ITK/Proposals:Concept Checking

Macro Implementation

List of Concepts

See Insight/Code/Common/itkConceptChecking.h.

Index	Concept	Description
1	DefaultConstructible	Concept requiring T to have a default constructor.
2	CopyConstructible	Concept requiring T to have a copy constructor.
3	Convertible	Concept requiring T1 to be convertible to T2.
4	Assignable	Concept requiring T to have operator =.
5	LessThanComparable	Concept requiring T1 to have operators < and <= with a right-hand operator of type T2.
6	EqualityComparable	Concept requiring T1 to have operators == and != with a right-hand operator of type T2.
7	Comparable	Concept requiring T1 to have operators <, >, <=, >=, ==, != with a right-hand operator of type T2.
8	AdditiveOperators	Concept requiring T1 to have operators +, -, +=, -= in the form T3 = T1 op T2.
9	MultiplicativeOperators	Concept requiring T1 to have operators *, /, *=, /= in the form T3 = T1 op T2.
10	Signed	Concept requiring T to be signed.
11	SameType	Concept requiring T1 and T2 to be the same type.
12	SameDimension	Concept requiring D1 and D2 to be the same dimension.
13	GreaterThanComparable	Concept requiring T1 to have operators > and >= with a right-hand operator of type T2.
14	LogicalOperators	Concept requiring T1 to have operators &, I, ^, &=, I=, ^= in the form T3 = T1 op T2.
15	NotOperator	Concept requiring T to have operator !.
16	IncrementDecrementOperators	Concept requiring T to have operators ++ and --.
17	OStreamWritable	Concept requiring T to be writable to an ostream.
18	HasNumericTraits	Concept requiring T to have NumericTraits.
19	HasPixelTraits	Concept requiring T to have PixelTraits.
20	HasJoinTraits	Concept requiring T to have JoinTraits.
21	SameDimensionOrMinusOne	Concept requiring D1 and D2 to be the same dimension or D2-1 = D2.

Proposed concept additions

Additional concepts for requiring integer or noninteger datatypes should be added to the toolkit. NumericTraits defines static boolean constants

• is_bounded
• is_exact
• is_iec559 (???)
• is_integer
• is_modulo
• is_signed
• is_specialized
• tinyness_before

These traits can be used to define concepts in a manner similar to the Signed concept. We should consider separating the concepts of integer, non-integer, floating point so that we can expand our native datatypes to include a fixed point representation.

The concepts below are poorly named. We should not have a concept called Integer since a user could confuse the name of the concept with a datatype. Unfortunately, none of the current concepts have the word concept in their name. We could follow NumericTraits, and make the new concepts called IsInteger.

Index	Concept	Description
13	Integer	Concept requiring T to be an integer.
14	Noninteger	Concept requiring T to be noninteger (floating point or fixed point).
15	FloatingPoint	Concept requiring T to be floating point (not integer and not fixed point)
16	FixedPoint	Concept requiring T to be an ITK fixed point representation (not integer and not floating point)

Integration into Filters

Schedule

Please follow the link below for a detailed list of filters and their associated concepts.

List of Filters

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