View gist:613cebba33eaf0bf767d473d9e5eaa57
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require 'active_support/core_ext/string' | |
module Logger | |
class Null | |
def initialize | |
@blob = {} | |
end | |
def unknown(*); end | |
def fatal(*); end |
View metaprogramming but inspectable
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@class_generator = ->(name, attrs) { | |
file = "tmp/meta_classes/#{name.underscore}.rb" | |
FileUtils.mkdir_p(File.dirname(file)) | |
template = File.write(file, ERB.new(<<TEMP, nil, "%").result(binding)) | |
class <%= name %> | |
attr_accessor <%= attrs.map(&:inspect).join(', ') %> | |
def initialize(<%= attrs.join(", ") %>) | |
% attrs.each do |attr| | |
@<%= attr %> = <%= attr %> |
View line lengths
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[[3, "end"], | |
[3, "end"], | |
[3, "end"], | |
[3, "end"], | |
[5, " end"], | |
[5, " end"], | |
[5, " end"], | |
[5, " end"], | |
[5, " end"], | |
[5, " end"], |
View foo.sh
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$ be() { if [ -f .env ]; then env $(<.env grep -v "^#") bundle exec "$@"; else bundle exec "$@"; fi; } | |
$ echo HELLO=WORLD > .env | |
$ echo "# a comment" >> .env | |
$ be ruby -e 'puts ENV["HELLO"]' | |
WORLD |
View foo.rb
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def set_env | |
around do |ex| | |
@old_env = ENV.to_h | |
yield ENV | |
ex.call | |
ENV.replace(ENV) | |
end | |
end | |
View herp.sh
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ag ENV.*?[A-Z_]+ -o --no-filename | ag -o [A-Z_]+$ | sort | uniq |
View foo.sql
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mysql> create temporary table tmp (d INT(11)); | |
Query OK, 0 rows affected (0.02 sec) | |
/* there are 2 rows being inserted with value of 1 */ | |
mysql> insert into tmp (d) values (1), (2), (1), (3); | |
Query OK, 4 rows affected (0.01 sec) | |
/* this shows that distinct works */ | |
mysql> select distinct d from tmp; | |
+------+ |
View gist:d0fa4e71ac8a584199115c123a0a5f5f
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>> RUST_BACKTRACE=1 cargo run > log.txt | |
Compiling serde v1.0.43 | |
Compiling core-foundation-sys v0.5.1 | |
Compiling regex-syntax v0.5.5 | |
Compiling walkdir v2.1.4 | |
Compiling base64 v0.9.1 | |
Compiling proc-macro2 v0.3.8 | |
Compiling num-traits v0.1.43 | |
Compiling rand v0.4.2 | |
Compiling net2 v0.2.32 |
View insert_args.rb
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class Proc | |
def <<(*args) | |
args = args.flatten if args.count == 1 | |
-> (*items) { self.call(*items, *args) } | |
end | |
end | |
adder = -> (*args) { args.inject(&:+) } | |
puts [1,2,3,4,5] |
View has_one_through_problem.rb
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begin | |
require 'bundler/inline' | |
rescue LoadError => e | |
$stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler' | |
raise e | |
end | |
gemfile(true) do | |
source 'https://rubygems.org' | |
gem 'rails', github: 'rails/rails' |
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