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<Gizmokid2005>
I'm trying to track down a weird ruby issue if anyone has any ideas. Today on multiple machines and different distros (centos and ubuntu via wsl), I've started getting a very cryptic SSL error with ruby and so far haven't been able to track it down. Any suggestions would be appreciated. https://i.imgur.com/ssXpZGZ.png -- the code I'm calling is pretty simple, here: https://github.com/Gizmokid2005/
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<quazimodo>
havenwood: how's the tooling, does it identify type issues pretty well?
<havenwood>
quazimodo: I'd say the tooling is nice but not there yet. I think typeprof seems promising and the interactive site is super cool, but it doesn't handle everything yet. I do like steep a ton, but also a work in progress and needs more docs and examples.
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<quazimodo>
havenwood: haven't had a chance. I'm actually super curious to see how it handles things like immutable types (even if the data is implemented in a mutable way) and also higher order types, generics, etc
<quazimodo>
i never want to work with untyped business code again
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<yogeshs>
in ruby how to pass argument to function by reference
<yogeshs>
?
<yogeshs>
@Azure
<yogeshs>
Anybody pls?
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<yogeshs>
hello
<surrounder>
yogeshs: if someone knows you'll get an answer, be patient
<yogeshs>
ok @surrounder
<leftylink>
as far as I know, *everything* is passed by reference. of course, some objects are immutable so this doesn't help, and also you have no power to change to bindings if your caller, but you can mutate any mutable objects passed to you.
<leftylink>
ugh
<leftylink>
s/change to bindings if/change the bindings of/
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<leftylink>
> you have no power to change the bindings of your caller
<leftylink>
well... unless you do something particularly nasty
<leftylink>
&>> def a(&b); p b.binding.local_variable_set(:x, 777) end; x = 555; a{}; x
<leftylink>
as I noted, without something nasty like that you have no power to change the bindings of your caller, so it is safest to say that all arguments are references that are passed by value.
<leftylink>
if one wishes to achieve a certain goal, one should state what that goal is without presuming what the mechanism to achieve that goal is (e.g. if that goal is to be achieved by passing by reference)
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<leftylink>
hmm I just realised, this is the first timee I've seen that particular syntax ambiguity... when one sees the code a {}, has that passed an empty hash or a do-nothing block? from the behaviour of the above we now know it's the latter, but how could Ruby know? I guess it just has to pick one
<leftylink>
weird huh!
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<pwnd_sfw>
You can probably look to see
<pwnd_sfw>
Thinking about it, I wouldn't know where to start lol
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<prion>
what's a good symbol for the number of arguments of the currently executing function
<prion>
that's always in scope
<prion>
like $# or something
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<prion>
oops wrong channel
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<wald0>
this maybe is not so related to bash, but how i can convert a number into steps? like if i have get the result 127, transform it to 130, or 124 to 120
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<leftylink>
perhaps such a thing might be achieved in three steps. divide, round, multiply
<al2o3-cr>
&>> [127, 124].map { |n| n.round(-1) } # wald0 nearest 10; -2 nearest 100 and so on
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<nyuszika7h>
I'm getting an error with a Rails migration that is making no sense
<nyuszika7h>
ActiveRecord::MismatchedForeignKey: Column `user_id` on table `tasks` does not match column `id` on `users`, which has type `int(11)`. To resolve this issue, change the type of the `user_id` column on `tasks` to be :integer. (For example `t.integer :user_id`).
<nyuszika7h>
both of the keys are int(11), and the same migration worked fine before, but refuses to work in a new environment with the same Ruby and Rails version
<ruby[bot]>
nyuszika7h: we in #ruby do not like pastebin.com, it loads slowly for most, has ads which are distracting and has terrible formatting. Please use https://gist.github.com
<nyuszika7h>
go away bot I used raw
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<nyuszika7h>
responsibilities table didn't exist in my case
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<nyuszika7h>
I see Rails 5.x is security fix only, no idea if they fixed that in Rails 6 but we aren't ready to update another major version in production rn
<nyuszika7h>
but anyway I fixed the migrations and it's working fine now
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<dnadev2>
hi - question about updating certain attributes on the fly, ie: foo.[something ~dynamic here] https://dpaste.org/Fvok
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<havenwood>
dnadev2: What do you mean this to do?: foo."#{i[0]}" = i[1]
<havenwood>
dnadev2: Do you mean to dynamically call a method?: foo.public_send("#{i[0]}=", i[1])
<havenwood>
dnadev2: Ruby doesn't have macros, but it does have metaprogramming. So you can't `foo."bar"` but you can `foo.send "bar"` instead.
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<havenwood>
dnadev2: Yes, you can check if `foo.respond_to? "bar"` then `foo.public_send "bar"`.
<havenwood>
dnadev2: Or rather: foo.respond_to? "bar="
<havenwood>
dnadev2: Or grab foo's attributes and check them at once. There are many ways. Definitely can be done.
<dnadev2>
havenwood, thanks. basically want to update certain attributes of foo. i don't know which attributes, but i do know they will be columns on the foo model.
<havenwood>
dnadev2: Take a look at #update and #assign_attributes to set your attributes all at once rather than iterating.
<Cubixusin[m]>
what is difference `env` vs `ENV` ?
<havenwood>
Cubixusin[m]: The former is a local variable or method. The latter is a core class.