[LRUG] [Help request] Programmatically inserting user data into js chart

[Jesse Waites]

Update: I tried it with Tom's pretty generate JSON method and am a little
closer - @jsonish is now:

@jsonish: "[\n {\n \"key\": 0,\n \"value\": 5\n },\n {\n \"key\": 1,\n
\"value\": 3\n },\n {\n \"key\": 2,\n \"value\": 2\n }\n]"

So looks like I need to strip the new lines out? Or rather, not put them in
in the first place? Its good to know I was close in my solution path.

On Wed, Jun 8, 2016 at 1:03 PM, John Cinnamond <jc at panagile.com> wrote:

> As an aside, `map` returns an enumerator if you don’t give it a block, and
> enumerators have a `with_index` method. So instead of:
>
>     array.each_with_index.map { |value, idx| … }
>
> You can say:
>
>     array.map.with_index { |value, idx| … }
>
> This only saves you 5 characters, but I think it makes the intent slightly
> clearer.
>
>
> On Wed, 08 Jun 2016 at 17:57 Tom Stuart <Tom Stuart
> <Tom+Stuart+%3Ctom at codon.com%3E>> wrote:
>
>> On 8 Jun 2016, at 14:32, Jesse Waites <jesse.waites at gmail.com> wrote:
>> > def make_jsonish(array)
>> > array.each_with_index do |num, i|
>> > puts "{ key: #{i}, value: #{num}},"
>> > end
>> > end
>>
>> This looks pretty close to being right, but you want to return a string
>> by joining all the individual lines, not print them out. For example:
>>
>> def make_jsonish(array)
>> array.each_with_index.map { |num, i|
>> "{ key: #{i}, value: #{num}},"
>> }.join("\n")
>> end
>>
>> Less significantly, it would be better to rely on Ruby to turn the
>> resulting data structure (including enclosing square brackets) into JSON
>> for you, so that you’re not responsible for the conversion yourself:
>>
>> def make_jsonish(array)
>> elements = array.each_with_index.map { |num, i|
>> { key: i, value: num}
>> }
>> JSON.pretty_generate(elements)
>> end
>>
>> Cheers,
>> -Tom
>> _______________________________________________
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>
>
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-- 
Jesse Waites
JesseWaites.com
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