len

Returns the length of a string.

Be aware that the length represents the number of bytes and not the number of characters. see example below.

This function does not generate a change.

str.len()

None

Returns length of the string.

This code uses len() to return the length of a string:

[
    {'Hello'.len();  /* 5 bytes */ },
    {'π'.len();      /* 2 bytes, not 1 */ },
]

Return value in JSON format