djburdick

 
1. Start with a clean working directory 
2. current branch is always the target 
3. investigate conflicts with git diff (or git mergetool) 
4. edit conflicting files 
5. git add file 
6. git commit 
 
Aborting a merge: 
git reset --hard HEAD	# prior to merge commit 

djburdick

 
us = user cpu 
sy = system cpu 
id = idle CPU (high is good) 
wa = I/O wait (either RAM or disk. High here means prob not a cpu issue) 

Mem: free + Swap cached = actual free RAM
iostat
#
                        Load average is the last: 1, 5 and 15 minutes. 

djburdick

 
Rails.redis.get(key) 
Rails.redis.set(key, value) 
Rails.redis.expire(key, 1.hour) 
Rails.redis.del(key) 

 
Rails.redis.sadd(set_name, value) 
Rails.redis.srem(set_name, key) 
Rails.redis.sismember(set_name, value) # boolean test to see if val exists 

djburdick

# In spec_helper.rb

RSpec.configure do |config|
  ....
  
  rubocop_output = `rubocop`
  print rubocop_output
  fail "RuboCop Errors" unless rubocop_output.match(/files inspected, no offenses detected/)
end

djburdick

 
begin 
 
rescue 
 
end 

djburdick

#>    lower_bound upper_bound fdo_count_to_suspend_on 
#> 1            0          18             2 
#> 2           19          86             3 
#> 3           87         180             4 
#> 4          181         310             5 
#> 5          311         inf             6 

djburdick

Commands:
docker run hello-world # run container
docker run -d -p 4000:80 hello-world  # run in the background on port 4000
docker container stop CONTAINER_ID  # stop container id
docker stop $(docker ps -a -q)  # stop all containers

docker image ls  # list images
docker container ls --all # list all containers
docker build -t appname .   # build the app in currect dir

djburdick

 
	Object.send(var) 

 
request = gets 
 
if ticket.respond_to?(request) 
	puts ticket.send(request) 
end 

djburdick

 string = mystring 
string[0].chr

djburdick

 
module Party 
 def full_party? 
 self == 8? true : false 
 end 
end 
 
include Party 
 
class People