Remove a group on strings from an object in ruby-CodePudding

So, I have the following

removed_caps = self.user.caps.reject { |c| c == 'test' || c == 'test1'}

I want to have test and test1 as configs so that I can add to these in the future.

so something like:

caps_to_remove = ENV['BLACK_LIST']
split_caps_to_remove = caps_to_remove.split(' ')
puts split_caps_to_remove -->>> ["test", "test1"]

How do I incorporate split_caps_to_remove in the original code?

Thanks.

CodePudding user response：

You could change your code to:

removed_caps = self.user.caps.reject { |c| split_caps_to_remove.include?(c) }

CodePudding user response：

Use Fixed-String Methods

Assuming you have some variables defined as in the example below, then you can use String#delete or String#delete! as a faster way to remove your unwanted characters. Consider:

caps = ENV['BLACKLIST']='TE'
str1, str2 = 'TEST', 'TEST1'

[str1, str2].map { _1.delete caps }
#=> ["S", "S1"]

Fewer methods in a chain are often faster, and String methods that operate on a fixed String are often and order of magnitude faster Regexp-related methods like #gsub or iterating over a collection.

Use Fixed-String Methods

See Also