Re: Java learning resources for Clojurists?

2017-08-15 Thread Paul Gowder 
Oh, thank you, that looks like a great resource!

On Tuesday, August 15, 2017 at 9:24:45 PM UTC-5, Daniel Compton wrote:
>
> Eric Normand has a course "JVM Fundamentals for Clojure" which might be 
> useful? https://purelyfunctional.tv/courses/jvm-clojure/
>
> On Wed, Aug 16, 2017 at 2:20 PM Paul Gowder  > wrote:
>
>> Hi there, 
>>
>> Can anyone recommend decent resources for learning Java for experienced 
>> Clojurists who don't do enough interop?  
>>
>> After writing Clojure for about a year and a half, I find that the most 
>> continuous barrier I encounter is in understanding how to drop down to the 
>> JVM.  And it's even a barrier in using some core CLJ libraries.  
>>
>> Here's an illustration of the problem I often have.  I was writing a web 
>> application using Reagent/Immutant, and I wanted to pass data from frontend 
>> to backend over a websocket in transit format. But the only example in the 
>> github readme for Transit-CLJ involves dealing with data as a Java 
>> bytestream.  And it was just too daunting to try to figure out what flavor 
>> of JVM string the stuff being received over the websocket was under the 
>> hood, how to cast it into a bytearrayinputstream or whatever else can fit 
>> into a transit "writer," etc. Or even just like where to start translating 
>> from "here, I have a Clojure string" to "oh god, now it has to turn into 
>> some kind of low-level object that isn't a string and isn't a file but is 
>> something in between and maybe it has to be a stream and maybe it doesn't 
>>
>> Yet almost all "how to learn java" materials I can turn up seem to be 
>> directed at total beginner programmers, and start with stuff like "here's 
>> what a for loop is" rather than practical stuff like "here's how to sort 
>> out the different kinds of array-whatsits and byte-whatsats" or "here's how 
>> the entry point of a java library works" or whatnot. 
>>
>> I'm hoping there's something out there (that goes a bit deeper than the 
>> wonderful-but-not-quite-what-i-need interop chapter in Brave and True) that 
>> someone can recommend.
>>
>> thanks!
>>
>> -Paul
>>
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>

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Re: Java learning resources for Clojurists?

2017-08-15 Thread Daniel Compton 
Eric Normand has a course "JVM Fundamentals for Clojure" which might be
useful? https://purelyfunctional.tv/courses/jvm-clojure/

On Wed, Aug 16, 2017 at 2:20 PM Paul Gowder  wrote:

> Hi there,
>
> Can anyone recommend decent resources for learning Java for experienced
> Clojurists who don't do enough interop?
>
> After writing Clojure for about a year and a half, I find that the most
> continuous barrier I encounter is in understanding how to drop down to the
> JVM.  And it's even a barrier in using some core CLJ libraries.
>
> Here's an illustration of the problem I often have.  I was writing a web
> application using Reagent/Immutant, and I wanted to pass data from frontend
> to backend over a websocket in transit format. But the only example in the
> github readme for Transit-CLJ involves dealing with data as a Java
> bytestream.  And it was just too daunting to try to figure out what flavor
> of JVM string the stuff being received over the websocket was under the
> hood, how to cast it into a bytearrayinputstream or whatever else can fit
> into a transit "writer," etc. Or even just like where to start translating
> from "here, I have a Clojure string" to "oh god, now it has to turn into
> some kind of low-level object that isn't a string and isn't a file but is
> something in between and maybe it has to be a stream and maybe it doesn't
>
> Yet almost all "how to learn java" materials I can turn up seem to be
> directed at total beginner programmers, and start with stuff like "here's
> what a for loop is" rather than practical stuff like "here's how to sort
> out the different kinds of array-whatsits and byte-whatsats" or "here's how
> the entry point of a java library works" or whatnot.
>
> I'm hoping there's something out there (that goes a bit deeper than the
> wonderful-but-not-quite-what-i-need interop chapter in Brave and True) that
> someone can recommend.
>
> thanks!
>
> -Paul
>
> --
> You received this message because you are subscribed to the Google
> Groups "Clojure" group.
> To post to this group, send email to clojure@googlegroups.com
> Note that posts from new members are moderated - please be patient with
> your first post.
> To unsubscribe from this group, send email to
> clojure+unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/clojure?hl=en
> ---
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> For more options, visit https://groups.google.com/d/optout.
>

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