[ruby-core:94255] [Ruby master Misc#16096] each in each (multiple uses 'each')

[ruby-core:94255] [Ruby master Misc#16096] each in each (multiple uses 'each')

[FreeKMan]

Issue #16096 has been reported by D1mon (Dim F).

----------------------------------------
Misc #16096: each in each (multiple uses 'each')
https://bugs.ruby-lang.org/issues/16096

* Author: D1mon (Dim F)
* Status: Open
* Priority: Normal
* Assignee: 
----------------------------------------
``` ruby
obj.each {|a|
    a.some_method1.each {|b|
        ... # comes here (enter)
    }
    a.some_method2.each {|c|
        ... # does not enter here
    }
}

# tried and that way. also does not go
for a in obj
    for b in a.some_method1
        ... # comes here
    end
    for c in a.some_method2
        ... # does not enter here
    end
end
```

help solve the problem. I’ve been suffering for 2 days.




-- 
https://bugs.ruby-lang.org/

[ruby-core:94257] [Ruby master Misc#16096] each in each (multiple uses 'each')

[merch-redmine]

Issue #16096 has been updated by jeremyevans0 (Jeremy Evans).

Status changed from Open to Feedback

Can you explain what you are trying to do, and provide a self-contained example?  It is not clear from the description or the code what you think the problem is.  I can only guess that the object returned by `a.some_method2` has an `each` method that does not yield when called.

----------------------------------------
Misc #16096: each in each (multiple uses 'each')
https://bugs.ruby-lang.org/issues/16096#change-80572

* Author: D1mon (Dim F)
* Status: Feedback
* Priority: Normal
* Assignee: 
----------------------------------------
``` ruby
obj.each {|a|
    a.some_method1.each {|b|
        ... # comes here (enter)
    }
    a.some_method2.each {|c|
        ... # does not enter here
    }
}

# tried and that way. also does not go
for a in obj
    for b in a.some_method1
        ... # comes here
    end
    for c in a.some_method2
        ... # does not enter here
    end
end
```

help solve the problem. I’ve been suffering for 2 days.




-- 
https://bugs.ruby-lang.org/

[ruby-core:94258] [Ruby master Misc#16096] each in each (multiple uses 'each')

[shevegen]

Issue #16096 has been updated by shevegen (Robert A. Heiler).


In ruby it is in general very rare that deeply nested (and multiple) .each
are necessary.

I recommend to you to use "pp" before you run the loop, such as:

    pp obj

Perhaps you have an empty Array there - that happens to me sometimes 
where I would otherwise get confused why .each is not running.

This is also why I love pp. :)

As Jeremy wrote, it is very likely to assume that something is
not quite right with .each for the object; or it is empty.

----------------------------------------
Misc #16096: each in each (multiple uses 'each')
https://bugs.ruby-lang.org/issues/16096#change-80573

* Author: D1mon (Dim F)
* Status: Feedback
* Priority: Normal
* Assignee: 
----------------------------------------
``` ruby
obj.each {|a|
    a.some_method1.each {|b|
        ... # comes here (enter)
    }
    a.some_method2.each {|c|
        ... # does not enter here
    }
}

# tried and that way. also does not go
for a in obj
    for b in a.some_method1
        ... # comes here
    end
    for c in a.some_method2
        ... # does not enter here
    end
end
```

help solve the problem. I’ve been suffering for 2 days.




-- 
https://bugs.ruby-lang.org/

[ruby-core:94260] [Ruby master Misc#16096] each in each (multiple uses 'each')

[FreeKMan]

Issue #16096 has been updated by D1mon (Dim F).


**selenium**
``` ruby
for el in driver.find_elements(xpath: <some_xpath>)
  for e1 in el.find_elements(xpath: ...)
    ...
  end
  for e2 in el.find_elements(xpath: ...)
    ...
  end
end
```

I need to do two searches in one pass


----------------------------------------
Misc #16096: each in each (multiple uses 'each')
https://bugs.ruby-lang.org/issues/16096#change-80575

* Author: D1mon (Dim F)
* Status: Feedback
* Priority: Normal
* Assignee: 
----------------------------------------
``` ruby
obj.each {|a|
    a.some_method1.each {|b|
        ... # comes here (enter)
    }
    a.some_method2.each {|c|
        ... # does not enter here
    }
}

# tried and that way. also does not go
for a in obj
    for b in a.some_method1
        ... # comes here
    end
    for c in a.some_method2
        ... # does not enter here
    end
end
```

help solve the problem. I’ve been suffering for 2 days.




