lancearlaus’s gists

lancearlaus / merkle.groovy

Last active September 9, 2017 02:55

Demonstrate Merkle trees by "Merklizing" the words of a sentence supplied as command line arguments

	#!/usr/local/bin/groovy

	/*
	* Demonstrate Merkle trees by "Merklizing" the words of a sentence supplied as command line arguments
	* Example: merkle The dog jumped over the moon
	*/

	HASHPREFIXLEN = 8

	static byte[] hash(List<byte[]> input) {

lancearlaus / JIRA-XMind-BulkCreate-configuration.txt

Last active June 10, 2017 14:37

XMind to JIRA CSV Import Mapping Utility

	{
	"config.version" : "2.0",
	"config.project.from.csv" : "false",
	"config.encoding" : "UTF-8",
	"config.file.id" : "0255121b-e22c-4833-8f8f-6cdfade1c986",
	"config.email.suffix" : "@",
	"config.file.name" : "XMind.csv",
	"config.field.mappings" : {
	"Issue Type" : {
	"jira.field" : "issuetype",

lancearlaus / parse_sort_filenames.sh

Last active May 21, 2016 20:30

Parse and sort file names using awk

	# Given the following list of files, sort by numeric index
	# ls
	# V10__allocate_utxo_function.sql
	# V11__change_asset_ledger_id.sql
	# V12__add_quantity_to_obligation.sql
	# V13__allocate_sufficient_utxos_function.sql
	# V14__add_spender_to_utxo.sql
	# V15__drop_account_lookahead.sql
	# V16__create_keychain.sql
	# V1__create_asset_table.sql

lancearlaus / windowed-max-sample.scala

Last active January 13, 2016 15:50

Sample code to find the windowed max in a series of numbers

	import org.scalatest.{Matchers, WordSpec}


	object SeqOps {

	// Adds windowing operations to sequences
	implicit class WindowOps[A](val seq: Seq[A]) extends AnyVal {

	def windowedMax[T, X](window: T)(t: A => T, x: A => X)(implicit numeric: Numeric[T], ordering: Ordering[X]): Seq[A] =
	seq.tail.scanLeft(Seq(seq.head)) { case (s, cur) =>

lancearlaus / akka-user-stream-ack.scala

Last active September 22, 2015 15:19

Akka user list examples

	#!/usr/bin/env scalas

	// NOTE: This is a self-encapsulated Scala script meant to be run with scalas
	// See http://www.scala-sbt.org/0.13/docs/Scripts.html

	/***
	scalaVersion := "2.11.6"

	resolvers += Resolver.url("typesafe-ivy-repo", url("http://typesafe.artifactoryonline.com/typesafe/releases"))(Resolver.ivyStylePatterns)

lancearlaus / akka-user-stream-sequential.scala

Last active August 29, 2015 14:26

	#!/usr/bin/env scalas

	// NOTE: This is a self-encapsulated Scala script meant to be run with scalas
	// See http://www.scala-sbt.org/0.13/docs/Scripts.html

	/***
	scalaVersion := "2.11.6"

	resolvers += Resolver.url("typesafe-ivy-repo", url("http://typesafe.artifactoryonline.com/typesafe/releases"))(Resolver.ivyStylePatterns)

lancearlaus / 2015-05-27-Akka-Streams-Balancing-Buffer.scala

Last active August 29, 2015 14:22

	#!/usr/bin/env scalas

	// NOTE: This is a self-encapsulated Scala script meant to be run with scalas
	// See http://www.scala-sbt.org/0.13/docs/Scripts.html

	/***
	scalaVersion := "2.11.6"

	resolvers += Resolver.url("typesafe-ivy-repo", url("http://typesafe.artifactoryonline.com/typesafe/releases"))(Resolver.ivyStylePatterns)

lancearlaus / Beyond-the-Pipe.scala

Last active August 29, 2015 14:21

Blog code snippets

	#!/usr/bin/env scalas

	// NOTE: This is a self-encapsulated Scala script meant to be run with scalas
	// See http://www.scala-sbt.org/0.13/docs/Scripts.html

	/***
	scalaVersion := "2.11.6"

	resolvers += Resolver.url("typesafe-ivy-repo", url("http://typesafe.artifactoryonline.com/typesafe/releases"))(Resolver.ivyStylePatterns)

lancearlaus / ssoadm_commands.groovy

Last active August 29, 2015 14:20

OpenAM ssoadm commands meta-data extraction

	@GrabResolver(name='maven.forgerock.org-releases', root='http://maven.forgerock.org/repo/releases')
	@GrabResolver(name='maven.forgerock.org-dependencies', root='http://maven.forgerock.org/repo/openam-dependencies')
	@Grapes([
	@Grab(group='org.yaml', module='snakeyaml', version='1.15'),
	@Grab('org.forgerock.openam:openam-cli-definitions:11.0.0'),
	//@Grab('org.forgerock.openam:openam-cli-impl:11.0.0'), // Uncomment to gain access to implementation class (implClassName)
	])
	import org.yaml.snakeyaml.Yaml
	import com.sun.identity.cli.annotation.SubCommandInfo
	import com.sun.identity.cli.definition.AccessManager

lancearlaus / Ordered.scala

Last active August 29, 2015 14:20

Akka streams PushStage that enforces element ordering

	/**
	* Enforces ordering on a stream, supporting ascending/descending and strict/non-strict options.
	*
	* This push stage accepts elements of type `T` and emits elements of type `Either[T, T]`.
	* Emitted elements will be of type `Right` if properly ordered or of type `Left` otherwise.
	* The stream of Right elements is guaranteed to have proper ordering semantics.
	*
	* For example, given ascending strict ordering, this stage will emit the following sequence of elements for the given stream.
	* Note that the second C element is rejected since ordering only considers valid elements, not invalid intermediate elements.
	*

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