TCL_ExistVar

Return %T if a tcl variable exists

Calling Sequence

OK=TCL_ExistVar(varname [,interp])

Arguments

:varname character string. Contains the name of the tcl/tk variable. : :interp optional character string parameter. Name of the slave tcl

interpreter in which the operation has to be performed. If not provided, it defaults to the main tcl interpreter created by Scilab.

: :ok boolean. %T if varname exists. :

Description

This routine allows to test if a tcl variable exists.

More information about Tcl/Tk: http://www.tcl.tk/doc/

Examples

`TCL_SetVar`_("Scilab","OK")
`TCL_GetVar`_("Scilab")
`TCL_UnsetVar`_("Scilab")
TCL_ExistVar("Scilab")

`TCL_SetVar`_("aa",1)
`TCL_CreateSlave`_('SlaveInterp');
`TCL_SetVar`_("aa",2,'SlaveInterp')
TCL_ExistVar("aa")
`TCL_GetVar`_("aa")
`TCL_UnsetVar`_("aa")
`TCL_GetVar`_("aa",'SlaveInterp')
`TCL_UnsetVar`_("aa",'SlaveInterp')
TCL_ExistVar("aa",'SlaveInterp')
`TCL_DeleteInterp`_('SlaveInterp')

See Also

• ScilabEval tcl instruction : Evaluate a string with scilab interpreter
• TCL_EvalFile Reads and evaluate a tcl/tk file
• TCL_EvalStr Evaluate a string whithin the Tcl/Tk interpreter
• TCL_GetVar Get a tcl/tk variable value
• TCL_SetVar Set a tcl/tk variable value
• TCL_UnsetVar Remove a tcl variable
• TCL_UpVar Make a link from a tcl source variable to a tcl destination variable
• TCL_CreateSlave Create a TCL slave interpreter