readByteSync method

int readByteSync()

Synchronously read a byte from stdin. This call will block until a byte is available.

If at end of file, -1 is returned.

Source

external int readByteSync();

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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-io/Stdin/readByteSync.html