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@@ -0,0 +1,756 @@
+0:00:00.799,0:00:05.520
+hello everyone and welcome to this short
+
+0:00:04.000,0:00:08.160
+lightning talk
+
+0:00:05.520,0:00:09.519
+traverse complex json structures with
+
+0:00:08.160,0:00:13.040
+live feedback
+
+0:00:09.519,0:00:18.000
+this is a pre-recorded talk and part of
+
+0:00:13.040,0:00:19.920
+the e-max conf 2020 schedule
+
+0:00:18.000,0:00:21.840
+this is what we're going to do i'll make
+
+0:00:19.920,0:00:22.320
+a quick introduction to the topic at
+
+0:00:21.840,0:00:23.920
+hand
+
+0:00:22.320,0:00:25.760
+i'll give you a demonstration of some
+
+0:00:23.920,0:00:29.199
+tools and then we'll leave you
+
+0:00:25.760,0:00:31.920
+with the links to set tools
+
+0:00:29.199,0:00:32.399
+before that just a little bit about me i
+
+0:00:31.920,0:00:36.079
+am the
+
+0:00:32.399,0:00:39.520
+ceo and co-founder of a company
+
+0:00:36.079,0:00:40.399
+based in the swiss mountains called 200
+
+0:00:39.520,0:00:43.600
+okay
+
+0:00:40.399,0:00:46.160
+we are a product incubator and
+
+0:00:43.600,0:00:47.200
+service consultancy but we like to spend
+
+0:00:46.160,0:00:50.719
+most or at least
+
+0:00:47.200,0:00:52.719
+as much time as we can building free
+
+0:00:50.719,0:00:55.520
+software
+
+0:00:52.719,0:00:56.879
+i'm also an ordained zen monk and abbott
+
+0:00:55.520,0:01:00.160
+of the lambda zen temple
+
+0:00:56.879,0:01:01.359
+you can reach me anytime on questions
+
+0:01:00.160,0:01:05.860
+regarding emacs
+
+0:01:01.359,0:01:07.200
+for example at ala at 200ok.ch
+
+0:01:05.860,0:01:09.600
+[Music]
+
+0:01:07.200,0:01:11.760
+but back to the topic at hand the
+
+0:01:09.600,0:01:13.680
+proposition is as following
+
+0:01:11.760,0:01:15.520
+most work on the computer is based on
+
+0:01:13.680,0:01:16.479
+either text processing or text
+
+0:01:15.520,0:01:19.920
+consumption
+
+0:01:16.479,0:01:20.880
+and very often the text which you need
+
+0:01:19.920,0:01:23.520
+to process
+
+0:01:20.880,0:01:24.560
+is in a structured format for example in
+
+0:01:23.520,0:01:26.640
+json
+
+0:01:24.560,0:01:28.560
+that might even be if your job is not
+
+0:01:26.640,0:01:30.400
+programming per se
+
+0:01:28.560,0:01:33.119
+and reading through such a bigger chunk
+
+0:01:30.400,0:01:36.479
+of json can be non-trivial however
+
+0:01:33.119,0:01:39.119
+while just reading and understanding it
+
+0:01:36.479,0:01:40.320
+will be essential to getting your job
+
+0:01:39.119,0:01:43.680
+done
+
+0:01:40.320,0:01:47.200
+so let's quickly check out an example
+
+0:01:43.680,0:01:50.560
+json file this is from the github api
+
+0:01:47.200,0:01:53.119
+where which is a request sorry the
+
+0:01:50.560,0:01:55.280
+response to a request for a specific
+
+0:01:53.119,0:01:58.560
+issue on the github api so let's
+
+0:01:55.280,0:01:58.560
+quickly check that one out
+
+0:01:58.799,0:02:03.280
+okay so here it is open and we can
+
+0:02:01.280,0:02:05.439
+already see that there is lots of stuff
+
+0:02:03.280,0:02:08.319
+going on here
+
+0:02:05.439,0:02:10.319
+it's uh 200 lines it's not going to be
+
+0:02:08.319,0:02:12.160
+very easy just just to find out what are
+
+0:02:10.319,0:02:13.920
+the top level things in here what are
+
+0:02:12.160,0:02:14.560
+the top level attributes of course i can
+
+0:02:13.920,0:02:16.480
+do this
+
+0:02:14.560,0:02:17.840
+and maybe it would by hand but that
+
+0:02:16.480,0:02:20.560
+doesn't scale
+
+0:02:17.840,0:02:22.560
+i can use cool emacs facilities like the
+
+0:02:20.560,0:02:24.720
