# Method Madness
**URL:** https://discourse.julialang.org/t/method-madness/67361
**Category:** New to Julia
**Created:** [August 30, 2021, 2:54pm UTC](https://discourse.julialang.org/t/method-madness/67361 "2021-08-30T14:54:04Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@cybervigilante](https://discourse.julialang.org/u/cybervigilante)
#### Post date: [August 30, 2021, 2:54pm UTC](https://discourse.julialang.org/t/method-madness/67361/1 "2021-08-30T14:54:04Z")
I’m following a recent tutorial, but one method has already disappeared from the package they are using. Apparently it migrated to another package, which seems to happen often. I can’t seem to find it. Can anyone tell me what package convolve is in?
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### Author:  [@CameronBieganek](https://discourse.julialang.org/u/CameronBieganek)
#### Post date: [August 30, 2021, 2:55pm UTC](https://discourse.julialang.org/t/method-madness/67361/2 "2021-08-30T14:55:30Z")
What’s the package that `convolve` disappeared from?
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### Author:  [@CameronBieganek](https://discourse.julialang.org/u/CameronBieganek)
#### Post date: [August 30, 2021, 3:03pm UTC](https://discourse.julialang.org/t/method-madness/67361/3 "2021-08-30T15:03:24Z")
If nothing else, you can do a search on Julia Hub:
[https://juliahub.com/ui/Search?q=convolve&type=code&w=true](https://juliahub.com/ui/Search?q=convolve&type=code&w=true)
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### Author:  [@cybervigilante](https://discourse.julialang.org/u/cybervigilante)
#### Post date: [August 30, 2021, 3:45pm UTC](https://discourse.julialang.org/t/method-madness/67361/4 "2021-08-30T15:45:32Z")
Thanks. A useful resource, although it looks like about a hundred packages have convolve so I’ll have to narrow it down 😃
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### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [August 30, 2021, 3:55pm UTC](https://discourse.julialang.org/t/method-madness/67361/5 "2021-08-30T15:55:12Z")
Madness might be not to post a link to the tutorial or a [MWE](https://discourse.julialang.org/t/please-read-make-it-easier-to-help-you/14757).
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### Author:  [@CameronBieganek](https://discourse.julialang.org/u/CameronBieganek)
#### Post date: [August 31, 2021, 12:14pm UTC](https://discourse.julialang.org/t/method-madness/67361/6 "2021-08-31T12:14:18Z")
Actually, it’s only about 10-12 packages. The Julia Hub search shows each point in the source code for those packages where `convolve` appears.
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### Author:  [@oxinabox](https://discourse.julialang.org/u/oxinabox)
#### Post date: [September 2, 2021, 8:54am UTC](https://discourse.julialang.org/t/method-madness/67361/7 "2021-09-02T08:54:40Z")
I would recommend contacting the author and asking them to go back and add versions to the packages they are using.
It’s a mistake on their part to not include this info.