In ruby, how can I convert a function's response/results into an array?

Question

In ruby, how can I convert a function response into array for later usage?

array = []
def function (subject1)
    results = client.get('/subjects', :genre => subject1)
    results.each { |r| puts r.title }
    array << r.title
end

function(subject1)

My code looks like something similar above. My results however are never stored. Please and thanks for your help :)

What does results = client.get(...) return into results? Is it already an array? It's at least enumerable, since you're doing results.each... — lurker
– lurker, Commented Mar 18, 2015 at 16:58
try results.map(&:title) as the last line in place of ...each and array <<... this will return an Array of all titles from results so really it could be 1 line client.get('/subjects', :genre => subject1).map(&:title) will have the same result. The you just store it in a variable a = function(subject1) — engineersmnky
– engineersmnky, Commented Mar 18, 2015 at 17:00
yes, client.get('...') turn into real results that I limit by choosing a subject in the genre. @lurker — marriedjane875
– marriedjane875, Commented Mar 18, 2015 at 17:04
results.each { |r| array << r.title } is what you're looking for — Duck1337
– Duck1337, Commented Mar 18, 2015 at 17:09

coderhs · Accepted Answer · 2015-03-18 17:10:05Z

2

Each method will iterate through every element whereas map would return an array in itself.

def function(subject1)
    results = client.get('/subjects', :genre => subject1)
    results.map { |r| r.title }
end

function(subject1)

answered Mar 18, 2015 at 17:10

coderhs

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2 Comments

marriedjane875 Over a year ago

so to call on the array later i would just put results.map ?

coderhs Over a year ago

you can save the result to a variable like so response = function(subject1)

steenslag · Accepted Answer · 2015-03-18 17:14:11Z

1

"My results however are never stored" - store the result then:

result = function(subject1)

answered Mar 18, 2015 at 17:14

steenslag

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Comments

Duck1337 · Accepted Answer · 2015-03-18 17:24:15Z

-2

Or you can make array a global var

$array = []
def function (subject1)
  results = client.get('/subjects', :genre => subject1)
  results.each { |r| $array << r.title }
end

function(subject1)

Or you can do this

array = []
def function (subject1)
  results = client.get('/subjects', :genre => subject1)
  results.each { |r| puts r.title }
end

array = function(subject1)

edited Mar 18, 2015 at 17:24

answered Mar 18, 2015 at 17:17

Duck1337

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