Experiment PowerShell Pwsh7+

Experiments of 2022-04

FdFind, Ansi Colors with Group-Object

# [3] main + UX for long exxtensions + Horizontal rules
fd --color=always --changed-within=10hours
| group { 
    $strExt = $_ | StripAnsi | gi | % Extension
    # QOL: don't let massive names break the table
    if($strExt.Length -gt 10) { $strExt.Substring(0, 10) } else {$strExt}
| %{ $_ ; hr }
| ft -AutoSize
# [1] Minimum required
fd --color=always --changed-within=10hours
| group { $_ | StripAnsi | gi | % Extension }
| ft -AutoSize
# [2] UX: Don't let super long extensions break break columns
fd --color=always --changed-within=10hours
| group {
    $strExt = $_ | StripAnsi | gi | % Extension
    if($strExt.Length -gt 10) { $strExt.Substring(0, 10) } else {$strExt}
| ft -AutoSize

Using wt‘s Parameters
PS> ZD-Invoke-WtThemeTest -Random
PS> wt -w theme-test new-tab --title "Tango Light" --profile 'pwsh_nop' --colorScheme "Tango Dark"
PS> wt -w theme-test new-tab --title "Tango Light" --profile 'pwsh_nop' --colorScheme "BirdsOfParadise"

# or
ZD-Invoke-WtThemeTest -Random

Nested Formatting in Powershell

Using module Pansies
What not to do 🙂

CLI bat to preview results

# For every file fd finds, print the first 15 lines
PS> fd --exec-batch bat --line-range=:15 --paging=always

# forcing paging /on/off
PS> fd --exec-batch bat --line-range=:15 --paging=never

Regex Lazy vs Greedy Expressions

Using CSS Selectors

selector 'div.premium-box span.btn.btn-info'

Autocomplete changes based on the first Argument

Parsing Stdout Whitespace

Grouping On Errors

Type Resolution Is Scoped

Pwsh🐒> # test whether it's resolved by coerce to [type]
    'catman' -as 'type' -is 'type'
    'batman' -as 'type' -is 'type'
Pwsh🐒> # test whether it's resolved by coerce to [type]
    'catman' -as 'type' -is 'type'
    'batman' -as 'type' -is 'type'

# after 

Pwsh🐒> @(
    # Declaring a new type in inside a [ScriptBlock]
    & {
        class batman { [string]$Name }

    # verses dotsourcing a type into the current scope
    . {
       class catman { [string]$Name }
    }) | ft -AutoSize

   Namespace: <4cf9efd5>

Access Modifiers Name   BaseType
------ --------- ----   --------
public class     batman object

   Namespace: <f2200555>

Access Modifiers Name   BaseType
------ --------- ----   --------
public class     catman object
Command Line Experiment

Experiments / Answers of 2022-02

File Selection CLI

Revisiting BASH

echo -e \\033[{0..100}mhiworld
delegating file path queries to fd
> grep -c '.*' -- $(fd -e ps1 -e txt -d 1)   # ext:ps1,txt depth: 1

# using long-names
> fd --extension ps1 --extension txt --max-depth 1
# 1] highlight matches in red
# 2] preserves all lines
> history | grep --perl-regex --ignore-case --color=always 'less|$'

# 3] add paging 
> history | grep --perl-regex --ignore-case --color=always 'less|$' | less --raw-control-chars

# 4] View a log 
> less someLog

# 5 start on the last line of a log
> less +G someLog

See more

Detect Valid Values for gh --json — then Fzf filter them

$allProperties ??= _enumerateGhProperty
$selectedProps = $allProperties
| Out-Fzf -MultiSelect -Layout reverse -Height 100

Invoke-GhRepoList -prop $selectedProps

PowerApps: Visualize filter in Queries

Is there a way to add columns Programically to many queries?

Labeled Summary of all queries

    Source = Record.RemoveFields(
        "AllQueries", MissingField.Error
    Summary = Record.ToTable( Source ),
    OnlyTables = Table.SelectRows(
        Summary, each Value.Is( [Value], Table.Type )
    #"Add Query Id" = Table.AddIndexColumn(OnlyTables, "Query Id", 0, 1, Int64.Type)
    #"Add Query Id"


Code Syntax Highlighting

when $null + 3 + 3 = 12

TM tokens accepts colors in the format #RRGGBB or #RRGGBBAA, you can set alpha to 0%
{ "editor.tokenColorCustomizations": {
    "textMateRules": [
      "name": "test1",
        "scope": "keyword.operator.assignment.powershell",
        "settings": {
        "foreground": "#be85c5",
        "foreground": "#be85c500",
        "fontStyle": "underline"

Random Power Query

Power Query Sugar for selecting distinct filters. If the condition is not true, then it throws an error. Name = "Orders" works because it results in a distinct value from the column Name It’s valid even though the final query is many records. It’s the “distinctness” of the filter that is required to be true

Source{ [Name = "Orders", Signature = "table"] }

Random Powershell

Random VS Code

Random CSS / Web

Regular Expression Engine

CSS Column Selectors to modify an existing table

Refactoring Others Code

Bash Examples

# session

## counting
| wc --lines
| wc --bytes

# hide long results
| tail -n 10
| head -n 10

| tail --lines=100
| tail --bytes=2MB

# or instead don't print to console
# allow colors, but no other ANSI codes
| tail -R

# file listings safer to use
# `ls` output is bad / breakable
find . -iname 'foo*'
find . -iname '*.py'

# as 1 call ?
find . -iname '*.py' -exec stat {} \;
# as many   ?
find . -iname '*.py' -exec stat {} +

# require pattern
| grep -i 'required pattern'

# invert matches
| grep -iv 'not pattern'

# or xargs and with args that have whitespace
# and/or exec

# output to file (truncate)
foo > bar.log

# append to file
foo >> bar.log

# hide errors
> someCommand &2>/dev/null

history | grep 'find'

# view in pager, or just a few results
# too big of file
grep 'error' apache.log | less +G
grep 'error' apache.log | tail | less
grep 'error' apache.log > apache_errors.log

tail apache.log --lines=100 | less +G
tail apache.log --lines=100 > apache_mini.log
Command Line Experiment Formatting Power BI Power Query VS Code

Experiments of 2021-10

Pwsh: Fuzzy Select Colors With Preview

PS> Get-ChildItem fg: | Where Name -match ‘red’
  • queries the color provider with partial matches
  • pipes to Out-Fzf or fzf for the preview and selection

Bitwise operators

Generated using a Pwsh script

ShouldProcess formatting

More Fzf

PSReadline: Auto-expand Aliases in the CLI

  • alt+shift+( surrounds selection, or the entire command in parenthesis
  • alt+shift+% runs Invoke-Formatter to format the code, including alias replacement

Pester5 ForEach | `code` snippet

Using Notebooks: for Github issue queries

Created a list of queries for the release of
ninmonkey/VS Code on the Web – Cheat Sheet – Custom

Power Query Web.Contents wrapper for Web API / REST calls

  • WebRequest_Simple.pq
  • enables ManualStatusHandling for better errors ( This is important for any REST APIs)
  • detects whether it’s Json or html, and returns a json record if existing
  • Always displays the response as plain-text as response_text
  • Lets you inspect request info, like headers used.

Power Query: Import from an external file

Experimenting with console formatting

Select a ton of properties, saving names as an array

Hashtables: Command line formatting

DAX: Syntax highlight bracket pairs

    "[dax-language]": {
        "editor.bracketPairColorization.enabled": true, //colorize the pairs
        "editor.guides.bracketPairs": true, // colorize vertical lines
        "editor.matchBrackets": "always",
        "editor.minimap.enabled": false,
        "editor.lineNumbers": "off",

Pwsh: Prompt that summarizes recent errors

Pwsh: Colorized Directory Listing

  • Using terminal wt, Pwsh as the shell, and module: pansies for color
  • The current directory is a gradient, the boldest part is the most important part of the path.
  • cd-ing to a directory will summarize the new directory, without “spamming” the user when there’s a lot of items
    • Folders first, sorted by most recently modified
    • Files second, sorted most recently
    • Icon shows filetype

DAX: Conditionally Toggle Button using Measure

WordPress Image scaling

link to 1:1 image
link to 1:1 image