Ruby | Array map!() operation Last Updated : 06 Dec, 2019 Comments Improve Suggest changes Like Article Like Report Array#map!() : map!() is a Array class method which returns a new array containing the values returned by the block. Syntax: Array.map!() Parameter: Array Return: a new array containing the values returned by the block. Example #1 : Ruby # Ruby code for map!() method # declaring array a = [18, 22, 33, 3, 5, 6] # declaring array b = [1, 4, 1, 1, 88, 9] # declaring array c = [18, 22, 3, 3, 50, 6] # map! puts "map! method : #{a.map! {|num| num > 10 }}\n\n" # map! puts "map! method : #{b.map! {|x| x.odd? }}\n\n" Output : map! method : [true, true, true, false, false, false] map! method : [true, false, true, true, false, true] Example #2 : Ruby # Ruby code for map!() method # declaring array a = [18, 22, 33, 3, 5, 6] # declaring array b = [1, 4, 1, 1, 88, 9] # declaring array c = [18, 22, 3, 3, 53, 6] # map! puts "map! method : #{c.map! {|num| num > 10 }}\n\n" # map! puts "map! method : #{a.map! {|num| num > 10 }}\n\n" Output : map! method : [true, true, false, false, true, false] map! method : [true, true, true, false, false, false] Comment More infoAdvertise with us Next Article Ruby | Array map!() operation M mayank5326 Follow Improve Article Tags : Ruby Ruby-Methods Ruby Array-class Similar Reads Ruby | Array at() operation Array#at() : at() is an Array class method which returns the element at the specific argumented index value. Syntax: Array.at() Parameter: - Arrays to search elements. - index to search Return: Array element at a specific index value Code #1 : Example for at() method Ruby # Ruby code for at() method 1 min read Ruby | Array compact!() operation Array#compact! () : compact! () is a Array class method which returns the array after removing all the 'nil' value elements (if any) from the array. If there are no nil values in the array it returns back the nil value. Syntax: Array.compact!() Parameter: Array to remove the 'nil' value from. Return 2 min read Ruby | Array compact() operation Array#compact () : compact () is a Array class method which returns the array after removing all the 'nil' value elements (if any) from the array. Syntax: Array.compact() Parameter: Array to remove the 'nil' value from. Return: removes all the nil values from the array. Code #1 : Example for compact 2 min read Ruby | Array dig() operation Array#dig() : dig() is a Array class method which extracts the specific element out of the high dimension sequences. Syntax: Array.dig() Parameter: element position. Return: element from a specific location in sequence, returning nil if any intermediate step is nil. Code #1 : Example for dig() metho 1 min read Ruby | Array clear() operation Array#clear() : clear() is an Array class method which removes all the array elements from it. Syntax: Array.clear() Parameter: Arrays to clear off Return: array with all elements cleared Code #1 : Example for clear() method Ruby # Ruby code for clear() method # declaring array a = [1, 2, 3, 4] # de 1 min read Ruby | Array count() operation Array#count() : count() is a Array class method which returns the number of elements in the array. It can also find the total number of a particular element in the array. Syntax: Array.count() Parameter: obj - specific element to found Return: removes all the nil values from the array. Code #1 : Exa 2 min read Ruby | Array any?() operation any?() is an Array class method which checks for the presence of a pattern and passes each element of the collection to the given block. Syntax: Array.any?() Parameter: array for testing Return: true if the block ever returns a value other than false or nil otherwise return false. Example #1 : Ruby 1 min read Ruby | Array delete() operation Array#delete() : delete() is a Array class method which returns the array after deleting the mentioned elements. It can also delete a particular element in the array. Syntax: Array.delete() Parameter: obj - specific element to delete Return: last deleted values from the array. Code #1 : Example for 2 min read Ruby | Array class empty?() operation Array#empty?() : empty?() is a Array class method which checks if the array is empty or not. Syntax: Array.empty?() Parameter: Array Return: true - if no element is present in the array; otherwise false Code #1 : Example for empty?() method Ruby # Ruby code for empty?() method # declaring array a = 1 min read Ruby | Array collect!() operation Array#collect!() : collect!() is an Array class method which invokes the argument block once for each element of the array, replacing the element with the value returned by the block Syntax: Array.collect!() Parameter: Arrays in which we want elements to be invoked Return: array with all the envoked 1 min read Like