Comments on: Reading a single keystroke with C++ on Linux http://www.doctort.org/adam/nerd-notes/reading-single-keystroke-on-linux.html Maker of Finest Quality Digital Things Wed, 28 Jul 2010 13:58:37 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: adam http://www.doctort.org/adam/nerd-notes/reading-single-keystroke-on-linux.html/comment-page-1#comment-14359 adam Fri, 28 Aug 2009 21:08:35 +0000 http://www.doctort.org/adam/?p=309#comment-14359 It is a boolean operation to remove the ICANON flag from t.c_lflag. The ~ operator performs a bitwise negation operation - effectively turning on all bits except ICANON. The &= operator performs a logical AND of that with the c_lflag member and puts the result back into c_lflag. It can be read as t.c_lflag AND EQUALS NOT ICANON. See this Wikipedia page for more information about C and C++ operators: http://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B It is a boolean operation to remove the ICANON flag from t.c_lflag. The ~ operator performs a bitwise negation operation – effectively turning on all bits except ICANON. The &= operator performs a logical AND of that with the c_lflag member and puts the result back into c_lflag.

It can be read as t.c_lflag AND EQUALS NOT ICANON.

See this Wikipedia page for more information about C and C++ operators:

http://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B

]]> By: Prashant http://www.doctort.org/adam/nerd-notes/reading-single-keystroke-on-linux.html/comment-page-1#comment-14358 Prashant Fri, 28 Aug 2009 14:29:41 +0000 http://www.doctort.org/adam/?p=309#comment-14358 can you explain the line ?please.. t.c_lflag &= ~ICANON can you explain the line ?please..
t.c_lflag &= ~ICANON

]]> By: David http://www.doctort.org/adam/nerd-notes/reading-single-keystroke-on-linux.html/comment-page-1#comment-14337 David Wed, 22 Jul 2009 23:32:28 +0000 http://www.doctort.org/adam/?p=309#comment-14337 Ingenious! I never would have thought the problem came from the operating system for the keyboard. I would give you applause if you could hear it. Ingenious! I never would have thought the problem came from the operating system for the keyboard. I would give you applause if you could hear it.

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