Build "Did you mean?"

[Pankaj Doharey]

I am a former rubyist, and in ruby there is this feature called "Did you mean?"

For instance :

irb(main):001:0> s = 'helloworld'.spli(//)
Traceback (most recent call last):
2: from /Users/xxxx/.rbenv/versions/2.6.0-dev/bin/irb:11:in `<main>'
1: from (irb):1
NoMethodError (undefined method `spli' for "helloworld":String)
Did you mean? split
irb(main):002:0> s = 'helloworld'.split(//)
=> ["h", "e", "l", "l", "o", "w", "o", "r", "l", "d"]


Something similar in clojure would be :

user=> (str/split "helloworld" #"")
CompilerException java.lang.RuntimeException: No such var: clojure.string/spli, c ...
Did you mean? (str/split ...

Usually the Did you mean would be in some error color, I think this could be a nice feature for beginners to have method suggestions. and aesthetically just nice.

Do you think it could be a worthy addition to the clojure ecosystem ? It isnt a very difficult suggestion to implement only one file would be touched Compiler.java and tests files. Doesnt require many changes if we consider we moving with this.

[Andy Fingerhut]

I cannot speak for the Clojure core developers, but I would guess that they might point out that the Clojure run time most likely provides all of the information needed to generate such a suggestion (e.g. see the definition of the "apropos" function), and to hook into examining the causes of exceptions in a REPL.  For example, see the talk "REPL-Driven Development" by Stuart Halloway.  A transcript and link to video recording is here: https://github.com/matthiasn/talk-transcripts/blob/master/Halloway_Stuart/REPLDrivenDevelopment.md

Andy

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[Alex Miller]

Yeah, I don't think this needs to be in core. I suspect this is probably mostly covered by existing libs already, like clojure-complete (https://github.com/ninjudd/clojure-complete). 

On Wed, Sep 12, 2018 at 10:21 AM, Andy Fingerhut <andy.fi...@gmail.com> wrote:

I cannot speak for the Clojure core developers, but I would guess that they might point out that the Clojure run time most likely provides all of the information needed to generate such a suggestion (e.g. see the definition of the "apropos" function), and to hook into examining the causes of exceptions in a REPL.  For example, see the talk "REPL-Driven Development" by Stuart Halloway.  A transcript and link to video recording is here: https://github.com/matthiasn/talk-transcripts/blob/master/Halloway_Stuart/REPLDrivenDevelopment.md

Andy

On Wed, Sep 12, 2018 at 1:42 AM Pankaj Doharey <pankaj...@gmail.com> wrote:

I am a former rubyist, and in ruby there is this feature called "Did you mean?"

For instance :

irb(main):001:0> s = 'helloworld'.spli(//)
Traceback (most recent call last):
        2: from /Users/xxxx/.rbenv/versions/2.6.0-dev/bin/irb:11:in `<main>'
        1: from (irb):1
NoMethodError (undefined method `spli' for "helloworld":String)
Did you mean?  split
irb(main):002:0> s = 'helloworld'.split(//)
=> ["h", "e", "l", "l", "o", "w", "o", "r", "l", "d"]


Something similar in clojure would be :

user=> (str/split "helloworld" #"")
CompilerException java.lang.RuntimeException: No such var: clojure.string/spli, c ...
Did you mean? (str/split ...

Usually the Did you mean would be in some error color, I think this could be a nice feature for beginners to have method suggestions. and aesthetically just nice.

Do you think it could be a worthy addition to the clojure ecosystem ? It isnt a very difficult suggestion to implement only one file would be touched Compiler.java and tests files. Doesnt require many changes if we consider we moving with this.

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[Pankaj Doharey]

i wasn’t aware of this. thanks!

On Wed, 12 Sep 2018 at 8:59 PM, Alex Miller <al...@puredanger.com> wrote:

Yeah, I don't think this needs to be in core. I suspect this is probably mostly covered by existing libs already, like clojure-complete (https://github.com/ninjudd/clojure-complete). 

On Wed, Sep 12, 2018 at 10:21 AM, Andy Fingerhut <andy.fi...@gmail.com> wrote:

I cannot speak for the Clojure core developers, but I would guess that they might point out that the Clojure run time most likely provides all of the information needed to generate such a suggestion (e.g. see the definition of the "apropos" function), and to hook into examining the causes of exceptions in a REPL.  For example, see the talk "REPL-Driven Development" by Stuart Halloway.  A transcript and link to video recording is here: https://github.com/matthiasn/talk-transcripts/blob/master/Halloway_Stuart/REPLDrivenDevelopment.md

Andy

On Wed, Sep 12, 2018 at 1:42 AM Pankaj Doharey <pankaj...@gmail.com> wrote:

I am a former rubyist, and in ruby there is this feature called "Did you mean?"

For instance :

irb(main):001:0> s = 'helloworld'.spli(//)
Traceback (most recent call last):
        2: from /Users/xxxx/.rbenv/versions/2.6.0-dev/bin/irb:11:in `<main>'
        1: from (irb):1
NoMethodError (undefined method `spli' for "helloworld":String)
Did you mean?  split
irb(main):002:0> s = 'helloworld'.split(//)
=> ["h", "e", "l", "l", "o", "w", "o", "r", "l", "d"]


Something similar in clojure would be :

user=> (str/split "helloworld" #"")
CompilerException java.lang.RuntimeException: No such var: clojure.string/spli, c ...
Did you mean? (str/split ...

Usually the Did you mean would be in some error color, I think this could be a nice feature for beginners to have method suggestions. and aesthetically just nice.

Do you think it could be a worthy addition to the clojure ecosystem ? It isnt a very difficult suggestion to implement only one file would be touched Compiler.java and tests files. Doesnt require many changes if we consider we moving with this.

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