basic_static_string::operator+= (2 of 5 overloads)

Append to the string.

constexpr basic_static_string&
operator+=(
    value_type ch);

Appends a character to the end of the string.

Strong guarantee.

Name	Description
`ch`	The character to append.

Type	Thrown On
`std::length_error`	`size() >= max_size()`