devhero

# ubuntu
/etc/postgresql/9.1/main
# centos
/var/lib/pgsql/9.x/data

postgresql.conf
listen_addresses = '*'

pg_hba.conf
host all all 0.0.0.0/0 md5 

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# INSTALL FROM BINARIES
wget https://nodejs.org/dist/v0.12.7/node-v0.12.7-linux-x64.tar.gz
sudo tar --strip-components 1 -xzvf node-v* -C /usr/local

# EPEL RELEASE
sudo yum install epel-release
sudo yum install nodejs

# COMPILE
wget https://nodejs.org/dist/v0.12.7/node-v0.12.7.tar.gz

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yum install http://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/pgdg-redhat94-9.4-1.noarch.rpm

yum install postgresql94-server postgresql94-contrib postgresql-devel
service postgresql-9.4 initdb
chkconfig postgresql-9.4 on

# MANAGE
service postgresql-9.4 start
service postgresql-9.4 stop
service postgresql-9.4 restart

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HTTPS
git clone https://[email protected]/username/repo.git
insert password

GIT
register ssh key
git clone [email protected]:username/repo.git

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spring stop
bin/spring
rails c

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#install rvm, ruby
...

# install rails
gem install rails

# create project_folder, goto into folder
rails new . --database=postgresql

# edit database.yml filling username, passowrd, host, port

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The Role of Deliberate Practice in the Acquisition of Expert Performance
by James Somers, February 9, 2010

I have just finished reading a famous paper by Ericsson, Krample, and Tesch-Romer called “The Role of Deliberate Practice in the Acquisition of Expert Performance” (1993, Psychological Review).

The paper’s key claim is that performance—be it in chess, or swimming, or violin—is a monotonic function of accumulated deliberate practice. More deliberate practice equals better performance.

So what is “deliberate” practice, and how is it different from the regular kind?

The most cited condition concerns the subjects’ motivation to attend to the task and exert effort to improve their performance. In addition, the design of the task should take into account the preexisting knowledge of the learners so that the task can be correctly understood after a brief period of instruction. The subjects should receive immediate informative feedback and knowledge of results of their performance. The subjects should repeat

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echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

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message = MyMailer.new_products(c, products)

customers.each do |c|
  mail = message.dupe()
  mail.to = c.email
  mail.deliver
end

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File.open(file_path, 'r') do |f|
  send_data f.read, type: "text/excel"
end
File.delete(file_path)