diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/string.rb | 4 | ||||
| -rw-r--r-- | activesupport/lib/active_support/core_ext/string/access.rb | 58 |
2 files changed, 61 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/core_ext/string.rb b/activesupport/lib/active_support/core_ext/string.rb index 3056f74744..fce0557c64 100644 --- a/activesupport/lib/active_support/core_ext/string.rb +++ b/activesupport/lib/active_support/core_ext/string.rb @@ -1,7 +1,9 @@ require File.dirname(__FILE__) + '/string/inflections' require File.dirname(__FILE__) + '/string/conversions' +require File.dirname(__FILE__) + '/string/access' class String #:nodoc: - include ActiveSupport::CoreExtensions::String::Inflections + include ActiveSupport::CoreExtensions::String::Access include ActiveSupport::CoreExtensions::String::Conversions + include ActiveSupport::CoreExtensions::String::Inflections end diff --git a/activesupport/lib/active_support/core_ext/string/access.rb b/activesupport/lib/active_support/core_ext/string/access.rb new file mode 100644 index 0000000000..f59690b032 --- /dev/null +++ b/activesupport/lib/active_support/core_ext/string/access.rb @@ -0,0 +1,58 @@ +module ActiveSupport #:nodoc: + module CoreExtensions #:nodoc: + module String #:nodoc: + # Makes it easier to access parts of a string, such as specific characters and substrings. + module Access + # Returns the character at the +position+ treating the string as an array (where 0 is the first character). + # + # Examples: + # "hello".at(0) # => "h" + # "hello".at(4) # => "o" + # "hello".at(10) # => nil + def at(position) + self[position, 1] + end + + # Returns the remaining of the string from the +position+ treating the string as an array (where 0 is the first character). + # + # Examples: + # "hello".from(0) # => "hello" + # "hello".from(2) # => "llo" + # "hello".from(10) # => nil + def from(position) + self[position..-1] + end + + # Returns the beginning of the string up to the +position+ treating the string as an array (where 0 is the first character). + # + # Examples: + # "hello".to(0) # => "h" + # "hello".to(2) # => "hel" + # "hello".to(10) # => "hello" + def to(position) + self[0..position] + end + + # Returns the first character of the string or the first +limit+ characters. + # + # Examples: + # "hello".first # => "h" + # "hello".first(2) # => "he" + # "hello".first(10) # => "hello" + def first(limit = 1) + self[0..(limit - 1)] + end + + # Returns the last character of the string or the last +limit+ characters. + # + # Examples: + # "hello".last # => "o" + # "hello".last(2) # => "lo" + # "hello".last(10) # => "hello" + def last(limit = 1) + self[(-limit)..-1] + end + end + end + end +end
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