Writes the character of charCode
.
This method is equivalent to write(new String.fromCharCode(charCode))
.
This operation is non-blocking. See flush or done for how to get any errors generated by this call.
void writeCharCode(int charCode);
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-io/IOSink/writeCharCode.html