(str.isEmpty) this.acceptsEmpty
    else str.foldLeft(this.shift(true, str.head))(_.shift(false,_)).isFinal
}

object Epsilon extends RegExp {

leifwickland

String.format() call with mismatched args
Unused function argument
aList.length == 0 <- use .isEmpty
Using string interpolation unnecessarily
Calling .toString on Array
Close scala.io.Source
Inferring Nothing
Casting instead of .toByte
Calling .toSeq on a Seq
Calling .toString on a String

jrudolph

TargetVersion: Scala 2.11 LastVersion: Scala 2.10
86 libraries available for Scala 2.11 (see the end for sbt config lines)

akka-actor                      80 versions: 2.5.9, 2.5.8, 2.5.7, 2.5.6, 2.5.5, ... [75 more]
akka-stream                     57 versions: 2.5.9, 2.5.8, 2.5.7, 2.5.6, 2.5.5, ... [52 more]
akka-http-core                  51 versions: 3.0.0-RC1, 2.4.9, 2.4.9-RC2, 2.4.9-RC1, 2.4.8, ... [46 more]
akka-http                       29 versions: 3.0.0-RC1, 10.1.8, 10.1.7, 10.1.6, 10.1.5, ... [24 more]
akka-osgi                       80 versions: 2.5.9, 2.5.8, 2.5.7, 2.5.6, 2.5.5, ... [75 more]
akka-slf4j                      80 versions: 2.5.9, 2.5.8, 2.5.7, 2.5.6, 2.5.5, ... [75 more]
akka-testkit                    80 versions: 2.5.9, 2.5.8, 2.5.7, 2.5.6, 2.5.5, ... [75 more]

edofic

val compile = {
  import tools.reflect.ToolBox
  val c = reflect.runtime.currentMirror
  val tb = c.mkToolBox()
  (src: String) => tb compile (tb parse (imports+src))
}

travisbrown

scala> import scala.language.experimental.macros
import scala.language.experimental.macros

scala> import scala.reflect.macros.{ Context, TypecheckException }
import scala.reflect.macros.{Context, TypecheckException}

scala> object NoncompilationTests {
     |   def compiles(code: _): Boolean = macro compiles_impl
     |   def compiles_impl(c: Context)(code: c.Tree) = c.literal(
     |     try {