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Firebird is used by approximately 1 million of software developers worldwide. High compatibility with industry standards on many fronts makes Firebird the obvious choice for developing interoperable applications for homogeneous and hybrid environments.
Coding Style
The project follows the coding conventions commonly accepted by the C++ development community rather than inventing its own rules, although some deviations are allowed to achieve a wider level of comfort for the involved developers.

Please refer to the C++ Programming Style Guidelines as the basic conventions used by the project. The major differences from the aforementioned conventions are listed underneath.

#7. Namespaces are mixed case and start with upper case, e.g. Firebird, Jrd, etc.

#10. Global variables may be referred to without the :: prefix. From another side, usage of globals is highly limited.

#11. Private data members could be used without any prefix/suffix, although the "m_" prefix is recommended.

#23. Not commonly used, instead the variable name may contain the words "number" or "count".

#36. Trivial method implementations are allowed inline. It could also be done for performance-critical methods.

#37. The line length limit is extended to 100 columns.

#38. Tabs are allowed and must be used for indentation.

#41. System headers can be included after the project ones.

#53. Explicit tests for numeric zeros are not enforced, although recommended.

#58. Break statements are allowed inside the loops.

#61. Temporary boolean variables are used for over-complicated conditions only.

#70. Both "0" and "NULL" are allowed for pointers.

#71. Basic indentation is one tab (usually set up as four spaces).

#72. The first option (opening brace is in the same line) must not be used if the condition exceeds one line.

#85. Spaces are not allowed between the routine name and parenthesis.

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