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# bad options

    Code
      prep(rec3, training = covers)
    Condition
      Error in `step_bin2factor()`:
      Caused by error in `prep()`:
      ! All columns selected for the step should be double, integer, or logical.

---

    Code
      rec %>% step_bin2factor(rocks, levels = letters[1:5])
    Condition
      Error in `step_bin2factor()`:
      ! `levels` should be a two element character string

---

    Code
      rec %>% step_bin2factor(rocks, levels = 1:2)
    Condition
      Error in `step_bin2factor()`:
      ! `levels` should be a two element character string

# printing

    Code
      print(rec2)
    Output
      Recipe
      
      Inputs:
      
            role #variables
       predictor          1
      
      Operations:
      
      Regular expression dummy variable using "(rock|stony)"
      Regular expression dummy variable using "(rock|stony)"
      Dummy variable to factor conversion for rocks

---

    Code
      prep(rec2)
    Output
      Recipe
      
      Inputs:
      
            role #variables
       predictor          1
      
      Training data contained 40 data points and no missing data.
      
      Operations:
      
      Regular expression dummy variable using "(rock|stony)" [trained]
      Regular expression dummy variable using "(rock|stony)" [trained]
      Dummy variable to factor conversion for rocks [trained]

# empty printing

    Code
      rec
    Output
      Recipe
      
      Inputs:
      
            role #variables
         outcome          1
       predictor         10
      
      Operations:
      
      Dummy variable to factor conversion for <none>

---

    Code
      rec
    Output
      Recipe
      
      Inputs:
      
            role #variables
         outcome          1
       predictor         10
      
      Training data contained 32 data points and no missing data.
      
      Operations:
      
      Dummy variable to factor conversion for <none> [trained]

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