return
The return
statement is used to exit a subroutine at an arbitrary point and return to the calling location
Syntax
return
Details
A subroutine will automatically return to the location it was called from when the end of its body is reached. However it may be desirable to explicitly exit the subroutine at some other point in which case the return
statement is used.
Example
#
# Download two files into named buffers
# using a subroutine to do so
#
gosub getfile(data1, "http://intranet/datadump1.json")
gosub getfile(data2, "http://someotherserver/anotherfile.xml")
# (Script to do something with the data goes here)
#
# Argument 1: the name of the buffer to store the data
# Argument 2: the URL of the file to download
#
subroutine getfile {
if (${SUBARG.COUNT} != 2) {
print "Error: This subroutine requires two arguments
return
}
buffer ${SUBARG_1} = http GET "${SUBARG_2}"
# There is an implicit 'return' here
}
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