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#ruby - 18 May 2019

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[01:25:26] bjpenn: any idea what the difference is between attr_reader :foo vs attr_reader foo
[01:25:31] bjpenn: when would you use one vs the other?
[01:26:42] bjpenn: i guess attr_reader foo is not valid syntax?
[01:26:46] phaul: the latter just references a local variable foo or method call on self foo
[01:27:17] phaul: syntactically it's valid
[01:27:37] phaul: probably undefined variable or method call error though
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[01:28:40] phaul: :foo is just a Symbol constant that's passed to the method attr_reader. no special syntax is involved..
[01:29:29] bjpenn: so :foo is a symbol, and symbols can be used to assign to something?
[01:29:33] bjpenn: like :foo = 5?
[01:29:54] bjpenn: i guess where im confused is, in other languages
[01:30:17] mozzarella: you can't assign to symbols
[01:30:17] phaul: no. :foo is a symbol and it's just any other object with no special behavioour, it's like 5, 'blah' , 3.14 etc
[01:30:43] bjpenn: so in this case, it represents the class variable @foo right?
[01:30:46] bjpenn: attr_reader :foo does
[01:30:46] phaul: it can be thought of as a constant string
[01:31:33] phaul: attr_reader is a method that defines a getter method dynamically based on the symbol it got
[01:32:05] phaul: and the getter method will use the symbol name to access the instance variable too.
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[01:33:05] bjpenn: ok i guess im clear now
[01:33:11] bjpenn: it was confusing a little bit Symbol vs variable
[01:33:36] bjpenn: variables are used to point to something. Symbols are a value, just like whatever is in a variable
[01:33:53] bjpenn: phaul: thanks!
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[05:51:37] banisterfiend: split tunnelling is working, finally 😍
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[05:59:19] babylink: hi friends of my heart
[05:59:36] banisterfiend: babylink who r u
[05:59:50] babylink: banisterfiend an actual baby
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[06:01:33] solars: hi, is there any chatbot framework for FB or telegram that actually supports something like Alexa/Snips has, where you define patterns for sentences and variable slots?
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[06:54:05] syndikate: Okay, figured out access logs, now only thing left is to sync the log file
[06:54:17] syndikate: As of now WEBrick only syncs it on process exit
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[08:38:38] johnp: women are people too and must also be respected
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[13:15:09] burzos: Is there some way to disable coercion in `dry-validation` Schemas?
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[15:50:57] Exuma: Is ruby slow when passing an extremely large object as an argument
[15:51:03] Exuma: (the rails request object)
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[15:51:11] Exuma: or will it pass by a reference and there will be 0 slowdown
[15:53:26] bhaak: it's passed by reference
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[16:35:57] Exuma: ok thanks
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[19:49:04] troydm: hey guys! how do I specify in my gem a minimal version of ruby it supports?
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[19:56:04] jettrevolver: hi, is this the defacto ruby irc thingy?
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[20:22:12] troydm: jettrevolver: seems so
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[20:55:50] darix: troydm: https://github.com/rails/rails/blob/master/rails.gemspec#L12
[20:57:00] troydm: darix: ic, thx
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