aleksandersumowski

#!/opt/homebrew/bin/python3

# CLI program to control the mediakeys on OS X. Used to emulate the mediakey on a keyboard with no such keys.
# Easiest used in combination with a launcher/trigger software such as Quicksilver.
# Main part taken from http://stackoverflow.com/questions/11045814/emulate-media-key-press-on-mac
# Glue to make it into cli program by Fredrik Wallner http://www.wallner.nu/fredrik/
# requires installing `pyobjc` eg via `/opt/homebrew/bin/pip3 install -U pyobjc`

import Quartz
import sys

aleksandersumowski

2020/06/19 18:08:14 [INFO] Terraform version: 0.12.26  
2020/06/19 18:08:14 [INFO] Go runtime version: go1.12.13
2020/06/19 18:08:14 [INFO] CLI args: []string{"/usr/local/Cellar/tfenv/2.0.0/versions/0.12.26/terraform", "plan", "-out=tf.out"}
2020/06/19 18:08:14 [DEBUG] Attempting to open CLI config file: /Users/aleksandersumowski/.terraformrc
2020/06/19 18:08:14 [DEBUG] File doesn't exist, but doesn't need to. Ignoring.
2020/06/19 18:08:14 [INFO] CLI command args: []string{"plan", "-out=tf.out"}
2020/06/19 18:08:14 [TRACE] Meta.Backend: no config given or present on disk, so returning nil config
2020/06/19 18:08:14 [TRACE] Meta.Backend: backend has not previously been initialized in this working directory
2020/06/19 18:08:14 [DEBUG] New state was assigned lineage "a2b02c48-d401-473e-e2ac-07e1f5d03d62"
2020/06/19 18:08:14 [TRACE] Meta.Backend: using default local state only (no backend configuration, and no existing initialized backend)

aleksandersumowski

The problem was to pattern match on two values with a guard predicate checking condition across both values.

Specifically to check whether account has enough limit to perform a transaction. I wanted to extract current account limit and transaction amount from incoming event, then check whether amount is less then the limit.

Below are implementations in three different pattern matching libraries.

Meander is the nicest. Supports the behaviour I would expect.

core.match couldn't bind the values from the matched maps to pass to the guard predicate. I had to destructure the maps to get the values within the predicate, kinda defeating the purpose of the pattern matching.

aleksandersumowski

(defn a-d-d [delay-size]
  (fn [rf]
    (let [state (volatile! [])]
      (fn
        ([] (rf))
        ([result]
         (let [buffer @state]
           (-> (if (seq buffer)
                 (rf result buffer)
                 result)

aleksandersumowski

Keybase proof

I hereby claim:

• I am aleksandersumowski on github.
• I am aleksander (https://keybase.io/aleksander) on keybase.
• I have a public key ASCL3bXfcrOTf0n9y686uKnVTxpJ0Ct_T2VAQfRHW6PFzwo

To claim this, I am signing this object:

aleksandersumowski

import Data.Char
import Debug.Trace

vigenere input keyword = let in_ord  = trace "1" (map ((subtract 65) . ord) input) 
                             key_ord = (map  ((subtract 65) . ord) $  take  (length input) (cycle keyword))
                             sum_ord = zipWith (+) in_ord key_ord 
                             next = map (mod 25) sum_ord
                             last = map (+ 65) sum_ord
                             in map chr last

aleksandersumowski

(defn tap [msg in]
  (println msg in)
  in)

aleksandersumowski

ReasonML first impressions

Objective: Get a fast development feedback cycle from reasonML to Javascript.

Tools:

• npm
• bsb: BuckleScript build system de
• docker

aleksandersumowski

from transit.reader import Reader
from kafka import KafkaConsumer
from StringIO import StringIO

topic = ''
kafka_brokers = []

consumer = KafkaConsumer(topic,
                         group_id='my_group',
                         bootstrap_servers=kafka_brokers,

aleksandersumowski

Keybase proof

I hereby claim:

• I am aleksandersumowski on github.
• I am aleksander (https://keybase.io/aleksander) on keybase.
• I have a public key whose fingerprint is 563B 3A4F 87CE 2346 1158 1919 E279 75D0 E823 3EA1

To claim this, I am signing this object: