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A collection of 237 posts

Redis Pipeline Commands

Wanted to send a set of commands to redis from the command line and the following techniques work. Working on the slot 1 database of redis here as specified by the -n 1 parameter. With sample commands to flush the cache and then exit. You can chain the commands to

Delete merged branches Powershell

If you have a lot of branches and want to determine which ones can be deleted because it has been merged to more permanent branches like master, main, dev, release. Look for the --merged branches and then filter out branches not to delete git branch --merged | %{$_.trim()} | ?{$_ -notmatch 'dev' -and

Cross-site request forgery: Webforms

Working through a legacy application that needs to post data using jQuery ajax to a controller service endpoint that validates against valid against crsf tokens Find the master pageEmbed the appropriately generated text/html with this helper method <%= AntiForgery.GetHtml() %>Example <body> <%= AntiForgery.GetHtml() %>

Find references MySql table

Got a foreign key reference unable to delete a record from a table in MySql This error in particular MYSQL ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails Error code 1217 This query will show the possible references that would cause this interdependency

PowerShellGet - Why won't it update

Fighting with trying to get the latest version of PowerShellGet on my Windows machine because I wanted to prettify my prompt You will quickly realize the issue when you try to use an unknown parameter when installing modules i.e. AllowPrerelease In this case I ran this command Install-Module PSReadLine

Reload prompts

Bashsource ~/.bash_profile Powershell& $profile CMDrefreshenv Install chocolatey to get this

Data Ingestion: Pandas/Vaex Presentation

There is a lot of Data2.5 quintillion bytes of data are created every day (2020)90% of all the data ever created has happened in the last 2 yearsVolume of data is doubling every 2 yearsIngesting/AnalyzingPython/Pandas is the defacto standard for data analysis and fast importFull featured

Windows Subsystem of Linux 2: DNS lost

Windows Subsystem for Linux 2 (WSL2) keeps losing domain name resolution for me. Why is this?Two reasons I think, first reason is as it doesn't have a init setup that works with cronjobs. Example of what I am talking about is here, there are workarounds explored other places. sudo

Local DynamoDB in WSL2

Install latest AWS Command Line InterfaceInstall UbuntuDownload the local DynamoDB jarUnzip the file to a folder like C:\dynamodb or if you are already in Ubuntu WSL2 /mnt/c/dynamodbCheck your java version. Looks like I'm good to go. I used this to get a modern compatible versionrobin@wasp:/mnt/

Node Update: Ubuntu

Wanted to update to latest stable node version for my ubuntu server 20.04 Command: lsb_release -aNo LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04.4 LTS Release: 20.04 Codename: focalClear the npm cache: npm cache clean -fInstall n : npm install -g nFind versions of

JavaScript object deep cloning: 3 ways

Deep cloning in JavaScript Spread operator ... Use the JavaScript spread operator like so const source = { b: 4, c: 5 }; const target = { ...source }; console.log(target);Results: > Object { b: 4, c: 5 } Object.assignconst source = { b: 4, c: 5 }; const target = Object.assign({}, source); console.log(target);Results: > Object

C# Unicode Count Frequency no dependencies

To do the lookup initialization correctly to match on int codes only add the function public static IEnumerable<KeyValuePair<int, int>> ExpectedLookupCodes(string element, int total) { return element.ToCharArray().Select(componentChar => new KeyValuePair<int, int>((int)componentChar, total)) .ToList(); }What happens is the

Language Phenotypes: C#, SQL, Python - Part 5

Doing a count uniques function and the choice of language really shows some deep decisions on the part of the designers of said language. In this case I will show the answers in C# and Python Given the problemReturn the set of elements in a string with the frequency of

Language phenotypes: SQL - Part 4

Doing a second part on this now where I do the same as Part 3 SQL with python and sql, again the core of the solving of the problem is using set functionality in SQL. Again this will be CoderPad compatible Problem 1: Contains AllNormally you would you fix up

HTML5 Notifications

Call requestNotifyPermission at the DOM load of your particular page and then because you have to ask the users permission to send them notifications. It will looks something similar to this (this is from Google Calendar) stick notify('Message') wherever you want to display a HTML5 notification function requestNotifyPermission() { if

Find commits

Need to find commits from numerous git repositories I have on a windows machine. cd "best_code_ever" echo "best_code_ever" >> ..\commits.txt git checkout master git pull git log --pretty=format:"%ad - %an: %s" --after="2020-12-31" --author="Siliconrob@siliconheaven.net" >> ..\commits.txt cd

Language phenotypes: SQL - Part 3

Thinking about the coding questions I have been given to solve using limited tools and well I think I can bypass the tooling issue by being creative. CoderPad will allow you to use databases (it's kind of a feature most people wouldn't use to solve iterative problems, but think functionally

Language phenotypes: Python, C# - Part 2

Doing a input/supply check function on coderpad.io which supports 30+ languages, but in actuality a language is only as good as its tools and libraries and in that respect coderpad.io is sorely lacking on many of the languages it supports. In truth coderpad.io is built for

Distributed Work – Next levels

Do Software as a Service developers and companies go into the physical data centers to work together? No, they work remotely from the datacenter and securely connect in and create wonders. Now is the time where we could stretch the collaborative nature of our work into higher levels i.e.

Polyglot Language Use

Why? It is not a wow this is nice feature, but the ability to use new popular languages expands knowledge and helps define services clearer. The languages themselves are built of common constructs, but each has its own strengths and weaknesses Point 1 - JavaScript is used everywhere and in

Software Rot

Mindset of software as limits to end users and management. Use software expiration dates (use feature flags to force it if you want). I have asked for this many times before in other places and in summary the idea is the same as any physical product. Wood rots, iron rusts,

Powershell UUID

Want to generate UUID on Windows and it is painful compared to Linux where if you use Debian it's uuidgen on mac OS you probably have it under dbus-uuidgen | pbcopy i.e. cat uuidgen or echo uuidgen | setclip if you have xclip configured Or you could do the slapdash easy

Language phenotypes: Python, C#

Doing a bucketing exercise on coderpad.io which supports 30+ languages, but in actuality a language is only as good as its tools and libraries and in that respect coderpad.io is sorely lacking on many of the languages it supports. In truth coderpad.io is built for Python, Javascript,

Advent of Code

Currently expanding my python knowledge by doing Advent of Code 2021. This forces me to look up a lot of python libraries and syntax, but I feel like I am really getting a pythonic mindset now. Learning a lot about pandas, numpy, and other libraries. I did the same last

Run As User

In Linux/macOS you use the su command Windows does not have this and the closest thing it has is runas with /user option. It will then prompt you for the password of this particular user. Key point here is that most likely you will want to use the /netonly