+height show mode and try to
+
+0:02:22.560,0:02:27.200
+fold all the things that are top level
+
+0:02:24.720,0:02:29.760
+but that also doesn't really scale
+
+0:02:27.200,0:02:32.000
+there must be a better way and of course
+
+0:02:29.760,0:02:34.959
+there is there is prior art
+
+0:02:32.000,0:02:36.080
+there is a tool called jq i'm going to
+
+0:02:34.959,0:02:39.120
+quote the usp
+
+0:02:36.080,0:02:42.959
+from their website jq is like
+
+0:02:39.120,0:02:44.720
+sed said for json data you can use it to
+
+0:02:42.959,0:02:46.720
+slice and filter and map
+
+0:02:44.720,0:02:47.840
+and transform structured data with the
+
+0:02:46.720,0:02:51.519
+same ease that
+
+0:02:47.840,0:02:53.920
+z awk grep and friends let you play with
+
+0:02:51.519,0:02:53.920
+text
+
+0:02:54.000,0:02:57.519
+let me give you a quick demonstration of
+
+0:02:56.160,0:02:59.680
+it by the way
+
+0:02:57.519,0:03:01.920
+it's written in portable c it has zero
+
+0:02:59.680,0:03:04.959
+runtime dependency so it's very easy
+
+0:03:01.920,0:03:09.040
+to get started with it and use it on
+
+0:03:04.959,0:03:12.800
+pretty much any unix-based
+
+0:03:09.040,0:03:16.159
+computer sorry no linux based computer
+
+0:03:12.800,0:03:19.599
+apologies okay so let's explore a
+
+0:03:16.159,0:03:21.120
+json file with it it's a command line
+
+0:03:19.599,0:03:24.640
+tool and it has a very
+
+0:03:21.120,0:03:26.799
+simple command line syntax so you
+
+0:03:24.640,0:03:27.840
+call the binary and then you give it a
+
+0:03:26.799,0:03:31.680
+query
+
+0:03:27.840,0:03:33.840
+and a file and then we'll return
+
+0:03:31.680,0:03:35.440
+its answer so for example if i want the
+
+0:03:33.840,0:03:38.319
+top level keys
+
+0:03:35.440,0:03:39.840
+i will just say jq keys the file and it
+
+0:03:38.319,0:03:42.319
+will return the keys
+
+0:03:39.840,0:03:43.519
+simple as that so let's check this out
+
+0:03:42.319,0:03:46.879
+in a real
+
+0:03:43.519,0:03:50.080
+shell here i am in eshel
+
+0:03:46.879,0:03:53.200
+let's run jq keys on the github
+
+0:03:50.080,0:03:56.959
+issue comment and we can see
+
+0:03:53.200,0:04:00.000
+that we have actually received a list
+
+0:03:56.959,0:04:02.000
+back here with the top level
+
+0:04:00.000,0:04:04.319
+things okay so this issue it looks very
+
+0:04:02.000,0:04:06.239
+very interesting so let's uh ask it to
+
+0:04:04.319,0:04:10.080
+give me more information on this
+
+0:04:06.239,0:04:11.360
+issue then it's hairy again that's a lot
+
+0:04:10.080,0:04:14.319
+of stuff
+
+0:04:11.360,0:04:17.759
+i mean lucky for for us we are in emacs
+
+0:04:14.319,0:04:21.040
+here so we can use nice shortcuts we can
+
+0:04:17.759,0:04:22.000
+copy this we go can go in here just
+
+0:04:21.040,0:04:24.400
+select that
+
+0:04:22.000,0:04:25.600
+get that out or something like this but
+
+0:04:24.400,0:04:28.320
+still
+
+0:04:25.600,0:04:29.600
+this is not really it's not really the
+
+0:04:28.320,0:04:34.080
+best way
+
+0:04:29.600,0:04:36.639
+to do that right it gets kind of tedious
+
+0:04:34.080,0:04:37.680
+at this point the output can be
+
+0:04:36.639,0:04:39.360
+humongous
+
+0:04:37.680,0:04:42.479
+the shell is not really the best place
+
+0:04:39.360,0:04:43.600
+to read through such big output i mean e
+
+0:04:42.479,0:04:45.440
+shell is
+
+0:04:43.600,0:04:47.440
+probably one of the better shells for
+
+0:04:45.440,0:04:48.560
+this because it's just a regular emacs
+
+0:04:47.440,0:04:51.199
+buffer but still
+
+0:04:48.560,0:04:52.720
+it's not really the best tool and i need
+
+0:04:51.199,0:04:55.280
