One line if statement not working

Question

lt  if  item rigged   gt Yes lt  else  gt No lt  end  gt    I was thinking of something like this   if  item rigged    Yes     No     But it doesn t work  Ruby has the     but I m not even sure how to use that thing

User · Answer

if else condition can be covered with ternary operator    item rigged     Yes     No

User · Answer

One line if    lt statement gt  if  lt condition gt    Your case    Yes  if  item rigged   No  if   item rigged   or   No  unless  item rigged

User · Answer

For simplicity  If you need to default to some value if nil you can use    something nil     No      Yes

User · Answer

Both the shell and C one-line constructs work  ruby 1 9 3p429      Shell format irb main  022 0 gt  true  amp  amp   Yes      No    gt   Yes  irb main  023 0 gt  false  amp  amp   Yes      No    gt   No     C format irb main  024 0 gt  true    Yes     No    gt   Yes  irb main  025 0 gt  false    Yes     No    gt   No

User · Answer

Remove if from if  item rigged    Yes     No     Ternary operator has form condition   if true   if false

User · Answer

You can Use ----    item rigged     Yes     No   If  item rigged is true  it will return  Yes  else it will return  No

User · Answer

In Ruby  the condition and the then part of an if expression must be separated by either an expression separator  i e    or a newline  or the then keyword   So  all of these would work   if  item rigged then  Yes  else  No  end  if  item rigged   Yes  else  No  end  if  item rigged    Yes  else  No  end   There is also a conditional operator in Ruby  but that is completely unnecessary  The conditional operator is needed in C  because it is an operator  in C  if is a statement and thus cannot return a value  so if you want to return a value  you need to use something which can return a value  And the only things in C that can return a value are functions and operators  and since it is impossible to make if a function in C  you need an operator   In Ruby  however  if is an expression  In fact  everything is an expression in Ruby  so it already can return a value  There is no need for the conditional operator to even exist  let alone use it   BTW  it is customary to name methods which are used to ask a question with a question mark at the end  like this    item rigged    This shows another problem with using the conditional operator in Ruby    item rigged     Yes     No    It s simply hard to read with the multiple question marks that close to each other

User · Answer

From what I know  3 one-liners   a   10 if  lt condition gt    example    a   10 if true   a   10 b   10 if false   b   nil    a   10 unless  lt condition gt    example   a   10 unless false   a   10 b   10 unless true   b   nil    a    lt condition gt     lt a gt     lt b gt    example   a   true   10   100   a   10 a   false   10   100   a   100   I hope it helps

[ruby] One line if statement not working

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