[angvelem]

1. Читай:

PosEx function

Returns the index value of a substring.

Unit

StrUtils

Category

string handling routines

Delphi syntax:

function PosEx(const SubStr, S: string; Offset: Cardinal = 1): Integer;

C++ syntax:

extern PACKAGE int __fastcall PosEx(const AnsiString SubStr, const AnsiString S, unsigned Offset = 1);

Description

PosEx returns the index of SubStr in S, beginning the search at Offset. If Offset is 1 (default), PosEx is equivalent to Pos.

PosEx returns 0 if SubStr is not found, if Offset is greater than the length of S, or if Offset is less than 1.

Copy function

Returns a substring of a string or a segment of a dynamic array.

Unit

System

Category

string handling routines

Delphi syntax:

function Copy(S; Index, Count: Integer): string;
function Copy(S; Index, Count: Integer): array;

Description

S is an expression of a string or dynamic-array type. Index and Count are integer-type expressions. Copy returns a substring or subarray containing Count characters or elements starting at S[Index]. The substring or subarray is a unique copy (that is, it does not share memory with S, although if the elements of the array are pointers or objects, these are not copied as well.)

If Index is larger than the length of S, Copy returns an empty string or array.

If Count specifies more characters or array elements than are available, only the characters or elements from S[Index] to the end of S are returned.

Note: When S is a dynamic array, you can omit the Index and Count parameters and Copy copies the entire array.

2. Не заморачивался, справка должна идти в комплекте, но можно выложить куда-нибудь.