Confused by a bit of syntax-- Clojure(script) or Hiccup?

Discussion:

Randy J. Ray

2018-11-20 19:27:19 UTC

I've been trying to read through and understand the examples in the reagent
repo, and I've come across something that I just don't quite get:

:>

I've looked over all the docs for Clojure, Clojurescript and Hiccup, but
find no reference to this. It appears as the first element in vectors in a
context that leads me to think it's part of Hiccup. But I'm expecting
keywords like ":div", ":p", etc. The ":>" sequence, I guess I'm just not
quite getting it?

Randy
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Justin Smith

2018-11-20 20:43:59 UTC

Permalink

:> is a valid Clojure keyword, but has no special meaning on its own.

In Reagent's version of the Hiccup DSL, :> introduces a Reagent component
defined from a React component
https://github.com/reagent-project/reagent/blob/master/doc/InteropWithReact.md#creating-reagent-components-from-react-components

Post by Randy J. Ray
I've been trying to read through and understand the examples in the
:>
I've looked over all the docs for Clojure, Clojurescript and Hiccup, but
find no reference to this. It appears as the first element in vectors in a
context that leads me to think it's part of Hiccup. But I'm expecting
keywords like ":div", ":p", etc. The ":>" sequence, I guess I'm just not
quite getting it?
Randy
--
Silicon Valley Scale Modelers: http://www.svsm.org
San Jose, CA
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Justin Smith

2018-11-20 20:48:56 UTC

Permalink

I'll add that I knew this, but it took me longer than I expected to
actually find the documentation to point to. I don't know how a new user of
the library would be expected to discover what that symbol means.

Post by Justin Smith
:> is a valid Clojure keyword, but has no special meaning on its own.
In Reagent's version of the Hiccup DSL, :> introduces a Reagent component
defined from a React component
https://github.com/reagent-project/reagent/blob/master/doc/InteropWithReact.md#creating-reagent-components-from-react-components

Post by Randy J. Ray
I've been trying to read through and understand the examples in the
:>
I've looked over all the docs for Clojure, Clojurescript and Hiccup, but
find no reference to this. It appears as the first element in vectors in a
context that leads me to think it's part of Hiccup. But I'm expecting
keywords like ":div", ":p", etc. The ":>" sequence, I guess I'm just not
quite getting it?
Randy
--
Silicon Valley Scale Modelers: http://www.svsm.org
San Jose, CA
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Randy J. Ray

2018-11-20 21:08:11 UTC

Permalink

Thanks for the pointer! My mistake was looking for this in the source-- had
I ack'd over the doc/ directory I would have found it!

Randy

Post by Justin Smith
I'll add that I knew this, but it took me longer than I expected to
actually find the documentation to point to. I don't know how a new user of
the library would be expected to discover what that symbol means.

Post by Randy J. Ray
I've been trying to read through and understand the examples in the
:>
I've looked over all the docs for Clojure, Clojurescript and Hiccup, but
find no reference to this. It appears as the first element in vectors in a
context that leads me to think it's part of Hiccup. But I'm expecting
keywords like ":div", ":p", etc. The ":>" sequence, I guess I'm just not
quite getting it?
Randy
--
Silicon Valley Scale Modelers: http://www.svsm.org
San Jose, CA
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Randy J. Ray

2018-11-21 17:52:02 UTC

Permalink

I've also discovered that ":<>" isn't even in the docs/ directory at all.
Fortunately, the couple of places it is used in the examples document it as
shorthand for React.Fragment.

Randy

Post by Randy J. Ray
I've been trying to read through and understand the examples in the
:>
I've looked over all the docs for Clojure, Clojurescript and Hiccup, but
find no reference to this. It appears as the first element in vectors in a
context that leads me to think it's part of Hiccup. But I'm expecting
keywords like ":div", ":p", etc. The ":>" sequence, I guess I'm just not
quite getting it?
Randy
--
Silicon Valley Scale Modelers: http://www.svsm.org
San Jose, CA
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