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def parse_url(url)
  matches = url.match(/\/([\d]{10})/)
  return nil unless matches
...

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def encode
    self[:code] = self[:code].gsub(/\&/, "&amp;").gsub(/\</, "&lt;").gsub(/\>/, "&gt;")
end

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<?php
function get_title($html_page)
{
...

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def space_out_camel_case(stringAsCamelCase):
    """Adds spaces to a camel case string.  Failure to space out string returns the original string.
    >>> space_out_camel_case('DMLSServicesOtherBSTextLLC')
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  List<Document> documents = documentLayer.GetDocuments(username);
  List<Document> filteredDocuments = new List<Document>();

...

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/^(?:(\d)[ \-\.]?)?(?:\(?(\d{3})\)?[ \-\.])?(\d{3})[ \-\.](\d{4})(?: ?x?(\d+))?$/

# expanded version w/ comments
...