read - alloc

Traits

FromEndianBytes Trait for types that can be converted from a fixed-size byte array with a specified endianness
Read The Read trait allows for reading bytes from a source.

append_to_string Several read_to_string and read_line methods in the standard library will append data into a String buffer, but we need to be pretty careful when doing this. The implementation will just call .as_mut_vec() and then delegate to a byte-oriented reading method, but we must ensure that when returning we never leave buf in a state such that it contains invalid UTF-8 in its bounds.
default_read_buf
default_read_buf_exact
default_read_exact
default_read_to_end Here we must serve many masters with conflicting goals:
default_read_to_string
default_read_vectored
read_to_string Reads all bytes from a [reader][Read] into a new String.

DEFAULT_BUF_SIZE Bare metal platforms usually have very small amounts of RAM (in the order of hundreds of KB)