Multiple inheritance has been a touchy issue for many years, with opponents pointing to its increased complexity and ambiguity in situations such as the " diamond problem ", where it may be ambiguous as to which superclass a particular feature is inherited from if more than one superclass implements said feature.

It is called the " diamond problem " because of the shape of the class inheritance diagram in this situation.

Languages that allow only single inheritance, where a class can only derive from one base class, do not have the diamond problem.

One problem is when the mesh gets pulled into narrow diamond shapes ( rhombuses ) instead of squares.

Avi learns of this and, knowing Franky has a gambling problem, flies to London with his bodyguard " Rosebud " ( Sam Douglas ) to claim the diamond.

# REDIRECT multiple inheritance # The diamond problem

# REDIRECT Multiple inheritance # The diamond problem

Tolkowsky's guidelines, while revolutionary in their day, are not a definitive solution to the problem of finding the optimum proportions of a round brilliant cut diamond.

The diagonal, diamond shaped exhibition block was clearly different from the rectangular administration wing and the junction of the exhibition and administration blocks created a considerable design problem.

This can be used to avoid the problem of ambiguous hierarchy composition ( known as the " diamond problem ") by clarifying ambiguity over which ancestor class to use, as from the perspective of the deriving class ( B in the example above ) the virtual base ( V ) acts as though it were the direct base class of B, not a class derived indirectly through its base ( A ).

But when he sees the bizarre list of stolen and vandalized items-including a stethoscope, some lightbulbs, some old flannel trousers, a box of chocolates, a slashed rucksack, some boracic powder and a diamond ring later found in a bowl of a soup-he congratulates the warden, Mrs Hubbard, on a ' unique and beautiful problem '.

This led to the addition of the number sign (#, sometimes called ' octothorpe ,' ' pound ' or ' diamond ' in this context-' hash ' or ' gate ' in the UK ) and asterisk or " star " (*) keys as well as a group of keys for menu selection: A, B, C and D. In the end, the lettered keys were dropped from most phones, and it was many years before these keys became widely used for vertical service codes such as * 67 in the United States of America and Canada to suppress caller ID.

Sapphires also occur in shades of orange and brown, and colorless sapphires are sometimes used as diamond substitutes in jewelry.

As a secondary meaning, " vajra " refers to this indestructible substance, and so is sometimes translated as " adamantine " or " diamond ".

In the standard French deck, an ace has a single suit symbol ( a heart, diamond, spade, or club ) located in the middle of the card, sometimes large and decorated, especially in the case of the Ace of Spades.

Sp²-hybridized carbon structures that – in contrast to sp³-hybridized carbon in diamond – arrange in planar sheets (" graphene " sheets ) are sometimes also included in the class of diamondoid materials for nanotechnology, e. g., graphite, carbon nanotubes consisting of sheets of carbon atoms rolled into tubes, spherical buckyballs and other graphene structures.

The cross-section of the blade is typically that of a flattened diamond with a visible central ridge, though some are lenticular ( eye-shaped ) instead ; ancient bronze jian sometimes have a hexagonal cross-section.

The rhombus is often called a diamond, after the diamonds suit in playing cards, or a lozenge, though the latter sometimes refers specifically to a rhombus with a 45 ° angle.

It consists of a spherical central section, with two symmetrical sets of five prongs, which arc out from lotus blooms on either side of the sphere and come to a point at two points equidistant from the centre, thus giving it the appearance of a " diamond sceptre ", which is how the term is sometimes translated.

Ford sometimes used the diamond in his wedding ring to gouge the ball, but he was eventually caught by an umpire and warned to stop.

The Orlov ( sometimes spelled Orloff ) is a large diamond that is part of the collection of the Diamond Fund of the Moscow Kremlin.

The grit material is normally diamond and sometimes corundum for their hardness.

Numbered counter-clockwise, first, second and third bases are cushions ( sometimes informally referred to as bags ) shaped as 15 in ( 38 cm ) squares which are raised a short distance above the ground ; together with home plate, the fourth " base ," they form a square with sides of 90 ft ( 27. 4 m ) called the diamond.

