BUILT-IN MATHEMATICA SYMBOL

StringPosition

StringPosition["string", "sub"]
gives a list of the starting and ending character positions at which appears as a substring of .

StringPosition["string", patt]
gives all positions at which substrings matching the general string expression patt appear in .

StringPosition["string", patt, n]
includes only the first n occurrences of patt.

StringPosition["string", {patt₁, patt₂, ...}]
gives positions of all the .

StringPosition[{s₁, s₂, ...}, p]
gives the list of results for each of the .

Details and Options Details and Options

The string expression patt can contain any of the objects specified in the notes for StringExpression.
With the default option setting Overlaps->True, StringPosition includes substrings that overlap. With the setting Overlaps->False, such substrings are excluded. »
With Overlaps->All, multiple substrings that match the same string expression are all included. With Overlaps->True, only the first such matching substring at a given position is included. »
Setting the option IgnoreCase->True makes StringPosition treat lowercase and uppercase letters as equivalent. »
StringPosition returns sequence specifications in the form used by StringTake, StringDrop, and StringReplacePart. »
StringPosition["string", RegularExpression["regex"]] gives positions of substrings matching the specified regular expression.