Converting an integer to a hexadecimal string in Ruby

Question

Is there a built in way to convert an integer in Ruby into its hexadecimal equivalent   Something like the opposite of String to i    0A  to i 16     gt 10   Like perhaps    0A  hex    gt 10   I know how to roll my own  but it s probably more efficient to use a built in Ruby function

User · Answer

How about using   sprintf   i   20   x    i     gt   14

User · Answer

How about using   sprintf   i   20   x    i     gt   14

User · Answer

You can give to s a base other than 10   10 to s 16      gt   a    Note that in ruby 2 4 FixNum and BigNum were unified in the Integer class   If you are using an older ruby check the documentation of FixNum to s and  BigNum to s

User · Answer

Just in case you have a preference for how negative numbers are formatted   p   x    -1      gt     f  p -1 to s 16     gt   -1

User · Answer

Here s another approach   sprintf   02x   10  upcase   see the documentation for sprintf here  http   www ruby-doc org core classes Kernel html method-i-sprintf

User · Answer

Here s another approach   sprintf   02x   10  upcase   see the documentation for sprintf here  http   www ruby-doc org core classes Kernel html method-i-sprintf

User · Answer

You can give to s a base other than 10   10 to s 16      gt   a    Note that in ruby 2 4 FixNum and BigNum were unified in the Integer class   If you are using an older ruby check the documentation of FixNum to s and  BigNum to s

User · Answer

How about using   sprintf   i   20   x    i     gt   14

User · Answer

You can give to s a base other than 10   10 to s 16      gt   a    Note that in ruby 2 4 FixNum and BigNum were unified in the Integer class   If you are using an older ruby check the documentation of FixNum to s and  BigNum to s

User · Answer

To summarize   p 10 to s 16     gt   a  p   x    10    gt   a  p   02X    10    gt   0A  p sprintf   02X   10     gt   0A  p    02X 02X 02X     255  0  10     gt    FF000A

User · Answer

How about using   sprintf   i   20   x    i     gt   14

User · Answer

Just in case you have a preference for how negative numbers are formatted   p   x    -1      gt     f  p -1 to s 16     gt   -1

User · Answer

You can give to s a base other than 10   10 to s 16      gt   a    Note that in ruby 2 4 FixNum and BigNum were unified in the Integer class   If you are using an older ruby check the documentation of FixNum to s and  BigNum to s

User · Answer

You can give to s a base other than 10   10 to s 16      gt   a    Note that in ruby 2 4 FixNum and BigNum were unified in the Integer class   If you are using an older ruby check the documentation of FixNum to s and  BigNum to s

User · Answer

To summarize   p 10 to s 16     gt   a  p   x    10    gt   a  p   02X    10    gt   0A  p sprintf   02X   10     gt   0A  p    02X 02X 02X     255  0  10     gt    FF000A

User · Answer

Here s another approach   sprintf   02x   10  upcase   see the documentation for sprintf here  http   www ruby-doc org core classes Kernel html method-i-sprintf

User · Answer

You can give to s a base other than 10   10 to s 16      gt   a    Note that in ruby 2 4 FixNum and BigNum were unified in the Integer class   If you are using an older ruby check the documentation of FixNum to s and  BigNum to s

User · Answer

You can give to s a base other than 10   10 to s 16      gt   a    Note that in ruby 2 4 FixNum and BigNum were unified in the Integer class   If you are using an older ruby check the documentation of FixNum to s and  BigNum to s

User · Answer

To summarize   p 10 to s 16     gt   a  p   x    10    gt   a  p   02X    10    gt   0A  p sprintf   02X   10     gt   0A  p    02X 02X 02X     255  0  10     gt    FF000A

User · Answer

How about using   sprintf   i   20   x    i     gt   14

User · Answer

Here s another approach   sprintf   02x   10  upcase   see the documentation for sprintf here  http   www ruby-doc org core classes Kernel html method-i-sprintf

User · Answer

How about using   sprintf   i   20   x    i     gt   14

User · Answer

How about using   sprintf   i   20   x    i     gt   14

User · Answer

Just in case you have a preference for how negative numbers are formatted   p   x    -1      gt     f  p -1 to s 16     gt   -1

User · Answer

Just in case you have a preference for how negative numbers are formatted   p   x    -1      gt     f  p -1 to s 16     gt   -1

User · Answer

To summarize   p 10 to s 16     gt   a  p   x    10    gt   a  p   02X    10    gt   0A  p sprintf   02X   10     gt   0A  p    02X 02X 02X     255  0  10     gt    FF000A

User · Answer

You can give to s a base other than 10   10 to s 16      gt   a    Note that in ruby 2 4 FixNum and BigNum were unified in the Integer class   If you are using an older ruby check the documentation of FixNum to s and  BigNum to s

User · Answer

How about using   sprintf   i   20   x    i     gt   14

[ruby] Converting an integer to a hexadecimal string in Ruby

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