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gdevanla /
Created Jun 27, 2018 — forked from ndaidong/
Install Python 3.6.5 in Ubuntu 16+
export PYTHON_VERSION=3.6.5
sudo apt update
sudo apt install --no-install-recommends -y \
software-properties-common build-essential \
libssl-dev libreadline-dev libbz2-dev libsqlite3-dev zlib1g-dev \
gdevanla /
Created May 4, 2018
Using python function call syntax to generated 'revsets' needed by mercurial
Module that can generate revset expressions required by Hg from python function call structures.
def _wrap(outer_fn, *args):
args = args or ''
if args:
args = ", ".join(args)
return '{}({})'.format(outer_fn, args)
View machine_setup.txt
Remapping keys
sudo vi /etc/default/keyboard
then find the line that starts with XKBOPTIONS, and add ctrl:nocaps to make Caps Lock an additional Control key or ctrl:swapcaps to swap Caps Lock and Control.
For example, mine looks like
# coding: utf-8
# Python code to demonstrate the Y-combinator using
# the working example presented by Jim Weirich.
def demo():
fact_1 = lambda n: 1 if n == 0 else (n * fact_1 (n - 1))
gdevanla / y-combinator-racket.rkt
Created Feb 7, 2018
Y-Combinator description in Racket
View y-combinator-racket.rkt
;; lambda expression do not have any assignments
;; so we will use the form where there is not lambda expressions
((lambda ()
(define (adder n) (+ n 1))
(define (mult3 n) (* n 3))
(mult3 (adder 10))
;; create make-adder and compose using higher-order functions
gdevanla /
Created Jan 23, 2018
Stackage commands to run before package update
stack unpack $package
cd $package-$version
stack init --resolver nightly
stack build --resolver nightly --haddock --test --bench --no-run-benchmarks
gdevanla /
Last active May 18, 2017
for color formatting
from openpyxl.styles import Alignment
def format_data(index, col_name):
alignment = Alignment(horizontal=’right’)
if col_name == ‘salary’:
return dict(
View auto_insert_github_link.el
gdevanla / cc_style_simple_example.hs
Created Feb 8, 2017
example of folding over functions
View cc_style_simple_example.hs
-- continuation calling style of functions
f :: forall a. Integral a => a -> (a -> a) -> a -> a
f y fun x = if x == y then x * x else fun x
f_base :: forall a. Num a => a -> a
gdevanla / mvar_as_closure.hs
Last active Jan 30, 2017
Using MVar as a closure value
View mvar_as_closure.hs
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE OverloadedStrings #-}
import Control.Concurrent.MVar
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