jeffreyiacono

def ampersandy(n)
  yield n
end

ampersandy(10) do |x|
  x + 10
end
# => 20  

l = lambda { |x| x + 10 }

jeffreyiacono

def return_proc
  p = Proc.new { return "Now you see me" }
  p.call
  return "Now you don't!"
end

return_proc
# => "Now you see me"

def return_lambda

jeffreyiacono

require "csv"

CSV.parse(DATA, headers: true).each do |row|
  puts row["kURL"]
end

__END__
kId,kName,kURL
1,Google UK,http://google.co.uk
2,"Yahoo, UK",http://yahoo.co.uk

jeffreyiacono

no_nas <- complete.cases(something_with_nas)

jeffreyiacono

# Disable the default XML params parser - its full of holes
ActionDispatch::ParamsParser::DEFAULT_PARSERS.delete(Mime::XML)

jeffreyiacono

Some R Stuff

with => temporary attach table and xtabs => summarize data attach => ex. customer_payments$amount_cents

... same as ...

attach(customer_payments)

jeffreyiacono

var today = new Date();
console.log("today: " + today);
console.log("today.getTime(): " + today.getTime());
console.log("today.toISOString(): " + today.toISOString());
console.log("today.getTimezoneOffset(): " + today.getTimezoneOffset()); # returns in number of minutes
console.log("today.getTimezoneOffset() * 60 * 1000: " + today.getTimezoneOffset() * 60 * 1000) # num mins * 60 = sec * 1000 to play nice w/ #getTime()

today.setTime(today.getTime() - (today.getTimezoneOffset() * 60 * 1000));

console.log("today.toISOString(): " + today.toISOString());

jeffreyiacono

class SomeClass < Struct.new(:first_name, :last_name)
   def initialize(first_name, last_name)
     super(first_name, last_name)
   end
end

sc = SomeClass.new("jeff", "iacono")
# => #<struct SomeClass first_name="jeff", last_name="iacono">  

sc['first_name']

jeffreyiacono

function strltrim() {
  return this.replace(/^\s+/,'');
}

function strrtrim() {
  return this.replace(/\s+$/,'');
}

function strtrim() {
  return this.replace(/^\s+/,'').replace(/\s+$/,'');

jeffreyiacono

#!/bin/bash

# usage:
#
# ./pinger-notifier.sh url_1 [url_2 ...]
#
# this use https://github.com/jeffreyiacono/pinger and assumes
# it's setup via the command line (see: https://github.com/jeffreyiacono/pinger#usage)

set -e