CRxString::npos Static Variable

static constexpr size_t npos

npos is a static member constant value with the greatest possible value for an element of type size_t.

This value, when used as the value for a length parameter in string's member functions, means "until the end of the string".

As a return value, it is usually used to indicate no matches.

This constant is defined with a value of -1, which because size_t is an unsigned integral type, it is the largest possible representable value for this type.