time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}

[x1]

What's the best way to make the first item below yield a hash instead
of an array in one line? I'm struggling

#doesnt work
time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}
puts time.type # Array

#works
time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}.first
puts time.type # Hash
puts time['min']

Thanks in advance

 

[x1]

Sorry --Subject was supposed to be "Need help creating hash from an array"

 

[x1]

ok..nvrmind.. I think I got it:
time = Hash[*["min", "sec"].collect { |i| [i, Time.now.send(i)]}.flatten]

Sorry --Subject was supposed to be "Need help creating hash from an array"

What's the best way to make the first item below yield a hash instead
of an array in one line? I'm struggling

#doesnt work
time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}
puts time.type # Array

#works
time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}.first
puts time.type # Hash
puts time['min']

Thanks in advance

 

[ara.t.howard]

What's the best way to make the first item below yield a hash instead
of an array in one line? I'm struggling

#doesnt work
time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}
puts time.type # Array

#works
time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}.first
puts time.type # Hash
puts time['min']

harp:~ > cat a.rb
now = Time.now
h = %w( min sec ).inject({}){|h,k| h.update k => now.send(k).to_i}

p h


harp:~ > ruby a.rb
{"sec"=>44, "min"=>26}


in particular you don't want to call Time.now inside the loop: you'll otherwise
sometimes get

{"sec"=>0, "min"=>42}

when you should have gotten

{"sec"=>59, "min"=>41}

regards.

-a

 

[x1]

ah ok. Good point. I'm learning

Thanks so much ara!

What's the best way to make the first item below yield a hash instead
of an array in one line? I'm struggling

#doesnt work
time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}
puts time.type # Array

#works
time = ["min", "sec"].collect {|i| {i=> Time.now.send(i).to_i}}.first
puts time.type # Hash
puts time['min']

harp:~ > cat a.rb
now = Time.now
h = %w( min sec ).inject({}){|h,k| h.update k => now.send(k).to_i}

p h


harp:~ > ruby a.rb
{"sec"=>44, "min"=>26}


in particular you don't want to call Time.now inside the loop: you'll otherwise
sometimes get

{"sec"=>0, "min"=>42}

when you should have gotten

{"sec"=>59, "min"=>41}

regards.

-a