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@gzoller
gzoller / MyPhase.scala
Created December 2, 2022 21:33
Attempting to override a method in plugin
class MyPhase extends PluginPhase {
import tpd._
val phaseName = "overrider"
override val runsAfter = Set(Pickler.name)
override def transformTypeDef(tree: TypeDef)(implicit ctx: Context): Tree =
if tree.isClassDef && !tree.rhs.symbol.isStatic then // only look at classes & traits, not objects

Revisiting Tagless Final Interpreters

Tageless Final interpreters are an alternative to the traditional Algebraic Data Type (and generalized ADT) based implementation of the interpreter pattern. This document presents the Tageless Final approach with Scala, and shows how Dotty with it's recently added implicits functions makes the approach even more appealing. All examples are direct translations of their Haskell version presented in the Typed Tagless Final Interpreters: Lecture Notes (section 2).

The interpreter pattern has recently received a lot of attention in the Scala community. A lot of efforts have been invested in trying to address the biggest shortcomings of ADT/GADT based solutions: extensibility. One can first look at cats' Inject typeclass for an implementation of [Data Type à la Carte](http://www.cs.ru.nl/~W.Swierstra/Publications/DataTypesA

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
@pbrit
pbrit / gist:9713531
Created March 22, 2014 20:13
Fix for ruby with Xcode 5.1
82c82
< CONFIG["LIBRUBY_DLDFLAGS"] = "-undefineddynamic_lookup -multiply_definedsuppress -install_name $(libdir)/$(LIBRUBY_SO) -current_version $(MAJOR).$(MINOR).$(TEENY) -compatibility_version $(ruby_version) $(XLDFLAGS)"
---
> CONFIG["LIBRUBY_DLDFLAGS"] = "-undefineddynamic_lookup -multiply_defined suppress -install_name $(libdir)/$(LIBRUBY_SO) -current_version $(MAJOR).$(MINOR).$(TEENY) -compatibility_version $(ruby_version) $(XLDFLAGS)"
125c125
< CONFIG["DLDFLAGS"] = "-undefineddynamic_lookup -multiply_definedsuppress"
---
> CONFIG["DLDFLAGS"] = "-undefineddynamic_lookup -multiply_defined suppress"
@lamdor
lamdor / gtd.el
Created November 13, 2013 16:51
(global-set-key (kbd "C-c g j") 'mine-org-clock-goto)
(global-set-key (kbd "C-c g o") 'mine-open-clocked-in-task-link)
(defun mine-org-clock-goto ()
(interactive)
(org-clock-goto (not (org-clocking-p))))
(defun mine-get-clocked-in-task-link (&optional recent)
(if (or recent (org-clocking-p))
(save-excursion
--langdef=coffee
--langmap=coffee:.coffee
--regex-coffee=/(^|=[ \t])*class ([A-Za-z_][A-Za-z0-9_]+\.)*([A-Za-z_][A-Za-z0-9_]+)( extends ([A-Za-z][A-Za-z0-9_.]*)+)?$/\3/c,class/
--regex-coffee=/^[ \t]*(module\.)?(exports\.)?@?(([A-Za-z][A-Za-z0-9_.]*)+):.*[-=]>.*$/\3/m,method/
--regex-coffee=/^[ \t]*(module\.)?(exports\.)?(([A-Za-z][A-Za-z0-9_.]*)+)[ \t]*=.*[-=]>.*$/\3/f,function/
--regex-coffee=/^[ \t]*(([A-Za-z][A-Za-z0-9_.]*)+)[ \t]*=[^->\n]*$/\1/v,variable/
--regex-coffee=/^[ \t]*@(([A-Za-z][A-Za-z0-9_.]*)+)[ \t]*=[^->\n]*$/\1/f,field/
--regex-coffee=/^[ \t]*@(([A-Za-z][A-Za-z0-9_.]*)+):[^->\n]*$/\1/f,static field/
--regex-coffee=/^[ \t]*(([A-Za-z][A-Za-z0-9_.]*)+):[^->\n]*$/\1/f,field/
--regex-coffee=/((constructor|initialize):[ \t]*\()@(([A-Za-z][A-Za-z0-9_.]*)+)([ \t]*=[ \t]*[^,)]+)?/\3/f,field/
;; use uniquify
(require 'uniquify)
(setq
uniquify-buffer-name-style 'post-forward
uniquify-separator ":")
@jackcviers
jackcviers / .ctags
Created March 19, 2012 23:12
.ctags description for JavaScript and Coffeescript
--langdef=js
--langmap=js:.js
--regex-js=/([A-Za-z0-9._$]+)[ \t]*[:=][ \t]*\{/\1/,object/
--regex-js=/([A-Za-z0-9._$()]+)[ \t]*[:=][ \t]*function[ \t]*\(/\1/,function/
--regex-js=/function[ \t]+([A-Za-z0-9._$]+)[ \t]*\(([^)])\)/\1/,function/
--regex-js=/([A-Za-z0-9._$]+)[ \t]*[:=][ \t]*\[/\1/,array/
--regex-js=/([^= ]+)[ \t]*=[ \t]*[^"]'[^']*/\1/,string/
--regex-js=/([^= ]+)[ \t]*=[ \t]*[^']"[^"]*/\1/,string/
--langdef=coffee
--langmap=coffee:.coffee