+to repeat the command
+
+0:04:52.720,0:04:56.000
+all the time until i finally build the
+
+0:04:55.280,0:04:59.120
+right query
+
+0:04:56.000,0:05:02.080
+and all the time i use i lose my
+
+0:04:59.120,0:05:02.800
+focus i lose what i'm currently looking
+
+0:05:02.080,0:05:06.080
+at
+
+0:05:02.800,0:05:08.160
+i'm seeing the new result it would be so
+
+0:05:06.080,0:05:10.080
+much nicer to have live feedback
+
+0:05:08.160,0:05:11.600
+and when working with emacs we're quite
+
+0:05:10.080,0:05:12.320
+used to that so there should be an
+
+0:05:11.600,0:05:15.120
+option
+
+0:05:12.320,0:05:17.759
+and of course there is it's emacs right
+
+0:05:15.120,0:05:20.880
+so you can do anything
+
+0:05:17.759,0:05:22.960
+there is various good tools for
+
+0:05:20.880,0:05:26.000
+completion in emacs
+
+0:05:22.960,0:05:29.039
+i used ivy for this
+
+0:05:26.000,0:05:31.840
+i'm going to code the usp for ivy
+
+0:05:29.039,0:05:32.639
+iv is a generic completion mechanism for
+
+0:05:31.840,0:05:34.639
+emacs
+
+0:05:32.639,0:05:35.919
+while it operates similarly to other
+
+0:05:34.639,0:05:38.960
+completion schemes
+
+0:05:35.919,0:05:40.400
+such as icomplete mode iv aims to be
+
+0:05:38.960,0:05:43.120
+more efficient smaller
+
+0:05:40.400,0:05:45.199
+simpler and smoother to use yet highly
+
+0:05:43.120,0:05:47.840
+customizable
+
+0:05:45.199,0:05:49.440
+and that's true one of the cool things
+
+0:05:47.840,0:05:52.479
+of iv
+
+0:05:49.440,0:05:54.320
+compared to other completion mechanisms
+
+0:05:52.479,0:05:58.160
+in emacs
+
+0:05:54.320,0:06:01.600
+is that it can be used on dynamic
+
+0:05:58.160,0:06:03.520
+data so usually completion works on a
+
+0:06:01.600,0:06:05.360
+static input for example you're in a
+
+0:06:03.520,0:06:08.800
+buffer a text buffer
+
+0:06:05.360,0:06:09.600
+and you use i search maybe with idle
+
+0:06:08.800,0:06:12.400
+mode
+
+0:06:09.600,0:06:13.360
+and you find your results that's all
+
+0:06:12.400,0:06:16.960
+nice
+
+0:06:13.360,0:06:19.840
+however if i
+
+0:06:16.960,0:06:20.720
+want to search on dynamic data that
+
+0:06:19.840,0:06:23.759
+doesn't work
+
+0:06:20.720,0:06:27.039
+so whenever i type in my query
+
+0:06:23.759,0:06:28.000
+for jq i actually need to call the jq
+
+0:06:27.039,0:06:30.160
+binary
+
+0:06:28.000,0:06:32.840
+and it will give a different result set
+
+0:06:30.160,0:06:36.319
+back so it's a really
+
+0:06:32.840,0:06:38.240
+dynamic mechanism that we need here it's
+
+0:06:36.319,0:06:41.440
+much more like a search engine
+
+0:06:38.240,0:06:42.560
+and ivy luckily has something built in
+
+0:06:41.440,0:06:46.000
+and it's called
+
+0:06:42.560,0:06:48.160
+console so i used council and jq
+
+0:06:46.000,0:06:49.199
+and combined them and build a new
+
+0:06:48.160,0:06:52.960
+package
+
+0:06:49.199,0:06:56.000
+with which we can use emacs and jq
+
+0:06:52.960,0:06:58.800
+to have live feedback
+
+0:06:56.000,0:06:59.840
+it's very easy to use so you just call
+
+0:06:58.800,0:07:02.800
+console.jq
+
+0:06:59.840,0:07:04.319
+on a buffer containing json for example
+
+0:07:02.800,0:07:07.280
+the one we have here
+
+0:07:04.319,0:07:08.319
+let's call console.jq on it and we
+
+0:07:07.280,0:07:11.280
+already
+
+0:07:08.319,0:07:13.039
+get a default query the dot query which
+
+0:07:11.280,0:07:16.080
+just gives us
+
+0:07:13.039,0:07:17.280
+the same file but now we can change it
+
+0:07:16.080,0:07:19.039
+and for example
+
+0:07:17.280,0:07:21.039
+find all the keys in here and then we
+
+0:07:19.039,0:07:22.800
+see i had this issue this was the one
