# Fixing the Piping/Chaining/Partial Application Issue (Rev 2)

**URL:** <https://discourse.julialang.org/t/fixing-the-piping-chaining-partial-application-issue-rev-2/90408>\
**Category:** Internals & Design\
**Tags:** proposal, piping, chaining, partial-evaluation, threading\
**Created:** [November 17, 2022, 3:36pm UTC](https://discourse.julialang.org/t/fixing-the-piping-chaining-partial-application-issue-rev-2/90408 "2022-11-17T15:36:57Z")\
**Posts on this page:** 1\
**Showing post:** 35

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**Author:** ![uniment](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/uniment/32/24532_2.png) [@uniment](https://discourse.julialang.org/u/uniment)\
**Post date:** [November 23, 2022, 1:37am UTC](https://discourse.julialang.org/t/fixing-the-piping-chaining-partial-application-issue-rev-2/90408/35 "2022-11-23T01:37:25Z")

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As an aside, it’s fun to watch the function composition technique cause the called function get completely decomposed.

```julia
julia> f(x)=√(2x^2+1) > 5
f (generic function with 1 method)

julia> demo"f(_/2)"
>(_, 5) ∘ sqrt(_) ∘ +(_, 1) ∘ *(2, _) ∘ ^(_, 2) ∘ /(_, 2)

```

The constraint being, `f` cannot have any non-function operator (and for my demo, all functions called must be part of a function “whitelist”), and it cannot have `x` appear more than once.

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