# Is it okay to learn only Julia, no other language

**URL:** <https://discourse.julialang.org/t/is-it-okay-to-learn-only-julia-no-other-language/117139>\
**Category:** New to Julia\
**Tags:** question\
**Created:** [July 17, 2024, 1:01pm UTC](https://discourse.julialang.org/t/is-it-okay-to-learn-only-julia-no-other-language/117139 "2024-07-17T13:01:06Z")\
**Posts on this page:** 2\
**Page:** 2

<div class="post-metadata">

**Author:** ![Anil\_Beniwal](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/anil_beniwal/32/217938_2.png) [@Anil\_Beniwal](https://discourse.julialang.org/u/Anil_Beniwal)\
**Post date:** [July 9, 2025, 3:43pm UTC](https://discourse.julialang.org/t/is-it-okay-to-learn-only-julia-no-other-language/117139/21 "2025-07-09T15:43:27Z")

</div>

Yeah I agree with you unicode was added for better readability of code. My question is can I write something like this

 ![images](https://global.discourse-cdn.com/julialang/original/3X/8/8/88a40f5f3494bd1202f25e5630e8a6b3f0f2b478.jpeg)  
in Rust language with some font ligature as per this [reddit post](https://www.reddit.com/r/rust/comments/1iw2ovd/font_for_programming_mathematics/)  
 ![images](https://global.discourse-cdn.com/julialang/original/3X/8/f/8f06b5db198166a0fb816008542692277f97fccc.png)  
. If I was a mathematician I would say Julia code is very close to mathematical representation.

---

<div class="post-metadata">

**Author:** ![Jeff\_Emanuel](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jeff_emanuel/32/15440_2.png) [@Jeff\_Emanuel](https://discourse.julialang.org/u/Jeff_Emanuel)\
**Post date:** [July 9, 2025, 5:08pm UTC](https://discourse.julialang.org/t/is-it-okay-to-learn-only-julia-no-other-language/117139/22 "2025-07-09T17:08:48Z")

</div>

Rust identifier grammar: [Identifiers - The Rust Reference](https://doc.rust-lang.org/reference/identifiers.html)

which means that an identifier must start with a member of the Unicode lexical class XID\_START and may be followed by members of Unicode lexical class XID\_CONTINUE. Those are summarized here: [UAX #31: Unicode Identifiers and Syntax](https://www.unicode.org/reports/tr31/#Table_Lexical_Classes_for_Identifiers)

Go does similarly. It restricts an identifier to start with \_ or a Unicode letter class followed by \_, Unicode letters, or Unicode digits. [The Go Programming Language Specification - The Go Programming Language](https://go.dev/ref/spec#Identifiers)

Julia is more lenient about which classes may be within identifiers [Variables · The Julia Language](https://docs.julialang.org/en/v1/manual/variables/#man-allowed-variable-names). Your code apparently uses an integral sign as a function name, but the integral symbol is in the Unicode math symbols class. You couldn’t do that in Rust or Go, or probably most any other language that supports Unicode in identifiers.

[Previous page](https://discourse.julialang.org/t/is-it-okay-to-learn-only-julia-no-other-language/117139.md?page=1)