kocubinski

IAVL v2 design

• Follows work and research described in: https://docs.google.com/document/d/1l6uXIjTPHOOWM5N4sUUmUfCZvePoa5SNfIEtmgvgQSU/edit#heading=h.7l0i621y5vgm
• Current working tree: https://github.com/cosmos/iavl/tree/v2-alpha6

1 folder per module prefix, each with 2 databases, changelog.db and tree.db. storekey defaults to “root” for a single tree implementation.

receive changeset, write leaves to leaf table in changelog.db, always. this table contains a btree index. the writes are append only on the end.

kocubinski

#!/bin/sh
exec qemu-system-i386 -enable-kvm -cpu host -m 1024 -vga std -soundhw ac97 -net nic,model=rtl8139 \
-net user -drive file=winxp.img,format=raw -drive file=/usr/share/virtio/virtio-win.iso,media=cdrom

kocubinski

/x/auth/ante/feegrant_test.go -> /x/feegrant/errors.go
/x/auth/client/testutil/suite.go -> /x/bank/client/cli/tx.go
/x/auth/client/testutil/suite.go -> /x/bank/types/msgs.go
/x/auth/client/testutil/suite.go -> /x/gov/client/testutil/helpers.go
/x/auth/client/testutil/suite.go -> /x/bank/types/query.pb.go
/x/auth/client/testutil/suite.go -> /x/bank/types/tx.pb.go
/x/auth/client/testutil/suite.go -> /x/genutil/client/cli/init.go
/x/auth/client/testutil/suite.go -> /x/gov/types/v1beta1/proposal.go
/x/auth/exported/exported.go -> /x/params/types/paramset.go
/x/auth/keeper/msg_server.go -> /x/gov/types/errors.go

kocubinski

Rentals

Designation	State	Price	Note	Total
CAPE-1	MA	325	Peace Haven
CAPE-2	MA	270		2,618 8/24-8/31
[[https://www.airbnb.com/rooms/25122758?location=Cape%2520Cod%252C%2520MA%252C%2520United%2520States&adults=4&check_in=2020-07-17&

kocubinski

(define (f-11-tree n)
  (define (f n depth)
    (println-depth depth n)
    (if (< n 3)
        n
        (+ (f (- n 1) (inc depth))
           (* 2 (f (- n 2) (inc depth)))
           (* 3 (f (- n 3) (inc depth))))))
  (f n 0))

kocubinski

(ns moon-moon.core
 (:require [clojure.java.io :as io]
           [clojure.string :as str]))

(defn rand-words
 []
 (with-open [reader (io/reader "/usr/share/dict/words")]
   (->> (line-seq reader)
        (filter (partial re-matches #"[a-z]{0,7}"))
        (partial rand-nth)

kocubinski

import groovy.json.JsonSlurper;

def call(String workspace) {
  def p = ['/bin/bash', '-c', '''
docker ps --no-trunc --all \
  | grep `cat /etc/hostname` \
  | grep jenkins.sh \
  | awk '{print $1}' \
  | xargs docker inspect
'''].execute()

kocubinski

(ns moon-moon.core
  (:require [clojure.java.io :as io]
            [clojure.string :as str]))

(defn rand-words
  []
  (with-open [reader (io/reader "/usr/share/dict/words")]
    (->> (line-seq reader)
         (filter (partial re-matches #"[a-z]{0,7}"))
         (partial rand-nth)

kocubinski

# Installing
qemu-system-x86_64 -bios /usr/share/ovmf/ovmf_x64.bin -enable-kvm -cpu host -smp 4 -m 2048 -cdrom ~/Downloads/Win10_English_x64.iso -net nic,model=virtio -net user -drive file=~/vm/win10.hd.img.raw,format=raw,if=virtio -vga qxl -drive file=~/Downloads/virtio-win-0.1.105.iso,index=1,media=cdrom

# Running
qemu-system-x86_64 -bios /usr/share/ovmf/ovmf_x64.bin -enable-kvm -cpu host -smp 4 -m 4096 -net nic,model=virtio -net user -drive file=~/vm/win10.hd.img.raw,format=raw,if=virtio -vga qxl -usbdevice tablet -rtc base=utc

kocubinski

// Function closures:

var fn = function(x) {
  return function() { return x = x + 1; };
};

var fn2 = fn(2);  
// Q. What is stored in the variable fn2? 
// A. A function which, when called, increments x by 1 and returns the result.
//    A common mistake is to think it returns either 2, or 3.