strings.concat
strings.concat(a, b, c, ...)
Description
Returns the concatenation of an unlimited number of items, each of which can be a string, integer, or float.
If any arguments are event fields, the attributes must be from the same event.
Param data types
STRING, FLOAT, INT
Return type
STRING
Code samples
Example 1
The following example includes a string variable and integer variable as
arguments. Both principal.hostname and principal.port are from the same
event, $e, and are concatenated to return a string.
"google:80" = strings.concat($e.principal.hostname, ":", $e.principal.port)
Example 2
The following example includes a string variable and string literal as arguments.
"google-test" = strings.concat($e.principal.hostname, "-test") // Matches the event when $e.principal.hostname = "google"
Example 3
The following example includes a string variable and float literal as arguments. When represented as strings, floats that are whole numbers are formatted without the decimal point (for example, 1.0 is represented as "1"). Additionally, floats that exceed sixteen decimal digits are truncated to the sixteenth decimal place.
"google2.5" = strings.concat($e.principal.hostname, 2.5)
Example 4
The following example includes a string variable, string literal,
integer variable, and float literal as arguments. All variables are from the
same event, $e, and are concatenated with the literals to return a string.
"google-test802.5" = strings.concat($e.principal.hostname, "-test", $e.principal.port, 2.5)
Example 5
The following example attempts to concatenate principal.port from event $e1,
with principal.hostname from event $e2. It will return a compiler error
because the arguments are different event variables.
// Will not compile
"test" = strings.concat($e1.principal.port, $e2.principal.hostname)