Description Usage Arguments Value Author(s)
Why? grep normally tries to find a pattern in a vector of values; what if you have a list of vectors, and want to know in which vector does your value appear??
| 1 | 
| pattern | a character(1) | 
| x | a list, usually where each element is a character vector. | 
| ... | arguments passed to  | 
returns the index into the list that contains your pattern.
Mark Cowley, 2009-10-16
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.