This community-built FAQ covers the “Been Around the Block a Few Times” exercise from the lesson “Blocks, Procs, and Lambdas”.
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Learn Ruby
FAQs on the exercise Been Around the Block a Few Times
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A request for a bit more clarification: how does method syntax impact the bigger picture? For example, are both of these approaches (.select vs lambda) valid?
ints = odds_n_ends.select { |x| x.is_a? Integer }
int_search = lambda { |x| x.is_a? Integer }
ints_1 = odds_n_ends.select(&int_search)
If so, is one preferable to the other?
Although I got it correct, why does this following error appear?
(test):14: warning: found = in conditional, should be ==
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I got the same error even though my code passed/I was able to proceed and I saw zero instances of the error actually being applicable to my code; I think it’s just a bug.
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I think it’s totally context-dependent; in this case, it truly doesn’t matter at all given the context. Ruby, it seems, really stresses the whole “multiple ways to do the same thing”, with each of those ways possibly being more or less applicable given the context; here, it seems like the context doesn’t necessitate one vs. the other, so it’s purely arbitrary to use a lambda or a proc.
This is coming from a total newbie, so take that with a grain of salt or three - just my two cents.
my answer was basically the same but without the space in the block, as below:
ints = odds_n_ends.select { |x| x.is_a?Integer }
This did not produce the error, but did so with the space. I don’t know why though!
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