Locates the position of a substring in a main string.
AT( <cSearch>, <cString>, [<nStart>], [<nEnd>] ) --> nPos
<cSearch> Substring to search for
<cString> Main string
<nStart> First position to search in cString, by default 1
<nEnd> End position to search, by default cString length
AT() return the starting position of the first occurrence of the substring in the main string
This function searches the string <cString> for the characters in the first string <cSearch>. If the substring is not contained within the second expression, the function will return 0. The third and fourth parameters lets you indicate a starting and end offset to search in.
? 'At( "cde", "abcdefgfedcba" ) = ' +; At( "cde", "abcsefgfedcba" )
This function is sensitive to HB_CLP_STRICT settings during the compilation of src/rtl/at.c
<nStart> and <nEnd> are Harbour extensions and do not exist if HB_CLP_STRICT is defined. In that case, the whole string is searched.
Library is rtl