[Chapter 3] 3.2.78 join
Author: Larry Wall, Tom Christiansen & Randal L. Schwartz
Date: 1999-07-02T01:50:55Z

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| Chapter 3 Functions |

### 3.2.78 join

    join EXPR, LIST

This function joins the separate strings of `LIST` into a single string with fields separated by the value of `EXPR`, and returns the string. For example:

    $_ = join ':', $login,$passwd,$uid,$gid,$gcos,$home,$shell;

To do the opposite, see split. To join things together into fixed-position fields, see pack.

The most efficient way to concatenate many strings together is to join them with a null string.

3.2.77 ioctl |  | 3.2.79 keys