Update Function Timestamp {R}←X(1159⌶)Y

Y is an array of function names in the same format as the right argument of ⎕AT. For further information, see Attributes.

X is an array of function attributes in the same format as the output of ⎕AT.

The shy result R is a vector of numeric items, one per each specified function containing the following values:

0	No change was made; the name is not that of a function, or the function was locked
1	The time and user stamp were updated

Note that the last item of the function timestamp must be set to 0 otherwise 1159 ⌶ will generate a DOMAIN ERROR. Additionally, the timestamp must be greater than 1970 1 1 0 0 0 0.

Example

      ]disp ⎕AT'Christmas'
┌→────┬───────────────────┬─┬───────┐
│0 0 0│2013 3 1 11 14 58 0│0│Richard│
└~───→┴~─────────────────→┴─┴───────┘

      x←⎕AT 'Christmas'
      x[2 4]←(2012 12 25 11 59 0 0)('Santa')
      x (1159⌶) 'Christmas'

      ]disp ⎕AT'Christmas'
┌→────┬────────────────────┬─┬─────┐
│0 0 0│2012 12 25 11 59 0 0│0│Santa│
└~───→┴~──────────────────→┴─┴────→┘