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##
# Given two sets A and B, returns a triple with the set of elements
# in A only, in both and in B only.
#
symmetricDiff = (setA, setB) ->
  [inAOnly, inBoth, inBOnly] = [new Set(), new Set(), new Set()]
  setA.forEach (eid) ->
    (if setB.has( eid) then inBoth else inAOnly).add eid
  setB.forEach (eid) ->
    inBOnly.add( eid) unless inBoth.has( eid)

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# Defines and exports a custom GraphQL scalar type that represents date and time,
# which, while serialized as a string, promises to conform to ISO‐8601 format.
# (adapted from https://github.com/soundtrackyourbrand/graphql-custom-datetype)

graphql = require 'graphql'
graphql_language = require 'graphql/language'
graphql_error = require 'graphql/error'

GraphQLScalarType = graphql.GraphQLScalarType
GraphQLError = graphql_error.GraphQLError

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using System.Reflection;

System.Type type = System.Type.GetType( "Mono.Runtime");
if( type != null) {
  MethodInfo displayName = type.GetMethod( "GetDisplayName", BindingFlags.NonPublic|BindingFlags.Static);
  if( displayName != null)
    Debug.Log( "Mono Runtime version" + displayName.Invoke(null,null));
}

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using UnityEngine;
using System.Collections;

[ExecuteInEditMode]
public class ShowTransforms : MonoBehaviour {
	private const float radius = 0.02f;

	void OnDrawGizmosSelected() {
		Vector3 origin, axisRight, axisForward, axisUp;

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Resume of the build instructions found in the Neo4j project page on GitHub.

### Compiling

$ export MAVEN_OPTS="-Xmx512m"
$ cd neo4j/community/
$ mvn [clean] install -Dlicense.skip=true -DskipTests

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### Running the Neo4j GraphViz module

The quotes around the nodeTitle, relationshipTitle and nodePropertyFilter must be escaped on the shell command-line, to get them to the graphviz main class:

$ ./graphviz ~/neo4j/data/graph.db \
             relationshipTitle=\"@type\" nodePropertyFilter=name

or

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To transform the currently opened Graphviz source file (in DOT Language) into a PNG:

{
    "cmd": [ "dot", "-Tpng", "-o", "$file_base_name.png", "$file"],
    "selector": "source.dot"
}

Usage

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(ns accounting.factory.transaction
  (:require [accounting.model.transaction :as transaction]
            [accounting.model.document    :as document]
            [accounting.model.movement    :as movement])
  (:import  [accounting.model.transaction Transaction]
            [accounting.model.document    Document]
            [org.joda.time                LocalDate]))

(defn create-exchange-difference
  ^Transaction