# \[Chapter 6\] Second Playground example

**URL:** <https://forums.kodeco.com/t/chapter-6-second-playground-example/116057>\
**Category:** Concurrency by Tutorials\
**Created:** [July 28, 2020, 9:52am UTC](https://forums.kodeco.com/t/chapter-6-second-playground-example/116057 "2020-07-28T09:52:23Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![ygornascimento](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/ygornascimento/32/102075_2.png) [@ygornascimento](https://forums.kodeco.com/u/ygornascimento)\
**Post date:** [July 28, 2020, 9:52am UTC](https://forums.kodeco.com/t/chapter-6-second-playground-example/116057/1 "2020-07-28T09:52:23Z")

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Hello guys, nice to be here!

The second playground example, that ask to add a “duration” function does not work. I really believe that is because the “duration” closure/func is not declared anywhere. How do I fix this? Thanks in advance.

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**Author:** ![gargoyle](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/gargoyle/32/107285_2.png) [@gargoyle](https://forums.kodeco.com/u/gargoyle)\
**Post date:** [July 28, 2020, 4:17pm UTC](https://forums.kodeco.com/t/chapter-6-second-playground-example/116057/2 "2020-07-28T16:17:09Z")

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Hi @ygornascimento. There aren’t playground examples in Chapter 6. Could you clarify where you mean, and what the playground you’re looking at was called to help me find it better?

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**Author:** ![ygornascimento](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/ygornascimento/32/102075_2.png) [@ygornascimento](https://forums.kodeco.com/u/ygornascimento)\
**Post date:** [July 30, 2020, 11:56am UTC](https://forums.kodeco.com/t/chapter-6-second-playground-example/116057/3 "2020-07-30T11:56:16Z")

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Sure thing.

![Evidence](https://files.chunter.kodeco.com/original/3X/b/c/bc98654a3ce9388907224f402083e89816c0665a.jpeg)

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**Author:** ![ygornascimento](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/ygornascimento/32/102075_2.png) [@ygornascimento](https://forums.kodeco.com/u/ygornascimento)\
**Post date:** [July 30, 2020, 11:58am UTC](https://forums.kodeco.com/t/chapter-6-second-playground-example/116057/4 "2020-07-30T11:58:22Z")

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By the way, congratulations for the very well written book. Your didactics are superb, I learned a lot!

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**Author:** ![gargoyle](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/gargoyle/32/107285_2.png) [@gargoyle](https://forums.kodeco.com/u/gargoyle)\
**Post date:** [August 1, 2020, 7:39pm UTC](https://forums.kodeco.com/t/chapter-6-second-playground-example/116057/5 "2020-08-01T19:39:14Z")

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Thanks! Glad to hear you’re finding it useful. I apologize for the confusion. I was looking at my Push Notifications book instead of this one when I said no playgrounds. With the playground open, if you press Command-1 you’ll be shown the navigator and you should see the source for the duration method there.

I just downloaded a copy of the materials from Ray’s site to make sure everything worked. Can you clarify what the specific issue is you’re seeing?

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**Author:** ![pulkitap](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/pulkitap/32/81494_2.png) [@pulkitap](https://forums.kodeco.com/u/pulkitap)\
**Post date:** [September 8, 2020, 1:10pm UTC](https://forums.kodeco.com/t/chapter-6-second-playground-example/116057/6 "2020-09-08T13:10:50Z")

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Hi @gargoyle,

In my case,

> duration

function is taking 4 seconds. Can you please guide me for the reason behind it?

 ![Screenshot 2020-09-08 at 6.36.57 PM](https://files.chunter.kodeco.com/original/3X/3/1/3146db466b73a7df4646a2ea46decd02323539bb.jpeg)

Thanks

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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:** [April 9, 2021, 8:20pm UTC](https://forums.kodeco.com/t/chapter-6-second-playground-example/116057/7 "2021-04-09T20:20:39Z")

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@pulkitap Do you still have issues with this?