... file,¹

See code/install/codedevl/template-class-h

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... file,²

See code/install/codedevl/template-class-cc. Neither totally inlined classes, nor abstract base classes may need an implementation file.

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... program³

See code/install/codedevl/template-main-cc

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... classes⁴

A good example is a read-only class, and a read-write class derived from it.

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... files.⁵

If you do this, make sure that the documentation sections - synopsis, etymology, motivation, etc. - are completed for every class contained in the file.

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... file.⁶

Special language tools can measure coverage. See AIPS++ Note 170, ``The AIPS++ Code Review Process'' for suggestions on writing test programs.

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... declarations⁷

Explicitly or implicitly like in iosfwd or Complexfwd

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... types⁸

Char, uChar, Int, uInt, Float, Double, lDouble, Complex, DComplex, String. In special circumstances the use of Long and uLong is allowed.

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... directory.⁹

See code/install/codedevl/template-module-h. The Tables module, code/aips/implement/Tables is a good example to study.

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... used.¹⁰

As a rule, it is advisable for application programmers to include in their code the include files for the individual classes being used.

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... file¹¹

See code/install/codedevl/template-module-h

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... management.¹²

reident, unused, duplicates programs

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... updated.¹³

See, for instance, the documentation tags reviewed and todo in template-class-h.

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... suffice.¹⁴

This may sometimes involve the use of special forwarding include files like iosfwd.

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... it.¹⁵

Or declare the references and pointers const - but be aware of threading problems in that case

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... constructor¹⁶

Note that this is only created when no user constructor at all present

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... destructor¹⁷

always supply a virtual destructor in a base class

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... last.¹⁸

This order may seem unnatural, but it is a direct consequence of the C++ rule that default parameters appear last in the parameter list.

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... argument.¹⁹

But also consider strcpy from the standard C library, which both modifies an argument, and returns that same value as the function return value.

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... definition.²⁰

In the case of a ``placeholder'' parameter that is not yet used in the definition, omit the name in the definition to stop warnings.

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... types.²¹

A good example can be found in the MeasConvert class

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