/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

0 vote177 views3 answers
Ruby for
Ruby
0 vote168 views1 answer
Pg_ctl: no database directory specified and environment variable PGDATA unset
Ruby
4 votes194 views1 answer
Ruby file extension
Ruby
0 vote177 views1 answer
Rails debug
Ruby
0 vote257 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
2 votes119 views1 answer
Ruby tr
Ruby
0 vote171 views1 answer
Rails filter hashes by key value
Ruby
0 vote166 views1 answer
How to install webpck on ubuntu globally
Ruby
0 vote182 views1 answer
Ruby pass array as arguments
Ruby
0 vote178 views10 answers
Eval)free robux 2000
Ruby