Keithley 3720

Series 3700A System Switch/Multimeter Reference Manual Section 10: Instrument programming
3700AS-901-01 Rev. D/June 2018 10-25
Example: While
list = {
"One", "Two", "Three", "Four", "Five", "Six"}
print("Count list elements on numeric index:")
element = 1
while list[element] do
print(element, list[element])
element = element + 1
end
This loop exits when list[element]
= nil.
Output:
Count list elements on
numeric index:
1 One
2 Two
3 Three
4 Four
5 Five
6 Six
Repeat until loops
To repeat a command, you use the repeat ... until statement. The body of a repeat statement
always executes at least once. It stops repeating when the conditions of the until clause are met.
repeat
block
until expression
Where:
• block consists of one or more Lua statements
• expression is Lua code that evaluates to either true or false
The output you get from this example may vary depending on the data format settings of the
instrument.
Example: Repeat until
list = {"One", "Two", "Three", "Four", "Five", "Six"}
print("Count elements in list using repeat:")
element = 1
repeat
print(element, list[element])
element = element + 1
until not list[element]
Output:
Count elements in list
using repeat:
1 One
2 Two
3 Three
4 Four
5 Five
6 Six