User manual

Series 3700 System Switch/Multimeter Reference Manual Section 2: TSP Programming Fundamentals

3700S-901-01 Rev. C / July 2008 2-39

For example, it sets x to a default value v when x is not set (provided that x is

not set to false).

To select the maximum of two numbers x and y, use the following statement

(note the and operator has a higher precedence than or):

max = (x > y) and x or y

When x > y is true, the first expression of the and is true, so the and results in

its second argument x (which is also true, because it is a number), and then the

or expression results in the value of its first expression, x. When x > y is false,

the and expression is false and so are the or results in its second expression,

The operator not always returns true or false:

print(not nil)

print(not false)

print(not 0)

print(not not nil)

Output of code above:

true

false

Concatenation

TSL denotes the string concatenation operator by ".." (two dots). If any of its

operands is a number, TSL converts that number to a string:

print("Hello ".."World")

print(0 .. 1)

Output of code above:

Hello World