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11:52
<
FullMetalStacker >
#style: I have been told, that it is considered good style to use Ruby's built in methods whenever possible instead of e.g. operators. for example to use .zero? instead of making some if statement with == 0, etc. Is this rule generally true?
11:53
<
FullMetalStacker >
For example which is the best practice of the following 2:
11:53
<
FullMetalStacker >
def array_diff(a, b)
11:53
<
FullMetalStacker >
a - b
11:53
<
FullMetalStacker >
end
11:53
<
FullMetalStacker >
or this:
11:53
<
FullMetalStacker >
a.difference(b)
11:53
<
FullMetalStacker >
def array_diff(a, b)
11:53
<
FullMetalStacker >
end
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12:41
<
leftylink >
well, difference doesnt exist, so I think answer has to be a given there
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<
leftylink >
I think there is only one time when I'd ever use .zero? instead of == 0, and that's when I'm doing something like nums.select(&:zero?)
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12:44
<
leftylink >
however, I pretty much always use .nil? instead of == nil
12:44
<
leftylink >
I don't really have a reason. shorter?
12:45
<
leftylink >
that works for both of them, == 0 is four characters, and .zero? is six. == nil is six characters, and .nil? is four
12:45
<
leftylink >
er, .nil? is five, rather
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12:52
<
sam113101 >
leftylink: it does exist…
13:03
<
FullMetalStacker >
so it is just a matter of tast,e, there is no official style preference?
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19:39
<
havenwood >
sam113101: It doesn't exist for Integers, at least not out of the box. Arrays and Sets notably respond to difference but Numerics don't.
19:40
<
havenwood >
FullMetalStacker: Generally, give preference to a bare method call alone over one with arguments.
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<
ndim >
I am trying to kind of revive an old octopress installation. It used to work with ruby < 2.0, so I am trying to nail down the bundle gem versions to something compatible.
19:51
<
ndim >
"~/.rbenv/versions/1.9.3-p551/bin/bundle install" ends up with "Gem::InstallError: ffi requires Ruby version >= 2.3.
19:52
<
ndim >
How can I find out which gem requires ffi? Gemfile does not list ffi.
19:52
<
ndim >
I might need to nail down whatever requires ffi to an earlier version which does not require an ffi requiring ruby >= 2.0
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20:12
<
aesthetikx >
ndim: is there a Gemfile.lock? that would have it
20:13
<
ndim >
There is not yet.
20:14
<
aesthetikx >
what happens if you run 'bundle lock', will that make a lockfile?
20:14
<
ndim >
I have found the gem requiring ffi by accident (compass 0.12 vs 1.0), but now the next issue appears, and I need to find what requires faraday-net_http.
20:15
<
ndim >
Could not find command "lock".
20:15
<
aesthetikx >
are you trying to get it running with 1.9.3 or are you trying 2.7
20:15
<
aesthetikx >
ruby version*
20:15
<
ndim >
Everything else requires huge amount of updates.
20:15
<
aesthetikx >
I see, yeah
20:16
<
aesthetikx >
which bundler verison, out of curiosity
20:16
<
aesthetikx >
bundler --version
20:16
<
ndim >
I just want to get it up and running so I can do some A/B testing with the old octopress+custom stuff versus something new (jekyll+custom, hugo, etc. pp.)
20:17
<
ndim >
bundle --version gives 1.9.3, as newer bundler versions require newer ruby.
20:19
<
ndim >
Is there no "gem what-requires faraday-net_http" command?
20:22
<
aesthetikx >
well typically its just listed in the Gemfile.lock;
20:22
<
aesthetikx >
can you try gem update bundler and then bundle lock, it should be available at some point, trying to see when that was added
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20:46
<
ndim >
bundler 1.11.2, bundle lock, but Gemfile.lock lists the faraday package in the top level even though Gemfile does not mention faraday
20:47
<
ndim >
I do not really know what I am doing here.
20:48
<
ndim >
Adding faraday to Gemfile with a requirement of '< 0.10' is helpful, as it actually prints the dependency chain.
20:49
<
ndim >
So just guessing faraday '< 2.0', and a few more things install.
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