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View schema_scope.sql
drop schema if exists a cascade;
create schema a;
drop schema if exists b cascade;
create schema b;
create table b.things (id int);
insert into b.things (id) values (1);
insert into b.things (id) values (2);
insert into b.things (id) values (3);
View cqlsh_tz_note.md

Note: cqlsh converts timestamps into current timezone

You can prove this manually:

$ cqlsh
cqlsh> CREATE KEYSPACE mykeyspace WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };
cqlsh> use mykeyspace;
cqlsh> CREATE TABLE objects (id int PRIMARY KEY, name text, date timestamp);
cqlsh> INSERT INTO objects (id, name, date) VALUES (1, 'one', '2010-01-01T00:00:00Z');
cqlsh> SELECT * FROM objects;
View parens_vs_braces.md

I'm going to do my best to parrot things I picked up from the scala course... What you've done here by declaring functions with {} works but I don't think it is the intended syntax. Odersky presented it like this:

() is how you call a function, ie they wrap parameters just like you would expect. If one parameter is a function literal then you get the a form like this:

val nums = List(0,1,0)                          //> nums  : List[Int] = List(0, 1, 0)
nums.map((x) => {x.toString})                   //> res0: List[String] = List(0, 1, 0)
View dance_moves.rb
#!/usr/bin/env ruby
# ruby dance_moves.rb
$stdout.sync
string = "get down"
def dance(move, string)
string = string.send(move)
print "%s\r" % string
sleep 0.3
@thinkerbot
thinkerbot / madlib_example.sql
Last active Oct 5, 2016
MADlib install on ubuntu (partial)
View madlib_example.sql
create temporary sequence predictor_seq;
CREATE temporary TABLE linear_systems_test_data( id INTEGER NOT NULL, lhs DOUBLE PRECISION[], rhs DOUBLE PRECISION);
insert into linear_systems_test_data values (nextval('predictor_seq'), '{352137.0,84.7067061967771,-150.185137392799,122.050417659229,-74.0884874537119,99.7911494563722,-3.7907455558484,181224.690513009,106938.029173016,69336.1362009346,18335.0,12.7007088793537,-250.440511627437,-62.5561474971013,-292.703374755409,-167.012940969203,-78.511449979818,9451.24681999999,5585.85191537643,3628.50938401}'::float[], 88920344.0 );
insert into linear_systems_test_data values (nextval('predictor_seq'), '{84.7067061967771,176105.544243727,61.0252088296143,-73.1971959184637,7.54222162981446,-48.6063990056131,-37.7170700467655,-11006.0678697046,-11871.4874441653,-10787.6157862104,12.7007088793537,9313.85168737771,-31.2780737485506,-85.9645308238089,-89.8568249242787,-78.6462830692247,10.8622991388217,-566.613529886409,-617.49619500345,-565.289335368564}'::float[]
@thinkerbot
thinkerbot / Vagrantfile
Created Jan 29, 2014
Kafka round trip perf test
View Vagrantfile
# -*- mode: ruby -*-
# vi: set ft=ruby :
# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"
Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
# All Vagrant configuration is done here. The most common configuration
# options are documented and commented below. For a complete reference,
# please see the online documentation at vagrantup.com.
@thinkerbot
thinkerbot / thisiswhatyouget.rb
Created Oct 28, 2013
Positive match for files not matching '.*\.example'
View thisiswhatyouget.rb
[
"abc",
"abc.s",
"abc.ex",
"abc.exs",
"abc.exa",
"abc.exas",
"abc.exam",
"abc.exams",
"abc.examp",
@thinkerbot
thinkerbot / config.ru
Created Oct 25, 2013
Rack streaming via puma.
View config.ru
# puma
# curl http://localhost:9292/
#
# Note chrome buffers like 1024 or so... meaning the first lots will look missing.
run lambda { |env|
body = lambda { |io|
io.sync = true
10.times do |i|
View example.rb
#!/usr/bin/env ruby
require "ffi-rzmq"
require "securerandom"
id = SecureRandom.uuid
n = 1000000
endpoint = "ipc://message"
def assert(rc)
@thinkerbot
thinkerbot / psdaisy
Created Sep 12, 2013
Processes blow away thread queues, for the record.
View psdaisy
#!/bin/bash
# time ./test/benchmark/psdaisy
#
# real 0m0.238s
# user 0m0.095s
# sys 0m0.006s
#
# real 0m0.323s
# user 0m0.153s
# sys 0m0.035s
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