#decimal — Public Fediverse posts

DDD в Go без красивых схем: как один платеж получил три курса валют

В какой-то момент у нас один платеж начал жить с тремя курсами валют: checkout показывал сумму из Redis, payment-service ходил в API, а ledger писал проводку по снапшоту из Postgres. Расхождения были 2-5 тенге, иногда до 180. Разбираю, как это дебажили, какие костыли ставили и где DDD реально помог, без красивых схем. Читать статью

https://habr.com/ru/articles/1025226/

#ddd #domaindriven_design #go #golang #архитектура #value_object #aggregate_root #платежи #курсывалют #decimal

Decimal Precision Rounds Numbers?!

DECIMAL precision ROUNDS values! Cast 1.999 to DECIMAL(5,2) and it becomes 2.00. This silent rounding will cause calculation errors!

#sql #sqltricks #decimal #precision #rounding #sqlweird #sqlquiz #codingchallenge #sqlshorts #sqlwtf #datatypes #advancedsql

https://www.youtube.com/watch?v=wNyhCqAhlb8

At www.unicode.org/charts a lot of symbols, characters and so on.
How to insert them in a website? With &#CODE; in the html, where the "CODE" is the decimal translation of the hex in the unicode charts.
A tool to convert from hex to decimal here https://www.binaryhexconverter.com/hex-to-decimal-converter

#unicode #hex #decimal #character #typo #html #web #website #tool #webtool

Dans l’#univers de l’#électronique #numérique et la #programmation, nous faisons parfois recours à un ou plusieurs #systèmes de #codage differents de celui des #systèmes les plus connus tels que le système #binaire, le système #décimal ou le système #hexadécimal! Avec #electro-robot, nous vous proposons de #découvrir tout cela tout en vivant une belle #experience #utilisateur à travers les #différents #exemples #proposés.

https://electro-robot.com/electronique/electronique-numerique/les-codes-et-le-codage

Dans l’#univers de l’#électronique #numérique et la #programmation, nous faisons parfois recours à un ou plusieurs #systèmes de #codage differents de celui des #systèmes les plus connus tels que le système #binaire, le système #décimal ou le système #hexadécimal! Avec #electro-robot, nous vous proposons de #découvrir tout cela tout en vivant une belle #experience #utilisateur à travers les #différents #exemples #proposés.

https://electro-robot.com/electronique/electronique-numerique/les-codes-et-le-codage

Dans l’#univers de l’#électronique #numérique et la #programmation, nous faisons parfois recours à un ou plusieurs #systèmes de #codage differents de celui des #systèmes les plus connus tels que le système #binaire, le système #décimal ou le système #hexadécimal! Avec #electro-robot, nous vous proposons de #découvrir tout cela tout en vivant une belle #experience #utilisateur à travers les #différents #exemples #proposés.

https://electro-robot.com/electronique/electronique-numerique/les-codes-et-le-codage

Dans l’#univers de l’#électronique #numérique et la #programmation, nous faisons parfois recours à un ou plusieurs #systèmes de #codage differents de celui des #systèmes les plus connus tels que le système #binaire, le système #décimal ou le système #hexadécimal! Avec #electro-robot, nous vous proposons de #découvrir tout cela tout en vivant une belle #experience #utilisateur à travers les #différents #exemples #proposés.

https://electro-robot.com/electronique/electronique-numerique/les-codes-et-le-codage

Dans l’#univers de l’#électronique #numérique et la #programmation, nous faisons parfois recours à un ou plusieurs #systèmes de #codage differents de celui des #systèmes les plus connus tels que le système #binaire, le système #décimal ou le système #hexadécimal! Avec #electro-robot, nous vous proposons de #découvrir tout cela tout en vivant une belle #experience #utilisateur à travers les #différents #exemples #proposés.

https://electro-robot.com/electronique/electronique-numerique/les-codes-et-le-codage

Après que nous avons #réalisé un #compteur #binaire avec deux #diodes #LED, une #jaune et une #rouge qui nous #compte de 0 à 3, #Electro-robot vous #propose de #compléter ce premier #circuit #séquentiel en ajoutant un #décodeur #BCD à base du #circuit #intégré #74LS48 et un #afficheur 7 #segments pour réaliser un #compteur #decimal au final. Alors on commence ?

