String Subcommands - length index range
Tcl commands often have "subcommands". The
string command is an example of one of these. The
string command treats its first
argument as a subcommand. Utilizing subcommands is a good way to
make one command do multiple things without using cryptic names.
For instance, Tcl has
instead of, say,
This lesson covers these string subcommands:
- Returns the length of
- Returns the
indexth character from
- Returns a string composed of the characters from
set string "this is my test string" puts "There are [string length $string] characters in \"$string\"" puts "[string index $string 1] is the second character in \"$string\"" puts "\"[string range $string 5 10]\" are characters between the 5'th and 10'th"