# What is the agreed abstraction for the "size" of finite collections?

**URL:** https://discourse.julialang.org/t/what-is-the-agreed-abstraction-for-the-size-of-finite-collections/32757
**Category:** General Usage
**Tags:** question, api, collection
**Created:** [December 28, 2019, 2:48pm UTC](https://discourse.julialang.org/t/what-is-the-agreed-abstraction-for-the-size-of-finite-collections/32757 "2019-12-28T14:48:28Z")
**Posts on this page:** 1
**Showing post:** 25

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### Author: ![juliohm](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/juliohm/32/215266_2.png) [@juliohm](https://discourse.julialang.org/u/juliohm)
#### Post date: [December 30, 2019, 10:18am UTC](https://discourse.julialang.org/t/what-is-the-agreed-abstraction-for-the-size-of-finite-collections/32757/25 "2019-12-30T10:18:05Z")

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A related question that someone just asked here on Discourse that I think is very connected to the discussion here: [How to sample a Data frame](https://discourse.julialang.org/t/how-to-sampling-data-frame/32791) Observe how most people interpret a dataframe like I mentioned above. Pandas has sampling methods to sample “observations” of a dataframe that are stored as rows: [pandas.DataFrame.sample — pandas 1.4.4 documentation](https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.sample.html)

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