Table of Contents
sum
Table of Contents
Prototype: sum(list)
Return type: real
Description: Return the sum of the reals in list
.
This function can accept many types of data parameters.
This function might be used for simple ring computation. Of course, you could
easily combine sum
with readstringarray
or readreallist
etc., to collect
summary information from a source external to CFEngine.
Arguments:
list
:string
, in the range:.*
Example:
body common control
{
bundlesequence => { "test" };
}
bundle agent test
{
vars:
"adds_to_six" ilist => { "1", "2", "3" };
"six" real => sum("adds_to_six");
"adds_to_zero" rlist => { "1.0", "2", "-3e0" };
"zero" real => sum("adds_to_zero");
reports:
"six is $(six), zero is $(zero)";
}
Output:
R: six is 6.000000, zero is 0.000000
Because $(six)
and $(zero)
are both real numbers, the report that is
generated will be:
six is 6.000000, zero is 0.000000
Notes:
History: Was introduced in version 3.1.0b1,Nova 2.0.0b1 (2010). The collecting function behavior was added in 3.9.
See also: product()
, about collecting functions, and data
documentation.