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# John Ciprianojohncip

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Last active Feb 17, 2016
Count on Cantor
View 264.java
 /* * 264 - Count on Cantor * * Given an input value N, print the Nth term in Cantor's enumeration. * * There may be a simpler closed form of this. However, what strikes me as * possible right now is: we figure out what diagonal n is on, which gives us * the beginning of that diagonal (1/2, 3/1, 1/4, 5/1, etc.). Then, we adjust * the numerator and denominator based on the distance from the first term in * the diagonal and the direction it takes (up-right for odd, down-left for
Created May 25, 2014
Contest problem fast I/O template
View uva-fast-io
 /* * Title */ import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main {
Last active Jan 7, 2016
Name distribution
View name-length-histogram.txt
 User name metrics Bin width: 1 Each # represents 500 users. LENGTH OF FIRST NAME ==================== bins: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63] freqs: [36, 510, 2547, 5905, 10086, 11103, 9461, 5363, 3918, 2780, 3515, 3655, 3609, 3213, 2246, 1469, 968, 576, 410, 253, 189, 162, 102, 57, 51, 42, 31, 24, 15, 4, 1, 4, 2, 2, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1] 01: 02: #
Last active Feb 17, 2016
Print fixtures used
View print_fixtures.rb
 log = StringIO.new ActiveRecord::Base.logger = Logger.new(log) Gradescope::Application.config.colorize_logging = false RSpec.configure do |config| config.after :suite do lines = log.tap(&:rewind).readlines.to_a matching = lines.map do |line| next unless line =~ /Load/
Created Mar 3, 2016
View viewer_components.opml
 johnmikecip@gmail.com
Last active Apr 21, 2016
 table.fixed-header table-layout: fixed border-collapse: collapse thead tr display: block position: relative tbody display: block overflow: auto width: 100%
Last active Apr 22, 2016
Browserify 3rd-party React components found on npm
View browserify_react_lib.sh
 # Browserify 3rd-party React components found on npm # (prevents React & ReactDOM from being bundled) export PACKAGE='simple-react-modal' # npm package export EXPORT_NAME='SimpleReactModal' # will end up on window with this name mkdir project && cd project npm init -f npm install -D browserify react react-dom
Last active May 26, 2016
Install VirtualBox Guest Additions on Ubuntu
Last active Jun 22, 2019

N+1 query problem

• ORMs make it easy to a query per loop iteration, which we want to avoid

`eager_load`

• single query (left outer join)
• can reference the other table's columns in `where`

`preload`

• a few queries (one per table)
• typically faster
Created Apr 28, 2017
View pronto_hack.rb
 ❯ vi /usr/local/lib/ruby/gems/2.3.0/gems/pronto-0.8.2/lib/pronto/formatter/text_formatter.rb # change line 17 to ... # "[#{message.runner.title}] #{format_location(message)} #{format_level(message)}: #{message.msg}".strip ❯ pronto run -r reek Running Pronto::Reek [reek] app/decorators/course_membership_decorator.rb:21 I: Is controlled by argument 'current_user' (ControlParameter)
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