jhass

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2019-07-27

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2019-07-09

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2019-07-04

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2019-07-01

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2019-06-26

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2019-06-25

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2019-06-06

[08:30:45] jhass: let's just rename it to #ruby-blockchain-ai or so
[08:30:46] jhass: I'm sure that'll help
[08:32:23] jhass: !memo zenspider maybe
[08:32:26] jhass: no, that's not it
[08:32:49] jhass: okay we never did it for this one
[08:33:02] jhass: there's... MemoServ?
[08:33:47] jhass: yup, /msg MemoServ SEND zenspider heyho
[08:35:21] jhass: gotta upload your election results somehow
[08:36:29] jhass: https://securityaffairs.co/wordpress/62826/hacking/ccc-hacked-pc-wahl-software.html "Hacked" through not secured/bad passwords FTP servers essentially
[08:37:52] jhass: I'm sure a lot of webshop's "deployment pipeline" still is filezilla :D
[08:38:21] jhass: I mean if you click some random shared web hosting, FTP is still the primary access method for sure
[08:42:43] jhass: rsync requires ssh access
[08:42:51] jhass: like real ssh access, sftp ain't enough
[08:43:14] jhass: had to use lftp or something the other day because I didn't want to give real ssh access to something
[08:46:08] jhass: sftp is a fine protocol, only things it has in common with ftp is the letters in the name and the usecase of copying files from one machine to another
[08:46:31] jhass: well or generally modifying a remote file tree
[09:17:11] jhass: shouldn't be hard to build actually, so would surprise me if there isn't somewhere
[09:17:16] jhass: but would be nice if it ships with openssh, yeah
[09:24:10] jhass: sfcp() { echo "put \"$1\" \"$1\"" | sftp "$2" } gets you half-way there already I guess
[09:25:29] jhass: jasmin: I'd try plain authentication. Given startssl... oh well
[09:34:39] jhass: jasmin: I'd try plain authentication. Given starttls you really don't need to protect your credentials
[09:35:16] jhass: isn't login using some challenge/response mechanism? It looks like you gave rails one instance of the challenge response rather than your actual credentials
[11:10:15] jhass: jasmin: with the same credentials as when using plain inside a starttls session using openssl s_client -starttls smtp -connect foo:587
[11:23:11] jhass: jasmin: you got me a bit confused as to what your state is. To clarify: you should use plain as auth method, do set true for enable_starttls_auto and use your plain credentials as you got or set them at OVH, without any encoding or hashing
[11:29:41] jhass: still the same error message?
[11:39:28] jhass: jasmin: I guess you could patch your local copy of the mail gem (bundle show mail) to set Net::SMTP's debug output: https://ruby-doc.org/stdlib-2.6.3/libdoc/net/smtp/rdoc/Net/SMTP.html#method-i-debug_output-3D here https://github.com/mikel/mail/blob/master/lib/mail/network/delivery_methods/smtp.rb#L112
[11:40:08] jhass: that hopefully dumps you the SMTP session somewhere

2019-05-30

[21:48:40] jhass: Rails.application.config.secret_token = ENV["SECRET_KEY_BASE"] should do I think

2019-05-29

[13:23:21] jhass: ZAJDAN: https://stackoverflow.com/a/28201705/2199687
[14:29:29] jhass: basically the fragment shouldn't even be sent to the server, it's interpreted by client side JS in this case
[14:29:38] jhass: not sure you'll have much success with mechanize here
[14:29:58] jhass: might be better to reverse engineer the internal API the client JS app uses
[14:30:14] jhass: Guest39: wasn't for you, but for AndreYuhai :)
[14:33:33] jhass: specifically the post request to https://public.tableau.com/vizql/w/EDB-1/v/AllEntries/bootstrapSession/sessions/467792DBF519404690515526E6987DCF-0:0
[14:33:47] jhass: which returns Base64 encoded JSON
[14:34:09] jhass: ah no Base64 encoded semicolon separated data
[14:34:18] jhass: some fields of which have JSON
[14:38:27] jhass: AndreYuhai: and I'm saying you don't even need to solve this because it will only let you arrive at the more fundamental problem
[14:40:56] jhass: I'm saying trying to scrape the site with mechanize most likely is a lost cause. But given there seems to be a JS client interpreting those fragments, there probably is an internal API that JS client uses which you can try to use to scrape the content
[14:44:41] jhass: ok it looks like you can just ignore the fragment
[14:44:46] jhass: where did you find a link with it?
[14:59:08] jhass: then just shift it to 0-255, .pack("C*") and pass the result a gzip deflater
[14:59:44] jhass: .map {|b| b + 128 }
[15:06:08] jhass: https://stackoverflow.com/a/1366187/2199687
[15:06:27] jhass: well or the stuff from the question
[15:06:33] jhass: whatever works for you
[15:07:05] jhass: er, what deflating is compressing
[15:07:08] jhass: always confusing me
[15:07:14] jhass: so the inflate one below :D
[15:11:26] jhass: it doesn't really matter

