set(n) Tcl Built-In Commands set(n)______________________________________________________________________________NAMEset - Read and write variables
SYNOPSISset varName ?value?
_________________________________________________________________DESCRIPTION
Returns the value of variable varName. If value is specified, then set
the value of varName to value, creating a new variable if one doesn't
already exist, and return its value. If varName contains an open
parenthesis and ends with a close parenthesis, then it refers to an
array element: the characters before the first open parenthesis are
the name of the array, and the characters between the parentheses are
the index within the array. Otherwise varName refers to a scalar vari‐
able. Normally, varName is unqualified (does not include the names of
any containing namespaces), and the variable of that name in the cur‐
rent namespace is read or written. If varName includes namespace qual‐
ifiers (in the array name if it refers to an array element), the vari‐
able in the specified namespace is read or written.
If no procedure is active, then varName refers to a namespace variable
(global variable if the current namespace is the global namespace). If
a procedure is active, then varName refers to a parameter or local
variable of the procedure unless the global command was invoked to
declare varName to be global, or unless a variable command was invoked
to declare varName to be a namespace variable.
KEYWORDS
read, write, variable
Tclset(n)