/Ruby/Ruby delete first element of array

Ruby delete first element of array

a = [0,1,2,3]

a.drop(1)
# => [1, 2, 3] 

a
# => [0,1,2,3]

Ruby exclude from slice

# First of all you have to use splat (*) operator. 
# Then instead of using .slice() and .except() together, you can do this is more efficient way.

columns_to_show = ['age', 'gender', 'cast', 'fee_status']
columns_to_show = columns_to_show - hidden_columns if hidden_columns

patient.slice(*columns_to_show).values

patient.slice('age', 'gender', 'cast', 'fee_status').except(*hidden_columns)
 => {"cast"=>"black", "fee_status"=>"paid"}

Source: stackoverflow.com

Similar codes

1 vote129 views2 answers
New line in ruby
Ruby
1 vote143 views1 answer
Rails benchmark
Ruby
0 vote126 views1 answer
Ruby rails find data field type
Ruby
0 vote124 views1 answer
Ruby regex replace capture group
Ruby
-1 vote174 views2 answers
Get single hash key ruby
Ruby
-2 votes137 views2 answers
Roblox home
Ruby
1 vote128 views3 answers
Rails generate rake task
Ruby
1 vote130 views1 answer
How to get new line to display in rails
Ruby
0 vote170 views3 answers
SyntaxError: /mnt/c/myAppFile/hello-rails-react/app/javascript/components/Greeting.js: Support for the experimental syntax 'jsx' isn't currently enabled rails
Ruby
0 vote137 views1 answer
How do I add index's to a migration in rails
Ruby