2019-05-28

[17:47:40] jhass: with created do you mean written into the database?
[17:51:57] jhass: istrasci: ^
[18:08:10] jhass: no I don't suppose I have
[18:09:10] jhass: sounds like... a lot of work :D
[18:09:36] jhass: did somebody get ruby running in WASM yet? 🤔
[19:44:11] jhass: nah, GCs are :P
[20:13:53] jhass: what glyphs would that use?
[20:15:32] jhass: no, ASCII has 127 characters, many not visible
[20:16:09] jhass: not visible = control characters like backspace, newline, bell and so on
[20:16:28] jhass: what does that mean "store as base256"
[20:17:21] jhass: base256 doesn't exist afaik
[20:17:58] jhass: any string encoding of a number is likely less space efficient than it's binary representation
[20:20:14] jhass: &>> [124453423].pack("L").bytesize
[20:20:40] jhass: &>> 124453423.to_s(36).bytesize
[20:21:10] jhass: as a 32bit integer
[20:21:13] jhass: hence 4 bytes
[20:21:44] jhass: (32/8 = 4)
[20:22:18] jhass: you asked for the most space effecient method
[20:23:05] jhass: what, no why would it
[20:23:21] jhass: &>> `uname -a`
[20:23:44] jhass: ah I blocked it :D
[20:23:56] jhass: be assured it's a 64bit kernel :P
[20:25:40] jhass: still that makes no sense
[20:26:56] jhass: no, the latter is the binary string representation, that is the binary representation as a string
[20:27:14] jhass: of course each of those 1 and 0s takes up 1 byte
[20:27:30] jhass: but what is a string? it's a sequence of codepoints, aka numbers
[20:27:44] jhass: &>> "10011".codepoints
[20:27:55] jhass: &>> "1dotk".codepoints
[20:28:13] jhass: now we want to store a number, why would we encode that number into a sequence of smaller numbers
[20:28:28] jhass: and then store those smaller numbers
[20:28:35] jhass: let's just store the number directly
[20:30:40] jhass: that's what you do if you don't use a string, 123 <- direct number "123" <- string
[20:31:09] jhass: if you need to write it to disk from ruby, use Array#pack
[20:31:51] jhass: &>> [2318312].pack("L")
[20:32:54] jhass: easiest is probbaly just export GEM_HOME="$HOME/.gems" from your shellrc
[20:33:21] jhass: might make your system gems unavailable, not sure
[20:33:32] jhass: so you might also need to readd them to GEM_PATH
[20:33:43] jhass: gem env is great for debugging such
[21:10:12] jhass: read_nonblock
[21:42:39] jhass: what's the advantage towards the mentioned methods?
[21:43:09] jhass: then why use it?
[21:44:07] jhass: I think that's just confusing when a solution was already found
[21:44:28] jhass: without at least mentioning tradeoffs compared to the other solutions
[21:46:15] jhass: the docs here don't paint a great picture on the tradeoffs here to be honest
[21:46:41] jhass: esp. if you don't already have experience around the tradeoffs between buffered and non-buffered IO
[21:47:54] jhass: good thing none of use would ever refer to van gogh's works as a reference for writing ruby code

