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Asked: 2026-05-23T21:00:16+00:00

I know the << is a bit operation. but I do not understand what

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I know the “<<” is a bit operation. but I do not understand what it exactly functions in TCL, and when should we use it?

can anyone help me on this?

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  1. Editorial Team

    There are a number of uses for the << shift left operator. Some that come to my mind are :

    • Bit by bit processing. Shift a number and observe highest order bit etc. It comes in more handy than you might think.
    • If you add a zero to a number in the decimal number system you effectively multiply it by 10. shifting bits effectively means multiplying by 2. This actually translated into a low level assembly command of bit shifting which has lower compute cycles than multiplication by 2. This is used for efficiency in the gaming industry. Shift if twice (<< 2) to multiply it by 4 and so on.

    I am sure there are many others.

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