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UPDATE(1)             User Contributed Perl Documentation            UPDATE(1)

NAME
       update -- command line setting of Interchange databases

VERSION
       1.0

SYNOPSIS
          update -c catalog [-f field -k key [-t table] value]

DESCRIPTION
       Interchange's "update" is a rudimentary method of directly setting the
       DBM files (not the ASCII files) of a Interchange DBM database.

       NOTE: This command DOES NOT APPLY TO SQL databases. They have their own
       command line monitors that are more flexible.

OPTIONS
       -c name
           Sets the catalog for which "update" operates. It reads the
           catalog.cfg file to retrieve database settings.

       -f field
           The name of the field to set.

       -n name
           The name of the table to set. If the table is not a DBM database
           the "update" program will terminate with an error.

SEE ALSO
       http://www.icdevgroup.org/

AUTHOR
       Mike Heins

perl v5.20.2                      2015-08-31                         UPDATE(1)
update(n)                    Tcl Built-In Commands                   update(n)

______________________________________________________________________________

NAME
       update - Process pending events and idle callbacks

SYNOPSIS
       update ?idletasks?
______________________________________________________________________________

DESCRIPTION
       This command is used to bring the application "up to date" by entering
       the event loop repeatedly until all pending events (including idle
       callbacks) have been processed.

       If the idletasks keyword is specified as an argument to the command,
       then no new events or errors are processed;  only idle callbacks are
       invoked.  This causes operations that are normally deferred, such as
       display updates and window layout calculations, to be performed
       immediately.

       The update idletasks command is useful in scripts where changes have
       been made to the application's state and you want those changes to
       appear on the display immediately, rather than waiting for the script
       to complete.  Most display updates are performed as idle callbacks, so
       update idletasks will cause them to run.  However, there are some kinds
       of updates that only happen in response to events, such as those
       triggered by window size changes; these updates will not occur in
       update idletasks.

       The update command with no options is useful in scripts where you are
       performing a long-running computation but you still want the
       application to respond to events such as user interactions;  if you
       occasionally call update then user input will be processed during the
       next call to update.

EXAMPLE
       Run computations for about a second and then finish:

              set x 1000
              set done 0
              after 1000 set done 1
              while {!$done} {
                  # A very silly example!
                  set x [expr {log($x) ** 2.8}]

                  # Test to see if our time-limit has been hit.  This would
                  # also give a chance for serving network sockets and, if
                  # the Tk package is loaded, updating a user interface.
                  update
              }

SEE ALSO
       after(n), interp(n)

KEYWORDS
       asynchronous I/O, event, flush, handler, idle, update

Tcl                                   7.5                            update(n)