Returns the length of the value.

The length of a list is the number of elements in the list, the length of a binary is the number of bytes in the binary.

For example:

{{ value|length }}

When value is the list “hello” then the output will be β€œ5”.

Note: With multi-byte values this function does not return the
number of characters, it returns the number of bytes. This may change in a future release.