-- 
https://bugs.ruby-lang.org/

[ruby-core:94262] [Ruby master Misc#16096] each in each (multiple uses 'each')

[merch-redmine]

Issue #16096 has been updated by jeremyevans0 (Jeremy Evans).

Status changed from Feedback to Rejected

D1mon (Dim F) wrote:
> **selenium**
> ``` ruby
> for el in driver.find_elements(xpath: <some_xpath>)
>   for e1 in el.find_elements(xpath: ...)
>     ...
>   end
>   for e2 in el.find_elements(xpath: ...)
>     ...
>   end
> end
> ```
> 
> I need to do two searches in one pass

You probably want something like:

```ruby
driver.find_elements(xpath: "...").each do |el|
  (el.find_elements(xpath: "...").to_a + el.find_elements(xpath: "...").to_a).each do |e1|
    # ...
  end
end
```

Alternatively, you need an xpath expression that matches both elements you want to select (not sure if that is possible).

As this is not a bug report, I'm going to close this.

----------------------------------------
Misc #16096: each in each (multiple uses 'each')
https://bugs.ruby-lang.org/issues/16096#change-80577

* Author: D1mon (Dim F)
* Status: Rejected
* Priority: Normal
* Assignee: 
----------------------------------------
``` ruby
obj.each {|a|
    a.some_method1.each {|b|
        ... # comes here (enter)
    }
    a.some_method2.each {|c|
        ... # does not enter here
    }
}

# tried and that way. also does not go
for a in obj
    for b in a.some_method1
        ... # comes here
    end
    for c in a.some_method2
        ... # does not enter here
    end
end
```

help solve the problem. I’ve been suffering for 2 days.




-- 
https://bugs.ruby-lang.org/

[ruby-core:94272] [Ruby master Misc#16096] each in each (multiple uses 'each')

[FreeKMan]

Issue #16096 has been updated by D1mon (Dim F).


this method is not suitable since the 3rd search (find_elements) is also used.
Are you saying this is a bug? you can do issue?

----------------------------------------
Misc #16096: each in each (multiple uses 'each')
https://bugs.ruby-lang.org/issues/16096#change-80595

* Author: D1mon (Dim F)
* Status: Rejected
* Priority: Normal
* Assignee: 
----------------------------------------
``` ruby
obj.each {|a|
    a.some_method1.each {|b|
        ... # comes here (enter)
    }
    a.some_method2.each {|c|
        ... # does not enter here
    }
}

# tried and that way. also does not go
for a in obj
    for b in a.some_method1
        ... # comes here
    end
    for c in a.some_method2
        ... # does not enter here
    end
end
```

help solve the problem. I’ve been suffering for 2 days.




-- 
https://bugs.ruby-lang.org/

[ruby-core:94280] Re: [Ruby master Misc#16096] each in each (multiple uses 'each')

[John W Higgins]

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There is no issue here at all.

a = [[1, 2, ,3, 4, 5]]

a.each do |x\
  x.each do |y|
    pp y
  end
  x.each do |z|
    pp z
  end
  pp x
end

Works perfectly fine. Are you certain your second for actually has any
items to iterate? Remove the first embedded each loop and make sure they
both work independent of each other before assuming the nesting in the
issue.

John

On Sat, Aug 10, 2019 at 2:43 PM <FreeKMan@protonmail.com> wrote:

> Issue #16096 has been reported by D1mon (Dim F).
>
> ----------------------------------------
> Misc #16096: each in each (multiple uses 'each')
> https://bugs.ruby-lang.org/issues/16096
>
> * Author: D1mon (Dim F)
> * Status: Open
> * Priority: Normal
> * Assignee:
> ----------------------------------------
> ``` ruby
> obj.each {|a|
>     a.some_method1.each {|b|
>         ... # comes here (enter)
>     }
>     a.some_method2.each {|c|
>         ... # does not enter here
>     }
> }
>
> # tried and that way. also does not go
> for a in obj
>     for b in a.some_method1
>         ... # comes here
>     end
>     for c in a.some_method2
>         ... # does not enter here
>     end
> end
> ```
>
> help solve the problem. I’ve been suffering for 2 days.
>
>
>
>
> --
> https://bugs.ruby-lang.org/
>
> Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>
>

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