Table of Contents
grep
Table of Contents
Prototype: grep(regex, list)
Return type: slist
Description: Returns the sub-list if items in list
matching the
anchored regular expression regex
.
This function can accept many types of data parameters.
Arguments:
regex
: regular expression, in the range:.*
list
:string
, in the range:.*
Example:
body common control
{
bundlesequence => { "test" };
}
bundle agent test
{
vars:
"mylist" slist => { "One", "Two", "Three", "Four", "Five" };
"Tlist" slist => grep("T.*","mylist");
"empty_list" slist => grep("ive","mylist");
"datalist" data => parsejson('[1,2,3, "Tab", "chive"]');
"data_Tlist" slist => grep("T.*","datalist");
"data_empty_list" slist => grep("ive","datalist");
"todo" slist => { "mylist", "Tlist", "empty_list", "datalist", "data_Tlist", "data_empty_list" };
"$(todo)_str" string => format("%S", $(todo));
reports:
"$(todo): $($(todo)_str)";
}
Output:
R: mylist: { "One", "Two", "Three", "Four", "Five" }
R: Tlist: { "Two", "Three" }
R: empty_list: { }
R: datalist: [1,2,3,"Tab","chive"]
R: data_Tlist: { "Tab" }
R: data_empty_list: { }
History: The collecting function behavior was added in 3.9.
See also: About collecting functions, filter()
, every()
, some()
, and none()
.