Jeff Kreeftmeijer - DEV Community

Jeff Kreeftmeijer for AppSignal

Oct 5 '23

How To Reduce Reductions in Elixir

#elixir #apm

1

6 min read

Jeff Kreeftmeijer

Aug 16 '21

Emacs package management with straight.el and use-package

#emacs

7

1

5 min read

Jeff Kreeftmeijer

Aug 10 '21

Combine Git repositories with unrelated histories

#git

6

2 min read

Jeff Kreeftmeijer

Jun 29 '21

Testing input and output in Rust command line applications

#rust #programming #testing #tdd

18

4 min read

Jeff Kreeftmeijer

Jan 8 '21

Embrace email, mute Slack. A policy for handling incoming messages

#productivity

3

3 min read

Jeff Kreeftmeijer for AppSignal

Aug 13 '19

Multiplayer Go with Elixir's Registry, PubSub and dynamic supervisors

#elixir #phoenix #beginners

66

10 min read

Jeff Kreeftmeijer for AppSignal

Jul 4 '19

Building the Go Game in Elixir: Time Travel and the Ko Rule

#elixir #phoenix #beginners

54

1

9 min read

Jeff Kreeftmeijer for AppSignal

Jun 18 '19

Building and Playing the Go Game with Phoenix LiveView

#elixir #phoenix #beginners

52

7 min read

Jeff Kreeftmeijer for AppSignal

May 28 '19

Inside Enumeration in Ruby

#ruby #beginners #programming

67

6 min read

Jeff Kreeftmeijer for AppSignal

Mar 19 '19

Iteration, recursion, and tail-call optimization in Elixir

#elixir #beginners #programming

52

1

7 min read

Jeff Kreeftmeijer for AppSignal

Feb 5 '19

Unraveling Classes, Instances and Metaclasses in Ruby

#ruby #programming #beginners

45

2

5 min read

Jeff Kreeftmeijer for AppSignal

Jan 22 '19

Serving Plug: Building an Elixir HTTP server from scratch

#elixir #programming

88

9 min read

Jeff Kreeftmeijer for AppSignal

Jan 8 '19

Bindings and Lexical Scope in Ruby

#ruby #programming #beginners

34

5 min read

Jeff Kreeftmeijer

Dec 20 '18

What's your favorite Vim trick?

#discuss #vim #editor #terminal

41

32

1 min read

Jeff Kreeftmeijer for AppSignal

Dec 18 '18

Running Rack: How Ruby HTTP servers run Rails apps

#ruby #rails #programming #coding

90

9 min read

Jeff Kreeftmeijer for AppSignal

Dec 11 '18

Building a 30 line HTTP server in Ruby

#ruby #programming #coding #beginners

88

4

8 min read

Jeff Kreeftmeijer

Nov 29 '18

Consistent terminal colors with 16-ANSI-color Vim themes

#vim #editor #terminal

47

5 min read

Jeff Kreeftmeijer for AppSignal

Oct 16 '18

Hot Code Reloading in Elixir

#elixir #erlang #programming #beginners

49

7

8 min read

Jeff Kreeftmeijer for AppSignal

Sep 18 '18

How OTP Applications are structured

#elixir #beginners #programming #erlang

73

1

4 min read

Jeff Kreeftmeijer for AppSignal

Sep 4 '18

Closures in Ruby: Blocks, Procs and Lambdas

#ruby #programming #beginners #coding

75

3

6 min read

Jeff Kreeftmeijer for AppSignal

Jul 17 '18

JavaScript-sprinkled Rails Applications

#ruby #rails #javascript

46

1

5 min read

Jeff Kreeftmeijer for AppSignal

Jul 10 '18

Under the Hood: “Slurping” and Streaming Files in Ruby

#ruby #learning #beginners #programming

35

2

9 min read

Jeff Kreeftmeijer for AppSignal

Jun 19 '18

Caching counters with ActiveRecord's counter caches

#ruby #rails #optimization #caching

12

6 min read

Jeff Kreeftmeijer for AppSignal

Jun 12 '18

Deconstructing Elixir's GenServers

#elixir #learning #genserver

24

7 min read

Jeff Kreeftmeijer

Jun 5 '18

What's your favorite editor/terminal color scheme?

#discuss #editor #terminal

43

53

1 min read

Jeff Kreeftmeijer

Jun 4 '18

Find, convert and replace dates with Vim substitutions

#vim #editor #regex #productivity

17

3

6 min read

Jeff Kreeftmeijer for AppSignal

May 29 '18

Ruby's magical Enumerable module

#ruby #learning #enumerable

33

2

6 min read

Jeff Kreeftmeijer for AppSignal

May 23 '18

Speeding up your app’s navigation with Turbolinks

#beginners #rails #optimization #javascript

33

2

3 min read

Jeff Kreeftmeijer for AppSignal

May 16 '18

Ensuring execution, retrying failures and reraising exceptions in Ruby

#ruby #exceptions #beginners #learning

40

5 min read

Jeff Kreeftmeijer for AppSignal

May 2 '18

Client-side caching in Rails: conditional GET requests

#beginners #rails #optimization #caching

44

4 min read

Jeff Kreeftmeijer for AppSignal

Apr 25 '18

ActiveRecord performance: the N+1 queries antipattern

#beginners #rails #performance #ruby

69

3

6 min read

Jeff Kreeftmeijer for AppSignal

Apr 18 '18

Rails' built-in cache stores: an overview

#beginners #rails #caching #optimization

13

4 min read

Jeff Kreeftmeijer for AppSignal

Apr 11 '18

Rescuing exceptions in Ruby

#ruby #exceptions #beginners #learning

29

3 min read

Jeff Kreeftmeijer for AppSignal

Apr 4 '18

Russian doll caching in Rails

#performance #caching #optimization #rails

21

5 min read

Jeff Kreeftmeijer for AppSignal

Mar 29 '18

Understanding system load and load averages

#linux #devops #terminal #optimization

71

2

4 min read

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