# Exploring UIKit Internals with Hopper Disassembler · Nest Navigation Controllers with Public API | raywenderlich.com

**URL:** <https://forums.kodeco.com/t/exploring-uikit-internals-with-hopper-disassembler-nest-navigation-controllers-with-public-api-raywenderlich-com/87141>\
**Category:** 🎓 Courses & Articles\
**Created:** [November 5, 2019, 2:11pm UTC](https://forums.kodeco.com/t/exploring-uikit-internals-with-hopper-disassembler-nest-navigation-controllers-with-public-api-raywenderlich-com/87141 "2019-11-05T14:11:51Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![scottb](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/scottb/32/172_2.png) [@scottb](https://forums.kodeco.com/u/scottb)\
**Post date:** [November 5, 2019, 2:11pm UTC](https://forums.kodeco.com/t/exploring-uikit-internals-with-hopper-disassembler-nest-navigation-controllers-with-public-api-raywenderlich-com/87141/1 "2019-11-05T14:11:52Z")

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This is a companion discussion topic for the original entry at [https://www.raywenderlich.com/5443810-exploring-uikit-internals-with-hopper-disassembler/lessons/1](https://www.raywenderlich.com/5443810-exploring-uikit-internals-with-hopper-disassembler/lessons/1)

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**Author:** ![byaruhaf](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/byaruhaf/32/111735_2.png) [@byaruhaf](https://forums.kodeco.com/u/byaruhaf)\
**Post date:** [November 6, 2019, 5:42am UTC](https://forums.kodeco.com/t/exploring-uikit-internals-with-hopper-disassembler-nest-navigation-controllers-with-public-api-raywenderlich-com/87141/2 "2019-11-06T05:42:39Z")

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The Download Materials, are missing asset’s

> warning: Missing Content: The file “90d94771da8c6bd3da7f9e8173f712cf.jpeg” for the image set “Brian” does not exist.

> The file “824a6fbb8cbbae317c42ec5a94649f9a.jpeg” for the image set “Ray” does not exist.

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**Author:** ![zeydeniii](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/zeydeniii/32/97453_2.png) [@zeydeniii](https://forums.kodeco.com/u/zeydeniii)\
**Post date:** [December 2, 2019, 5:58pm UTC](https://forums.kodeco.com/t/exploring-uikit-internals-with-hopper-disassembler-nest-navigation-controllers-with-public-api-raywenderlich-com/87141/3 "2019-12-02T17:58:34Z")

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Hello.  
Could you explain why you wrote `setNavigationBarHidden(_:)` twice at the beginning please?

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**Author:** ![shogunkaramazov](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/shogunkaramazov/32/108826_2.png) [@shogunkaramazov](https://forums.kodeco.com/u/shogunkaramazov)\
**Post date:** [December 2, 2019, 6:23pm UTC](https://forums.kodeco.com/t/exploring-uikit-internals-with-hopper-disassembler-nest-navigation-controllers-with-public-api-raywenderlich-com/87141/4 "2019-12-02T18:23:29Z")

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@scottb Can you please help with this when you get a chance? Thank you - much appreciated! :]

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**Author:** ![scottb1](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/scottb1/32/107228_2.png) [@scottb1](https://forums.kodeco.com/u/scottb1)\
**Post date:** [December 3, 2019, 12:06am UTC](https://forums.kodeco.com/t/exploring-uikit-internals-with-hopper-disassembler-nest-navigation-controllers-with-public-api-raywenderlich-com/87141/5 "2019-12-03T00:06:50Z")

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@zeydeniii Only because that made it a little easier to both demonstrate how the app should work and also making it a little simpler to make changes in the video. They have different values (true/false) and I’m removing the second call later on in the video. Hope that helps!

@byaruhaf Thanks for pointing that out, I’ll get the materials updated.