Depending on what material is being ground, these wheels are made with industrial diamond ( when grinding tungsten carbide ), cubic boron nitride ( when grinding cobalt steel ), and other materials ( when grinding, for instance, ceramics ), set in a bond ( sometimes copper ).

The Xiphos sometimes has a midrib, or is diamond or lenticular in cross-section.

This result is sometimes called the diamond isomorphism theorem for modular lattices.

This diamond shape is so typical that in Finnish, the word " salmiakki " can sometimes refer to this shape instead of the candy.

The word is sometimes used to refer to an individual diamond in the design but more commonly refers to the overall pattern.

The term single-point diamond turning ( SPDT ) is sometimes applied, although as with other lathe work, the " single-point " label is sometimes only nominal ( radiused tool noses and contoured form tools being options ).

Quality control is a major part of the diamond turning process and is required after each stage of machining, sometimes after each pass of the cutting tool.

Even among these black diamond trails there is tremendous variety ; the ambiguous short but steep Waterfall is sometimes rated a black diamond and sometimes an intermediate blue square, and the infamous 38 degree pitch of Paradise is still only rated at a black diamond, when it would earn two or three of those diamonds at other ski areas.

Pliny may have mentioned them, although there is some debate as to the exact nature of the stone he referred to as Adamas ; In 2005, Australia, Botswana, Russia and Canada ranked among the primary sources of gemstone diamond production .< ref >

Like many jewelry firms, the Frankel business ran into financial difficulties during the depression of 1907 and referred to the gem as the " hoodoo diamond.

The Middle English word diaper originally referred to the type of cloth rather than its use ; " diaper " was the term for a pattern of repeated, diamond shapes, and later came to describe a white cotton or linen fabric with this pattern.

Diamond cutters are generally not referred to as lapidaries, due to the specialized techniques which are required to work diamond.

The center of Hollidaysburg is frequently referred to as " The Diamond ," where the buildings and parking spaces form a diamond.

A lozenge (◊), often referred to as a diamond, is a form of rhombus.

Grain sizes range from nanometers to hundreds of micrometers, usually referred to as " nanocrystalline " and " microcrystalline " diamond, respectively.

" Alongside the stanza referred to, Burns also presented Lawrie's daughters with verses describing his visits to Loudoun Manse and on one window pane in the manse, scratched the following line with his diamond, " Lovely Mrs. Lawrie, she is all charms.

Materials that are high in sp < sup > 3 </ sup > hybridized bonds are referred to as tetrahedral amorphous carbon ( owing to the tetrahedral shape formed by sp < sup > 3 </ sup > hybridized bonds ) or as diamond-like carbon ( owing to the similarity of many physical properties to those of diamond ).

Parclo designs with only two quadrants are commonly referred to as folded diamonds, due to their similarity with diamond interchanges.

There are 6 subspecies listed by ITIS, commonly referred to as carpet pythons and diamond pythons.

A carbon planet, also referred to as a diamond planet or carbide planet, is a theoretical type of planet proposed by Marc Kuchner that could form if protoplanetary discs are carbon-rich and oxygen-poor.

Although never referred to by name, Eclipso is characterized as the collective souls of an evil race of serpent-like humanoids called " Ophidians " who imprisoned themselves in a black diamond called the " Heart of Darkness " to eventually destroy the human race.

A baseball field can be referred to as a diamond.

" Tibetan Buddhism is sometimes referred to as the vajrayana, which can be translated either as the " lightning way ", or the " diamond way ".

The diamond has no official name but it has been referred to as the " Stuart " or " Holland " diamond in the past.

Gemologists use this classification to denote a diamond with a complete ( or almost-complete ) lack of nitrogen ; " Golkonda " material is also referred to as " 2A ".

In Paris ' higher circles, Kurakin was famously referred to as a " diamond prince ", due to magnificence and richness of his costumes.