What is the difference between print and puts

Question

For example in this line of code I wrote  print and puts produce different results   1 upto 1000  each    i  print i if i   2    0

User · Answer

A big difference is if you are displaying arrays. Especially ones with NIL. For example:

print [nil, 1, 2]

gives

[nil, 1, 2]

but

puts [nil, 1, 2]

gives

1
2

Note, no appearing nil item (just a blank line) and each item on a different line.

User · Answer

print outputs each argument  followed by     to  stdout  followed by     It is equivalent to args join           puts sets both    and    to   n  and then does the same thing as print  The key difference being that each argument is a new line with puts   You can require  english  to access those global variables with user-friendly names

User · Answer

puts call the to s of each argument and adds a new line to each string  if it does not end with new line  print just output each argument by calling their to s   for example  puts  one two    one two   new line   puts  one two n   one two   new line   puts will not add a new line to the result  since the string ends with a new line  print  one two   one two  print  one two n   one two   new line   And there is another way to output  p     For each object  directly writes obj inspect followed by a newline to the program   s standard output    It is helpful to output debugging message  p  aa n t   aa n t

User · Answer

If you would like to output array within string using puts  you will get the same result as if you were using print   puts     0  1  nil      0  1  nil    But if not withing a quoted string then yes  The only difference is between new line when we use puts

User · Answer

puts adds a new line to the end of each argument if there is not one already    print does not add a new line     For example   puts   1 2 3    4 5 nil   Would return    1 2 3 4 5   Whereas print   1 2 3    4 5 nil   would return     1 2 3    4 5 nil    Notice how puts does not output the nil value whereas print does

User · Answer

The API docs give some good hints      print     nil      print obj         nil      Writes the given object s  to ios  Returns nil       The stream must be opened for writing  Each given object that isn t a   string will be converted by calling its to s method  When   called without arguments  prints the contents of          If the output field separator      is not nil  it   is inserted between objects  If the output record separator        is not nil  it is appended to the output                puts obj         nil      Writes the given object s  to ios  Writes a newline after any that   do not already end with a newline sequence  Returns nil       The stream must be opened for writing  If called with an array argument    writes each element on a new line  Each given object that isn t a   string or array will be converted by calling its to s method    If called without arguments  outputs a single newline    Experimenting a little with the points given above  the differences seem to be      Called with multiple arguments  print separates them by the  output field separator      which defaults to nothing  while puts separates them by newlines  puts also puts a newline after the final argument  while print does not   2 1 3  001   print  hello    world  helloworld    nil  2 1 3  002   puts  hello    world  hello world     nil 2 1 3  003         fanodd       fanodd   2 1 3  004   print  hello    world  hellofanoddworld    nil  2 1 3  005   puts  hello    world  hello world     nil puts automatically unpacks arrays  while print does not   2 1 3  001   print  1   2  3     4   1   2  3   4     nil  2 1 3  002   puts  1   2  3     4  1 2 3 4     nil print with no arguments prints     the last thing read by gets   while puts prints a newline   2 1 3  001   gets hello world      hello world n   2 1 3  002   puts      nil  2 1 3  003   print hello world     nil print writes the output record separator    after whatever it prints  while puts ignores this variable   mark lunchbox    irb 2 1 3  001         MOOOOOOO        MOOOOOOO    2 1 3  002   puts  Oink  Baa  Cluck    Oink  Baa  Cluck       nil  2 1 3  003   print  Oink  Baa  Cluck    Oink  Baa  Cluck  MOOOOOOO     nil

[ruby] What is the difference between print and puts?

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