chensan
iex(4)> Float.parse "9999999999999999"
{1.0e16, ""}
So if I want to get 9999999999999999, what should I do?
Where Next?
Trending in Questions
Hello!
Suppose you are building workflow (order / task / payment) processing system with the following requirements:
Each workflow con...
New
Hey guys,
I’ve got a huge CSV ( around 10 GB ) that needs to be processed hourly
Do you guys have any suggestions what is the best prac...
New
Kia ora,
We have been using elixir-google-api to connect to Google Drive. However, with the updates to Tesla due to CVEs this is now bro...
New
Hello!
Could someone please give me a help/sample code, how to delete a file from s3 using waffle/waffle_ecto from Phoenix app.
I creat...
New
I have what I’ve heard referred to as a “lookup table” in my database. This is a way of assigning codes to common values. One common lo...
New
Hello,
I’m developing a online persistent chat system (what’s app) like using elixir/dynamodb/aws for a mobile app(flutter).
The diffic...
New
What approach to take when sending live updates to “random” users Hi! I have a question, I have a little chat app, and when I create a DM...
New
Other Trending Topics
Hobbes is a low-level distributed database for the Elixir programming language.
Hobbes provides a simple, safe, and scalable storage lay...
New
ExRatatui lets you cook up rich terminal UIs in Elixir, powered by Rust’s ratatui via Rustler NIFs. Build interactive terminal applicatio...
New
Hello everyone. After busy few months I am happy to announce v0.1.0 of Emerge & Solve.
They are GUI (Emerge) and State management (S...
New
Corex is an accessible, unstyled UI component library for Phoenix that integrates Zag.js state machines using Vanilla JavaScript and Live...
New
There are three potential reasons for members of this forum to have a look at https://vutuv.de
You are tired or annoyed of LinkedIn.
Yo...
New
ICal is a library for interacting with iCalendar data. It parses iCalendars into typed Elixir structs via ICal.from_ics, and can prepare ...
New
Latest on Elixir Forum
Sponsor Spotlight
Catch errors, track performance, monitor hosts and more.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #deployment
- #library
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #javascript
- #podcasts
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #elixir-ls
- #blog-post
- #ai
- #phoenix_html
- #elixirconf-us
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #api
- #forms
- #hex
- #security
- #metaprogramming
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Bringing learning, work and compliance together since 1987.
Producing high quality Elixir screencasts since 2017.
The deployment platform built for Elixir: PaaS ease, VPS control.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Showing Posts 1 to 4- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
LostKobrakai
Not use Floats. Floats are just an approximation, not a correct number. Which is why one should never use floats for money values. You could either use integers or decimal numbers.
chensan
Thanks, I found a similar comment here Decimal support · Issue #1347 · phoenixframework/phoenix · GitHub, will try decimal.
NobbZ
Why not
Integer?Decimals have some computational and memory overhead, because they are structs that consist of three values: The hole number part, the fraction part and the precision. For all computations made onDecimalthey have to be weighed against each other.If you do not expect fractions to occur, use an
Integer, if you expect fractions to occur but you do also know that they will always have the same precision, use a taggedInteger(eg.{:money, 1000}for 10$) and write some functions to use it.rvirding
You can find a number of good articles on the net describing floats and the problems with them. For example: