GithubHelp home page GithubHelp logo

Comments (3)

universalmind303 avatar universalmind303 commented on June 10, 2024 2

when using strings, you need to use lit

df.filter(pl.col("foo").eq(pl.lit("b"))

from nodejs-polars.

daolanfler avatar daolanfler commented on June 10, 2024 1

I think the filter api's doc needs an update. it's not using pl.lit when comparing strings ....
image

from nodejs-polars.

badele avatar badele commented on June 10, 2024

I'm using Polars with JavaScript (Deno). I spent a considerable amount of time searching through the documentation before stumbling upon this issue (it was the last test I performed before deciding to stop using Polars).

It seems necessary to either create an alias like compareString or clearly state in the documentation that, since the Polar version for Node.js, it is now required to use the following code:

const scan = await pl.scanCSV("database/.export/symbols_history.csv", {
  sep: ";",
  quoteChar: '"',
  parseDates: true,
}).select(["SYMBOL", "DATE", "Industry", "price"])
  .filter(
    pl.col("SYMBOL").eq(pl.lit("AI")),
  )
  .collect();

This could prevent any confusion and facilitate the transition to the new Polar practices."

from nodejs-polars.

Related Issues (20)

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.