# Fun One Liners

**URL:** <https://discourse.julialang.org/t/fun-one-liners/28352>\
**Category:** General Usage\
**Created:** [September 3, 2019, 11:13pm UTC](https://discourse.julialang.org/t/fun-one-liners/28352 "2019-09-03T23:13:18Z")\
**Posts on this page:** 1\
**Showing post:** 56

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**Author:** ![anon92994695](https://avatars.discourse-cdn.com/v4/letter/a/ce7236/32.png) [@anon92994695](https://discourse.julialang.org/u/anon92994695)\
**Post date:** [September 14, 2019, 8:35pm UTC](https://discourse.julialang.org/t/fun-one-liners/28352/56 "2019-09-14T20:35:28Z")

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I think I’ll just continue to define Tau myself rather then import this package. Maybe there’s some elaborate argument why it should be “tau ~ 2pi” but for my uses, it’s just 2pi.

```julia
tau = 2pi

```

Cool to know about mod2pi. Didn’t know it was in the base library, because I had no idea there was a name for this function, the code for it is well, interesting: [https://github.com/JuliaLang/julia/blob/c6da87ff4bc7a855e217856757ad3413cf6d1f79/base/math.jl#L801-L987](https://github.com/JuliaLang/julia/blob/c6da87ff4bc7a855e217856757ad3413cf6d1f79/base/math.jl#L801-L987)  
Guess this is why I’d never call myself a soft-ware engineer!

Here’s another reason why I love Julia:

```julia
"""Convenience function for performing Redheffer Star Products."""
⋆( A, B ) = RedhefferStarProduct( A, B )

```

The above function won’t run on your machine - but, you can define unicode operators for shorthand! So if I wanna Redheffer star some stuff

```julia
F=A⋆B⋆C⋆D⋆E

```

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