simonmichael

declare -A FLAGS                                                                                                                                                                                                                                                
declare -a ARGS                                                                                                                                                                                                                                                 
while [[ $# -gt 0 ]]; do                                                                                                                                                                                                                                        
    key="$1"                                                                                                                                                                                                                                                 

simonmichael

assets
 business
  accounts receivable
  bank
 personal
  accounts receivable
  bank
  cash
  gifts
  online

simonmichael

# unregister broken GHC packages. Run this a few times to resolve dependency rot in installed packages.                                                                                                                                     
# ghc-pkg-clean -f cabal/dev/packages*.conf also works.                                                                                                                                                                                     
function ghc-pkg-clean() {
    for p in `ghc-pkg check $* 2>&1  | grep problems | awk '{print $6}' | sed -e 's/:$//'`
    do
        echo unregistering $p; ghc-pkg $* unregister $p
    done
}

# remove all installed GHC/cabal packages, leaving ~/.cabal binaries and docs in place.                                                                                                                                                     

simonmichael

;; Try to ensure sensible window splitting, independent of frame and font size.
;; Things I don't want: 
;; - excessive horizontal splitting (generally I prefer no more than 2 windows across)
;; - horizontal splitting when frame is tall and narrow (causing eg useless narrow man page formatting)
;; So, aim for a simple policy: popup windows shall be half width in a wide frame, 
;; half height in a tall frame.
;;
;; Emacs' window splitting behaviour is complex and must be read carefully.
;; In particular, note: it checks split-window-height first, and if that permits it to
;; split vertically, it does that and split-window-horizontally is ignored.

simonmichael

; Test ledger cost/price syntax, lots, revaluation, capital gains

P 2019-01-01 ETC  11 EUR
P 2019-02-01 ETC  12 EUR

; Fluctuating cost/price
; @, @@       https://www.ledger-cli.org/3.0/doc/ledger3.html#Posting-cost 
; { }, {{ }}  https://www.ledger-cli.org/3.0/doc/ledger3.html#Commodity-prices
; "functionally.. no difference"  https://www.ledger-cli.org/3.0/doc/ledger3.html#Prices-versus-costs

simonmichael

Parser P.1

Human: write me an example parser using the applicative style and 3 different tokens using the latest version of parsec in haskell.

---

Assistant:

Sure! Here is an example parser using the applicative style and 3 different tokens using the latest version of Parsec in Haskell:

   Copy code
import Text.Parsec
-- Our three tokens are integers, floating point numbers, and strings
data Token = IntToken Int
 | FloatToken Double

simonmichael

Tested 2022-12-18 with hledger 1.28.99-g016b7759f-20221209, mac-aarch64

@alias

../regress/1384C1D8.test: [Failed]

Command (at line 20): hledger -f- check Expected stderr:

Got stderr: hledger: Error: -:1:1:

simonmichael

stack build hledger-lib –force-dirty –ghc-options=’-fforce-recomp -ddump-timings’ -*- mode:org; eval:(hi-lock-mode 1); -*-

Hi-lock: ((“alloc=\w+” (0 ‘hi-blue-b t))) Hi-lock: ((“time=\w\w\w.*” (0 ‘hi-red-b))) Hi-lock: ((“time=\w\w\w\w.*” (0 ‘highlight))) Hi-lock: end

hledger-lib-1.25.99: unregistering (–force-dirty specified) hledger-lib> configure (lib) Configuring hledger-lib-1.25.99…

initializing unit database:

simonmichael

SM's Haskell Survival Guide

Somewhat-repeatable recipes for getting a reliable haskell build toolchain installed as of 2022Q1. You might need to make adjustments, eg on Windows, but hopefully not too many.

Set up with ghcup

Current most popular method. Best way to get native arm tools on mac m1. You can use it to install the compiler ghc, build tools cabal and/or stack, and IDE/editor language server hls (under $HOME/.ghcup). Actively maintained.

• install latest ghcup (manages haskell core tools)

simonmichael

"
prototype ledger file parser in squeak
Simon Michael

test scripts:

s1 := LedgerParserTests sample1 readStream
PositionableStream
2007/10/7 the fairmont sonoma mission inn & spa
    expenses:food:dining  $11