Free pascal 2.7.15/26/2023 They are reference counted and are guaranteed to be null terminated. FPC Single-byte String types documentationĪnsistrings are strings that have no length limit.A short string of 255 characters uses 256 bytes of memory (one byte for the length specification and 255 bytes for characters). The length is stored in the character at index 0. Short strings have a maximum length of 255 characters with the implicit codepage CP_ACP. Reference for unit 'strutils': Procedures and functions.In mode delphiunicode' String is UnicodeString. The type String may refer to ShortString or AnsiString, depending from the ) string without length specifier will define an AnsiString, otherwise a ShortString with specified length. in interaction with certain OS libraries or third-party software.Ī variable of type PWideChar is a pointer to a WideChar variable. PChars can be used to access C-style null-terminated strings, e.g. ) PCharĪ variable of type PChar is basically a pointer to a Char type, but allows additional operations. Note: Unassigned chars in dynamic arrays have a content #0, cause empty positions of all dynamic arrays are initially initialised with 0 (or #0, or nil, or. It is, however, still supported to ensure backward-compatibility with ancient code. This approach has many disadvantages and is no longer recommended. The only possibility to store strings in variables was the use of arrays of char. ![]() ![]() Therefore, 2 WideChars may be needed to encode a single code point.Įarly Pascal implementations that were in use before 1978 did not support a string type (with the exception of string constants). ![]() Note: it is impossible to encode all Unicode code points in 2 bytes.
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