1# Table of contents 2 3| File | Purpose | 4|--------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------| 5| [aav.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/aav.d) | An associative array implementation | 6| [array.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/array.d) | A dynamic array implementation | 7| [bitarray.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/bitarray.d) | A compact array of bits | 8| [ctfloat.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/ctfloat.d) | A floating point type for compile-time calculations | 9| [file.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/file.d) | Read a file from disk and store it in memory | 10| [filename.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/filename.d) | Encapsulate path and file names | 11| [hash.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/hash.d) | Calculate a hash for a byte array | 12| [longdouble.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/longdouble.d) | 80-bit floating point number implementation in case they are not natively supported | 13| [man.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/man.d) | Opens an online manual page | 14| [outbuffer.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/outbuffer.d) | An expandable buffer in which you can write text or binary data. | 15| [port.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/port.d) | Portable routines for functions that have different implementations on different platforms | 16| [region.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/region.d) | A region allocator | 17| [response.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/response.d) | Parse command line arguments from response files | 18| [rmem.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/rmem.d) | Allocate memory using `malloc` or the GC depending on the configuration | 19| [rootobject.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/rootobject.d) | A root object that classes in dmd inherit from | 20| [speller.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/speller.d) | Try to detect typos in identifiers | 21| [string.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/string.d) | Various string related functions | 22| [stringtable.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/stringtable.d) | Specialized associative array with string keys stored in a variable length structure | 23| [strtold.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/strtold.d) | D implementation of the standard C function `strtold` (String to long double) | 24