https://electro-robot.com/les-activites/activite-de-decouverte-compteur-decimal-a-base-dun-decodeur-bcd-et-dun-afficheur-sept-segments

#BaseConversion in #mathematics: #Binary #Exponential #Octal #Decimal #Hexadecimal

One day, one decomposition
A257368: Numbers n such that the decimal expansions of both n and n^2 have 2 as smallest digit and 8 as largest digit

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A257368.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A257368.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A257368.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #decimal #expansions #digit #graph #threejs #webGL

One day, one decomposition
A257211: Numbers n such that the decimal expansions of both n and n^2 have 1 as smallest digit and 8 as largest digit

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A257211.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A257211.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A257211.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #decimal #expansions #digit #graph #threejs #webGL

One day, one decomposition
A257210: Numbers n such that the decimal expansions of both n and n^2 have 1 as smallest digit and 7 as largest digit

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A257210.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A257210.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A257210.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #decimal #expansions #digit #graph #threejs #webGL

One day, one decomposition
A256634: Numbers n such that the decimal expansions of both n and n^2 have 0 as smallest digit and 7 as largest digit

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A256634.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A256634.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A256634.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #decimal #expansions #digit #graph #threejs #webGL

One day, one decomposition
A256601: Numbers n such that the decimal expansions of both n and n^2 have 1 as smallest digit and 9 as largest digit

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A256601.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A256601.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A256601.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #decimal #expansions #digit #graph #threejs #webGL

One day, one decomposition
A136333: Numbers containing only digits coprime to 10 in their decimal representation

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A136333.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A136333.html

#decompwlj #math #mathematics #sequence #OEIS #javascript #php #3D #numbers #digits #coprime #decimal #representation #graph #threejs #webGL

One day, one decomposition
A115921: Numbers k such that the decimal digits of phi(k) are a permutation of those of k

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A115921.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A115921.html

#decompwlj #maths #mathematics #sequence #OEIS #javascript #php #3D #decimal #numbers #digits #phi #permutation #graph #threejs #webGL

One day, one decomposition
A102491: Numbers whose base-20 representation can be written with decimal digits

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A102491.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A102491.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #base #representation #decimal #digits #graph #threejs #webGL

One day, one decomposition
A102487: Numbers in base-12 representation that can be written with decimal digits

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A102487.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A102487.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #base #representation #decimal #digits #graph #threejs #webGL

One day, one decomposition
A101594: Numbers with exactly two distinct decimal digits, neither of which is 0

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A101594.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A101594.html

#decompwlj #maths #mathematics #OEIS #javascript #php #3D #numbers #distinct #decimal #digits #graph #threejs #webGL

@volpeon @puniko IMHO #IPv6's notation should've been #decimal like #IPv4 so the entire IPv4 address space would've fit as a #subnet into it, providing us with a transition mechanism that would've allowed backwards compatibility by virtue of addressing every port as a dedicaded IPv6, enabling way faster adoption.

Sadly until EVERYTHING supports IPv6 natively and comes with fixed prefixes (at least a /64 on mobile) that are statically allocated, I can't even use it.

There's a reason I've got a /28 of IPv4's but by ISP won't even delegate me a /48 of IPv6's: Because there is neither demand nor offer for that.

And yes, HE.net's #Tunnelbroker isn't solving issues because even if I choose a PoP in Germany everyone will just blatantly #GeoIP (which on it's own should be illegal IMHO!) one to the #USA, worsening the entire experience by virtue of illegal #Adware and #Tracking...

TL;DR: #decimal is a fine system for people who need to multiply/divide by:

- 2
- 5
- 10

But #dozenal (AKA #duodecimal) is better for folks who multiply/divide by:

- 2
- 3
- 4
- 6
- 12

Basically #dozenalism is the idea that *generally* math would be a hell of a lot simpler if our number base had more (useful) factors, which we can practice by using 12 instead of 10 wherever it's practical.