array = []
File.open(file.txt) do |f|
f.lines.each do |line|
array << line.split.map(&:to_s)
end
end
puts purgeObject
@test = {
"strings" => array
}.to_json
puts @test
I need strings the output to be the following way. I keep getting an array of arrays i.e. [["334455"], ["ABC"]] - what's wrong?
{
"strings" : [
"334455",
"ABC"
]
}
Just do change the line
array << line.split.map(&:to_s)
to
array.concat(line.split.map(&:to_s))
Example :
array = []
array << [1]
array << [2]
array # => [[1], [2]]
array = []
array.concat([11])
array.concat([12])
array # => [11, 12]
Actually Array#map outputs as array of some items. Thus line.split.map(&:to_s) was also giving like [item1,item2,...]. Now if you do array << line.split.map(&:to_s), then that [item1,item2,...] getting inserted into array using #<< method. So if you want to insert only item1,item2,..., then use Array#concat.
You can use foreach method also :
array = []
File.foreach(file.txt) do |line|
array.concat(line.split.map(&:to_s))
end
@test = {
"strings" => array
}.to_json
A more ruby way of doing the same thing would be:
array = File.readlines('file.txt').flat_map(&:split)
@test = {
"strings" => array
}.to_json
readlines is a nice touch same functionality as mine but cleaner looking +1.Or why not something like
@test = {
"strings" => File.open("file.txt",&:read).split("\n").flat_map(&:split)
}.to_json
#=> "{\"strings\":[\"this\",\"is\",\"a\",\"test\",\"file\",\"putting\",\"strings\",\"into\",\"an\",\"array\"]}"
JSON.parse(@test)
#=> {"strings"=>["this", "is", "a", "test", "file", "putting", "strings", "into", "an", "array"]}
File.open { .. }, did you check the output ofarray?array << line.split.map(&)... where is the method name inarray << line.split.map(&..???)array << line.split.map(&:to_s). Thanks.puts array, after the block..Arraysis good now.@testreturn[["334455"], ["ABC"]]