Many APL/J/K comments on the internet are “here’s my unreadable one-liner /splat/”, and it might be nice if people shared more of their thought processes. Ideally experts would do it, but I’m a novice and I can only write my point of view. I’m playing with the free NARS2000 version (download here).

Jordan Borean has come up with a way to get to “Previous Versions” of network shares using Powershell!

For my previous Google Authenticator post, the secret codes involved (e.g. 5WYYADYB5DK2BIOV) are BASE32 encoded data. I want to write about how I did that in Powershell, but you might need to know what an encoding is first.

```powershell PS C:> Import-Module c:\downloads\GoogleAuthenticator.psm1 PS C:> Get-GoogleAuthenticatorPin -Secret XSFOC6D37UW6JOJ5 | Format-List

The tool RANCID from Shrubbery Networks, inc. will login to network switches and get their current configuration, ‘diff’ it against previous configuration, email you with any changes, and save the configuration to a version control system (cvs, svn or git).

Taking Day 1 code from 3.1 seconds to ~63ms.

The Advent of Code Day 8 puzzle starts with a single line of integers, and asks you to parse a tree out of it. My code is here, and my input data is here; this blog post is about how I tweaked it from 1.1 seconds runtime to 0.205 seconds runtime.

Some background and context for how Joel’s PowerShell issue 8407 was found and fixed.

Someone

Programmers argue about whether arrays start at 1 or 0. (Read more about which languages use which here on WikiPedia)

Keeping this post so I can look up how it works.