Models 707B and 708B Switching Matrix Reference Manual
Section 6: Instrument programming
707B-901-01 Rev. B / January 2015
6-23
Break
The
break
statement can be used to terminate the execution of a
while
,
repeat
, or
for
loop,
skipping to the next statement after the loop. A break ends the innermost enclosing loop.
Return and break statements can only be written as the last statement of a block. If it is necessary to
return or break in the middle of a block, an explicit inner block can be used.
The output you get from these examples may vary depending on the data format settings of the
instrument.
Example: Break with while statement
local numTable = {5, 4, 3, 2, 1}
local k = table.getn(numTable)
local breakValue = 3
while k > 0 do
if numTable[k] == breakValue then
print("Going to break and k = ", k)
break
end
k = k - 1
end
if k == 0 then
print("Break value not found")
end
This example defines a
break
value
(
breakValue
) so that the
break
statement is used to exit the
while
loop
before the value of k reaches
0
.
Output:
Going to break and k = 3
Example: Break with while statement enclosed by comment delimiters
local numTable = {5, 4, 3, 2, 1}
local k = table.getn(numTable)
--local breakValue = 3
while k > 0 do
if numTable[k] == breakValue then
print("Going to break and k = ", k)
break
end
k = k - 1
end
if k == 0 then
print("Break value not found")
end
This example defines a break value
(
breakValue
), but the break value
line is preceded by comment delimiters
so that the break value is not
assigned, and the code reaches the
value
0
to exit the
while
loop.
Output:
Break value not found