+
+0:07:21.039,0:07:24.639
+that we were interested in
+
+0:07:22.800,0:07:26.479
+so let's find more information on the
+
+0:07:24.639,0:07:28.800
+issue what
+
+0:07:26.479,0:07:31.680
+keys does it have actually have uh it
+
+0:07:28.800,0:07:34.800
+has assignees that that interests me
+
+0:07:31.680,0:07:37.039
+so let's check out the assignees in here
+
+0:07:34.800,0:07:39.759
+there's two of them but i'm only
+
+0:07:37.039,0:07:42.000
+interested in the first one
+
+0:07:39.759,0:07:43.599
+i'm making stuff up as i go here of
+
+0:07:42.000,0:07:46.000
+course
+
+0:07:43.599,0:07:47.039
+and whenever i hit enter i get a new
+
+0:07:46.000,0:07:50.160
+buffer
+
+0:07:47.039,0:07:53.520
+which just shows me this
+
+0:07:50.160,0:07:55.599
+particular result for the particular
+
+0:07:53.520,0:07:59.199
+query that i entered
+
+0:07:55.599,0:08:03.199
+so let me do that again we are in here
+
+0:07:59.199,0:08:05.840
+we are looking at a
+
+0:08:03.199,0:08:07.520
+json file this can be very very big
+
+0:08:05.840,0:08:09.520
+doesn't also need to be a file just
+
+0:08:07.520,0:08:12.160
+needs to be a buffer
+
+0:08:09.520,0:08:13.599
+you call console.jq on it and you can do
+
+0:08:12.160,0:08:16.479
+any kind of
+
+0:08:13.599,0:08:18.080
+query on it for example let's see if
+
+0:08:16.479,0:08:20.319
+there is a url here
+
+0:08:18.080,0:08:23.759
+yes there's a url let's see if there's a
+
+0:08:20.319,0:08:26.879
+repository here repository
+
+0:08:23.759,0:08:33.360
+no there isn't what was it called issue
+
+0:08:26.879,0:08:33.360
+keys repository url it was called okay
+
+0:08:33.440,0:08:40.240
+so let's see issue pause
+
+0:08:36.640,0:08:42.959
+url and then we see so
+
+0:08:40.240,0:08:44.159
+apparently this issue command is for a
+
+0:08:42.959,0:08:47.839
+repository called
+
+0:08:44.159,0:08:50.320
+organize i wonder what that might be
+
+0:08:47.839,0:08:52.640
+okay so that was a very short
+
+0:08:50.320,0:08:54.800
+introduction to console jq
+
+0:08:52.640,0:08:56.800
+you can see the timer here i only have
+
+0:08:54.800,0:08:57.440
+one minute left to go so i'm going to
+
+0:08:56.800,0:08:59.760
+leave
+
+0:08:57.440,0:09:01.519
+with a very very short introduction to
+
+0:08:59.760,0:09:05.040
+the console gq
+
+0:09:01.519,0:09:07.519
+code it's not even 60 lines
+
+0:09:05.040,0:09:09.600
+of e-lisp so building something like
+
+0:09:07.519,0:09:12.800
+this is very very easy
+
+0:09:09.600,0:09:14.560
+i would encourage you to go and read
+
+0:09:12.800,0:09:16.160
+through the code in your own time
+
+0:09:14.560,0:09:18.320
+if you're interested in building
+
+0:09:16.160,0:09:19.600
+something like this if you're interested
+
+0:09:18.320,0:09:22.720
+in just using
+
+0:09:19.600,0:09:24.320
+jq or you're done
+
+0:09:22.720,0:09:25.839
+these are the links to all the tools
+
+0:09:24.320,0:09:28.800
+console.jq of course
+
+0:09:25.839,0:09:29.519
+is readily available on melpah also
+
+0:09:28.800,0:09:32.959
+developed
+
+0:09:29.519,0:09:36.080
+under the agpl license on github
+
+0:09:32.959,0:09:37.839
+and disorganized thing by the way it's
+
+0:09:36.080,0:09:39.839
+orig mode for mobile and desktop
+
+0:09:37.839,0:09:42.399
+browsers also a great
+
+0:09:39.839,0:09:43.120
+free software tool maybe that interests
+
+0:09:42.399,0:09:46.240
+you
+
+0:09:43.120,0:09:48.800
+thank you for listening have great time
+
+0:09:46.240,0:09:49.360
+10 seconds left i am going to stop this
+
+0:09:48.800,0:09:53.920
+now
+
+0:09:49.360,0:09:53.920
+enjoy emacs conf have a great day
+