KL-7

One-liners

Reverse every line:

Input file:

$ cat foo
qwe
123

bar

helena

// Start by adding these
import scala.util.{ Try, Success, Failure }

/**
 * Sample runs code that raises the exception:
 * java.lang.ArithmeticException: / by zero
 */ 
object Sample {

  def main(args: Array[String]): Unit = {

madlep

class Either
  def self.pure(value)
    Right.new(value)
  end

  class Left
    def initialize(left)
      @left = left
    end

bitemyapp

Fire up ghci. Make the text real big. Always show the types for everything as you go!

Takes ~1 hour generally.

Note: if you object to "uncertainty" (evocative of data/value flow possibilities), consider wording like "simultaneously possible values". It's a reference to how the compiler won't know whether Maybe a is a Just a or a Nothing statically. Don't blather at me about dependent types; I know.

Alternate verbiage for uncertainty: product - simultaneous altogetherness, sum - simultaneous singlehood. Also consider what the category theoretic diagrams look like. Can be instructive.

Suggestions taken under advisement.

nu7hatch

...

module Helpers
  # Replace standard input with faked one StringIO. 
  def fake_stdin(*args)
    begin
      $stdin = StringIO.new
      $stdin.puts(args.shift) until args.empty?
      $stdin.rewind
      yield

gatlin

Writing a billing system in Haskell, using Stripe and Heroku
===

*This post is written in literate Haskell, meaning the source can be turned
into a blogpost or a working program. You can view the [source][source].

[source]: https://gist.github.com/gatlin/7754289

Normally clients pay me with checks, but recently one informed me that they
really really really like *really really* super prefer some kind of online

gbrayut

#Bosun unit file at /etc/systemd/system/bosun.service
[Unit]
Description=Bosun Service
After=network.target
After=docker.service
After=rsyslog.service

[Service]
Type=simple
User=root

velvia

* See all current contexts
* For each context see all the jobs that are running
* History of past jobs for a given context.  Actually this is not technically available via API; but history of past jobs
* Be able to see configuration for each job present or past (this is available via a tiny "C" link in current UI)
* Job results
* Link to Spark UI for detailed analysis

havenwood

diff --git a/vm_opts.h b/vm_opts.h
index b67e254..3e3935a 100644
--- a/vm_opts.h
+++ b/vm_opts.h
@@ -18,8 +18,8 @@
  * Following definitions are default values.
  */
 
-#define OPT_TRACE_INSTRUCTION        1
-#define OPT_TAILCALL_OPTIMIZATION    0

robwormald

var gulp   = require( 'gulp' ),
    server = require( 'gulp-develop-server' );

// run server
gulp.task( 'server:start', function() {
    server.listen( { path: './app.js' } );
});

// restart server if app.js changed
gulp.task( 'server:restart', function() {