/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 vote201 views1 answer
Ruby how to filter through excel
Ruby
0 vote198 views1 answer
Rails start id to 1000
Ruby
0 vote213 views1 answer
Rails g migration foreign key optionnal
Ruby
2 votes223 views1 answer
Ruby reorder keys in hash
Ruby
0 vote260 views5 answers
Return tuple or null
Ruby
1 vote213 views1 answer
How to comment out embedded ruby
Ruby
1 vote229 views1 answer
How to format date and time in rails
Ruby
0 vote222 views1 answer
How to match email in regex in ruby
Ruby
0 vote228 views1 answer
Rails on_delete cascade not working
Ruby
0 vote218 views1 answer
Ruby max 2 numbers
Ruby