High Voltage SourceMeter Instrument Reference Manual Section 13:
Introduction to TSP commands
2470-901-01 Rev. A / May 2019 13-17
Bitwise operators
Operator Description
Logical and bitwise operators
The logical operators in Lua are and, or, and not. All logical operators consider both false and
nil
as false and anything else as true.
The operator not always returns false or true.
The conjunction operator and returns its first argument if the first argument is false or nil;
otherwise, and returns its second argument. The disjunction operator or returns its first argument if
this value is different from nil and false; otherwise, or returns its second argument. Both and
and
or
use shortcut evaluation, that is, the second operand is evaluated only if necessary.
The example output you get may vary depending on the data format settings of the instrument.
Example 1
print(10 or eventlog.next())
print(nil or "a")
print(nil and 10)
print(false and eventlog.next())
print(false and nil)
print(false or nil)
10
a
nil
false
false
nil
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