justinpitts

case class RemoteIteratorWrapper[T](underlying: org.apache.hadoop.fs.RemoteIterator[T]) extends scala.collection.AbstractIterator[T] with scala.collection.Iterator[T] {
  def hasNext = underlying.hasNext
  def next() = underlying.next()
}

object Conversions {
  implicit def remoteIterator2ScalaIterator[T](underlying: org.apache.hadoop.fs.RemoteIterator[T]) : scala.collection.Iterator[T] = RemoteIteratorWrapper[T](underlying)
}

justinpitts

Direct links to free Springer maths books (pdf versions)

duplicates = multiple editions

A Classical Introduction to Modern Number Theory,Kenneth IrelandMichael Rosen

A Classical Introduction to Modern Number Theory,Kenneth IrelandMichael Rosen

A Course in Arithmetic,Jean-Pierre Serre

justinpitts

console.log('Loading event');
var AWS = require('aws-sdk');
var dynamodb = new AWS.DynamoDB({apiVersion: '2012-08-10'});

exports.handler = function(event, context) {
    console.log("Event data:");
    console.log(JSON.stringify(event, null, '  '));
    dynamodb.listTables(function(err, data) {
      console.log(JSON.stringify(data, null, '  '));

justinpitts

SELECT 
    DB_NAME(d.database_id) AS database_name
  , LEFT (PARSENAME(d.statement, 1), 32) AS table_name
  , ISNULL (d.equality_columns , '') AS equality_columns
  , ISNULL (d.inequality_columns , '') AS inequality_columns
  , ISNULL (d.included_columns , '') AS include_columns

  , s.avg_total_user_cost	-- This column represent the average total user cost each time when the user query was executed
  , s.avg_user_impact		-- This column represents the value in percentages. It informs us the amount of improvement which you can get if the index is created. 
  , s.unique_compiles