CoCoA:OpenLog

OpenLog

open a log of a CoCoA session

Description

This function opens the output device D and starts to record the

output from a CoCoA session on D. The <ttref>CloseLog</ttref> closes the

device D and stops recording the CoCoA session on D.

At present the choices for the device D are an output file (see

<ttref>OpenOFile</ttref>) or an output string (see <ttref>OpenOString</ttref>). Several output

devices may be open at a time. If the panel option Echo is set to TRUE, both the input and output of the CoCoA session are logged; otherwise, just the output is logged.

Example

  D := OpenOFile(<quotes>MySession</quotes>);
  OpenLog(D);
  1+1;
2
-------------------------------
  G := 1;
  Set Echo;
  2+2;
2 + 2
4
-------------------------------
  F := 2;
F := 2
  CloseLog(D);
CloseLog(D)
  UnSet Echo;
SET(Echo, FALSE)

-- The contents of <quotes>MySession</quotes>:
2
-------------------------------
2 + 2
4
-------------------------------
F := 2
CloseLog(D)

Syntax

OpenLog(D:DEVICE):NULL

Introduction to IO

OpenIFile

OpenOFile

OpenIString

OpenOString

Unset

   <type>io</type>
   <type>printing</type>