2019-05-24

[12:58:31] jhass: ytti: got an example?
[12:59:24] jhass: maybe it happens to be valid yaml or something
[13:04:56] jhass: fun, but I fail to spot where it's syntactically invalid?
[13:05:11] jhass: unless the dots are actually in there
[13:06:27] jhass: well, just using the XML is no option?
[13:08:37] jhass: well converting the XML is just the wrong approach in the first place
[13:08:47] jhass: you want your internal models/data classes to serialize to both
[13:13:59] jhass: ytti: just for fun: https://carc.in/#/r/6yy6
[13:17:20] jhass: not sure I'd actually use it, feels kinda hackish (esp compared to just using the XML), but I guess it works :)
[13:17:48] jhass: yeah no idea what the additions thing is about
[15:14:57] jhass: jstrong:no because you simply don't know that point, given you can reopen the class at any point
[15:18:04] jhass: jstrong: common approach is to wrap your "class method DSL" into a block passed to another method. build_validator do; validate_a; validate_b; end; where build_validator does something like: b = Builder.new; b.instance_eval(&block); b.build;
[15:24:09] jhass: no, class level instance variables are more interested. "class methods" actually don't exist in ruby, they're instance methods of the class' #singleton_class
[15:24:17] jhass: eh, more used
[15:24:58] jhass: so any instance variables they reference belong to that singleton class
[15:30:58] jhass: sure why not. I'd add some validations on self.filters and maybe store @filters directly rather than keeping the builder around. Also I assume that's just a simplified example since you don't actually need to know there when "adding filters" is done
[15:32:04] jhass: you can just open the singleton class with class << self;
[15:32:15] jhass: and treat it like you would any other class
[15:37:56] jhass: well attr_accessor is just what it is, in a singleton class too. So it defines Custom.search_class and Custom.search_class=
[15:38:46] jhass: (the inheritance works here because a child class' singleton class inherits its parent class' singleton class)
[15:39:25] jhass: yeah, self.search_class = :test in the class body context
[15:39:39] jhass: else you're just assigning a local variable
[15:59:38] jhass: no idea how you would arrive at string interpolation for that problem statement :D
[16:00:00] jhass: array.each {|e| particular_method(e) }
[16:00:08] jhass: guess I didn't fully get ya ;)
[16:05:05] jhass: iirc instance_eval also yields the receiver, so you could do 'do |e| foo.each {|v| e.argument v }; end
[16:05:19] jhass: if not you could of course capture self before the each into a local
[16:05:49] jhass: or if the call is really that simple you could also do .each(&method(:argument))
[16:06:07] jhass: there's also a new shortcut syntax for that, let me look it up...
[16:10:02] jhass: https://carc.in/#/r/6yyk
[16:10:28] jhass: eh ignore the |b| in the second example
[16:11:12] jhass: with Ruby 2.7 you can also do .each(&.:add)
[16:11:28] jhass: &. is just a shorthand for &method()
[16:11:50] jhass: well kinda
[17:05:42] jhass: the difference between do/end and braces is binding precedence. foo bar do end is foo(bar) do end; foo bar { } is foo(bar do end)
[17:06:50] jhass: yes because the block binds to the closer expression with braces
[17:07:02] jhass: of you do foo(bar) { } it's the same as foo bar do end
[17:07:42] jhass: so foo(bar) { } and foo bar do end are equivalent, so is foo(bar do end) and foo bar { }
[17:08:44] jhass: well, argument list
[17:34:46] jhass: that's what instance_eval does
[20:25:11] jhass: codefriar: how do you define lines?
[20:25:19] jhass: maybe it's not actually lines
[20:27:23] jhass: https://carc.in/#/r/6yzw
[20:27:25] jhass: seems fine
[20:30:21] jhass: codefriar: could you try to provide a self contained example like this that reproduces your issue?
[20:31:36] jhass: ah, ok. .each always returns the receiver so that's expected in a repl session

