werner

Focus on data analysis. Data is more important, because we already have the tools for mathematical operations, however is good to be familiar with the models available because some might work better than others.

Seems it needs a lot of trial and error.

Categorical attributes are repetitive values, that's why numeric fields could be categorical. 

https://www.dummies.com/education/math/statistics/why-standard-deviation-is-an-important-statistic/

The std
row shows the standard deviation, which measures how dispersed the values are.

werner

require "test/unit"

class Array

  ##
  # Creates a new array, taking all elements into one or more dimensions, depending on the argument.
  # If no argument is set, the array dimension will be one.
  #
  # +examples:+
  #

werner

local_commit  = `git rev-parse HEAD`
raw_remote_commit = `git ls-remote --heads --quiet`
remote_commit = raw_remote_commit.split(/\s/)[0].strip
search_in_commits = `git log | grep #{remote_commit}`

puts 'Branch not merged with master' if search_in_commits == ''

werner

FROM rust:1.51.0

WORKDIR /usr/src
RUN cargo new project --bin
WORKDIR /usr/src/project
RUN echo 'actix-web = "3"' >> Cargo.toml
RUN echo 'diesel = { version = "1.4.4", features = ["sqlite"] }' >> Cargo.toml
RUN echo 'dotenv = "0.15.0"' >> Cargo.toml
RUN echo 'serde = { version = "1.0", features = ["derive"] }' >> Cargo.toml
RUN echo 'serde_json = "1.0"' >> Cargo.toml

werner

[[{"id":1,"name":"army boots","cost":12.34,"active":true},[]],[{"id":2,"name":"athletic shoes","cost":10.67,"active":true},[]],[{"id":3,"name":"ballet shoes","cost":9.87,"active":true},[]],[{"id":4,"name":"cowboy boots","cost":19.47,"active":true},[]],[{"id":5,"name":"dress shoes","cost":25.99,"active":true},[]],[{"id":6,"name":"flip-flops","cost":5.88,"active":true},[]],[{"id":7,"name":"high heels","cost":29.99,"active":true},[]],[{"id":8,"name":"moccasins","cost":21.99,"active":true},[]],[{"id":9,"name":"platform shoes","cost":31.99,"active":true},[]],[{"id":10,"name":"running shoes","cost":20.99,"active":true},[]]]