Add new value to top of an Array

[Sam T.]

Hi, Does anyone know how to add a new value to the top of an array,
instead of the bottom. eg. When using <<, this appends to the end.

 

[J-H Johansen]

[Note: parts of this message were removed to make it a legal post.]

Hi, Does anyone know how to add a new value to the top of an array,
instead of the bottom. eg. When using <<, this appends to the end.

a = [ "b", "c", "d" ]

a.unshift("a") => ["a", "b", "c", "d"]

 

[Ian M. Asaff]

[Note: parts of this message were removed to make it a legal post.]

ruby-1.9.2-p136 :009 > x = [2,3,4]
=> [2, 3, 4]
ruby-1.9.2-p136 :010 > x.unshift(5)
=> [5, 2, 3, 4]

 

[Sam T.]

SOLVED: Cheers...

 

[Anurag Priyam]

Hi, Does anyone know how to add a new value to the top of an array,
instead of the bottom. eg. When using <<, this appends to the end.

Array#unshift

 

[botp]

SOLVED: Cheers...

note, there is also Array#insert.
i usually use it since

a. i can insert *anywhere on the array w autofill features,
b. a similar method of the same name also works on Strings
c. i just need to remember one command ;-)

btw, others may not think that "top" of array is first element ;-)

best regards -botp