francois

╰─○ curl -o foo.rb 'https://gist.githubusercontent.com/n-b/401518f50a553dc32edad5932872b4f0/raw/da6b298c533f9cd46fe62874646438411f452aa8/utf8.rb'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   140  100   140    0     0    873      0 --:--:-- --:--:-- --:--:--   875

╰─○ cat foo.rb
#! ruby
module Foo_é
  def self.bla
    puts "bla"

francois

╰─○ devenv search postgres
error: builder for '/nix/store/76rmja3dxh8609xj01393p7b9sby53zq-llvm-13.0.1.drv' failed with exit code 2;
       last 10 log lines:
       > [  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/Types.cpp.o
       > [  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86DisassemblerTables.cpp.o
       > [  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86EVEX2VEXTablesEmitter.cpp.o
       > [  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86FoldTablesEmitter.cpp.o
       > [  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86ModRMFilters.cpp.o
       > [  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86RecognizableInstr.cpp.o
       > [  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/WebAssemblyDisassemblerEmitter.cpp.o

francois

require "benchmark"

srand(42)
ARRAY = 1_000_000.times.map { rand }.freeze

Benchmark.bmbm do |b|
  b.report("combined")  { ARRAY.select{|val| val < 500 && val > -500 && !val.zero?}.map{|val| -2 * val}.select{|val| val / 2 < 1}.to_a }
  b.report("separate")  { ARRAY.select{|val| val < 500}.select{|val| val > -500}.reject(&:zero?).map{|val| -2 * val}.select{|val| val / 2 < 1}.to_a }
  b.report("lazy-sep")  { ARRAY.lazy.select{|val| val < 500}.select{|val| val > -500}.reject(&:zero?).map{|val| -2 * val}.select{|val| val / 2 < 1}.to_a }
  b.report("lazy-comb") { ARRAY.lazy.select{|val| val < 500 && val > -500 && !val.zero?}.map{|val| -2 * val}.select{|val| val / 2 < 1}.to_a }

francois

[1] pry(main)> RUBY_VERSION
=> "2.5.7"
[2] pry(main)> JRUBY_VERSION
=> "9.2.9.0"
[3] pry(main)> RUBY_ENGINE
=> "jruby"
[4] pry(main)> require "java"
=> true
[5] pry(main)> require "./app/vendor/metrics-core-4.1.12.1.jar"
=> true

francois

                                                  Table "public.stops"
             Column             |            Type             | Collation | Nullable |              Default
--------------------------------+-----------------------------+-----------+----------+-----------------------------------
 id                             | integer                     |           | not null | nextval('stops_id_seq'::regclass)
 order                          | integer                     |           | not null | 1
 stop_type_id                   | integer                     |           | not null |
 bus_route_id                   | integer                     |           | not null |
 location_id                    | integer                     |           |          |
 delay_in_seconds               | integer                     |           | not null | 0
 duration_in_seconds            | integer                     |           | not null | 0

francois

...
 2017-07-14 12:52:00+00 |     2
 2017-07-14 12:53:00+00 |     2
 2017-07-14 12:54:00+00 |     2
 2017-07-14 12:55:00+00 |     2
 2017-07-14 12:56:00+00 |     2
 2017-07-14 12:57:00+00 |     2
 2017-07-14 12:58:00+00 |     2
 2017-07-14 12:59:00+00 |     2
 2017-07-14 13:00:00+00 |     3

francois

#!/bin/sh
#
# An example hook script to verify what is about to be committed.
# Called by "git commit" with no arguments.  The hook should
# exit with non-zero status after issuing an appropriate message if
# it wants to stop the commit.
#
# To enable this hook, rename this file to "pre-commit".

if git rev-parse --verify HEAD >/dev/null 2>&1

francois

$ psql --version
psql (PostgreSQL) 9.6.2

$ psql -h localhost
psql (9.6.2)

francois@localhost francois # select version();
                                                    version
----------------------------------------------------------------------------------------------------------------
 PostgreSQL 9.6.2 on x86_64-apple-darwin15.6.0, compiled by Apple LLVM version 8.0.0 (clang-800.0.42.1), 64-bit

francois

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  isSleeping: function() {
    return this.get('state') === 'sleeping';
  },
  
  isNapping: function() {

francois

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  // exposes the problem I was seeing on
  // http://stackoverflow.com/q/41515493/7355
  averageNapDuration: function() {
    console.log('nap called');
		return 124;