2019-05-23

[18:15:09] jhass: sound's like you're reinventing Hash#dig
[18:18:04] jhass: where does the string come from?
[18:48:31] jhass: you can, just prepend a *
[18:48:51] jhass: data.dig(*the_array)
[18:49:24] jhass: * is called the splat parameter, it passes each array element as an individual argument to the method
[18:50:05] jhass: works in general for any method call of course
[18:51:09] jhass: view it as the inverse of a varargs argument in a method definition, that is a method parameter that collects all (remaining) positional arguments into an array: def foo(*args)
[19:12:25] jhass: not without context context context
[19:13:31] jhass: call example?
[19:14:01] jhass: looks like terrible code tbh :D
[19:14:52] jhass: my current best guess is Does Not Exist
[19:16:47] jhass: yup, Hash#fetch's block get's called when the given key does not exist in the hash
[19:18:33] jhass: in the argument list it binds any given block argument to the given variable name (as a proc)
[19:18:51] jhass: in the call it does the reverse essentially, it passes the given proc as a block argument
[19:19:29] jhass: >> def foo(&block); block; end; a_proc = foo { 1 + 1 }; a_proc.call
[19:19:59] jhass: eh, whatever
[19:20:35] jhass: second example: def foo; 1 + yield; end; a_proc = proc { 1 }; foo(&a_proc)
[19:23:35] jhass: no if there, but yeah
[19:23:57] jhass: if there's no block if_dne will be nil and &nil will just pass no block
[19:24:35] jhass: simple terms: Product#[] forwards any given block to Hash#fetch
[19:45:20] jhass: I think the id&. is a really big smell here btw
[19:45:34] jhass: why would you ever pass nil there and silently handle it
[21:04:45] jhass: .sort_by {|hash| hash["values"].last }
[21:05:34] jhass: .sort_by returns a new sorted array, sort_by! sorts the existing array in place
[22:07:57] jhass: ruby is entirely pass by reference, there's no pass by value whatsoever, all copying has to happen explicitly via .dup and .clone
[22:09:05] jhass: now BigDecimal#- returns a new instance, x -= y is just a shorthand for x = x - y
[22:11:37] jhass: &>> require "bigdecimal"; x = BigDecimal(10); y = x; x -= 1; x.object_id == y.object_id
[22:13:40] jhass: ah looks like BigDecimal#dup just returns self because it's immutable
[22:14:37] jhass: https://github.com/ruby/ruby/blob/trunk/ext/bigdecimal/bigdecimal.c#L2558
[22:15:08] jhass: given they made it pointless to use it, yeah
[22:31:36] jhass: %(jpg jpeg gif png).include? filetype
[22:32:50] jhass: haven't seen anybody use member? :D
[22:33:35] jhass: no I haven't just mentioning it!
[22:43:14] jhass: !fact add helpa I need somebody! !help. Not just anybody. !help. You know I need someone. !help
[22:43:27] jhass: I know :P

2019-05-21

[08:32:31] jhass: marz_d`ghostman: in Ruby we tend to prefer modules for these kind of cases
[09:00:41] jhass: marz_d`ghostman: you cannot have a module inherit a class, only include other modules. You'd have your descendants inherit Podio::Item directly and include the module
[09:02:59] jhass: yes that's what I understood
[09:03:32] jhass: if Podio::Item is your class, maybe it could be a module too
[09:18:37] jhass: well I suspected your example is just that, because it seems rather pointless tbh
[09:19:43] jhass: stubbing external dependencies is right, but when that ends up the test just verifying a particular implementation rather than any behavior I just skip those tests
[15:26:40] jhass: Jonopoly: you might want to take a look at capybara which provides such primitives (wait for condition with timeout)

2019-05-20

[17:25:44] jhass: DeBot: opl
[17:26:08] jhass: DeBot: n1
[17:28:53] jhass: that's cheating :P
[17:29:45] jhass: DeBot: id
[17:38:17] jhass: bored? Looking for an adventure? Try Crystal!
[17:38:21] jhass: ACTION hides
[17:38:41] jhass: it has methods...
[17:39:22] jhass: I don't know how...
[19:16:48] jhass: yep, you answered your own question :D
[19:17:02] jhass: two simple lines are better than one complicated one
[21:03:50] jhass: File.write("tmp.svg", svg_data); system("eog tmp.svg")

2019-05-19

[17:02:18] jhass: uhm, can you show the full backtrace? your code doesn't seem to parse any json
[17:17:36] jhass: def foo(a, b); do_stuff_with_a_only; end

2019-04-16

[15:04:35] jhass: well you can just splat an array into Hash.dig, so create (and store) that array however you like
[15:05:00] jhass: depending on your keyspace a simple .split('.')/.join('.') might do