Re^2: decimal to binary

Thank you grandfather for the tips. You have used some keywords unknown to me but are self explainable. But I didn't understand the logic for converting decimals greater than 256. I just started the Perl for beginners ..

Comment on Re^2: decimal to binary

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Re^3: decimal to binary by GrandFather (Saint) on Jan 09, 2012 at 09:39 UTC
The key is `$dec >>= 1;` which shifts $dec one bit right - that is, it moves all the bits one position down and the previous least significant bit "drops off the end". A 0 bit is shifted in as the most significant bit so eventually all the one bits have been shifted out and the while loop ends. The `\|\| !@bits` makes sure that there is at least one bit in @bits by executing the loop once when $dec is 0. I'd guess join and maybe push are new to you. I've provided links to documentation for them. True laziness is hard work	[reply] [d/l] [select]

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Re^3: decimal to binary
by GrandFather (Saint) on Jan 09, 2012 at 09:39 UTC

The key is $dec >>= 1; which shifts $dec one bit right - that is, it moves all the bits one position down and the previous least significant bit "drops off the end". A 0 bit is shifted in as the most significant bit so eventually all the one bits have been shifted out and the while loop ends.

The || !@bits makes sure that there is at least one bit in @bits by executing the loop once when $dec is 0.

I'd guess join and maybe push are new to you. I've provided links to documentation for them.

True laziness is hard work

[reply]
[d/l]
[select]