用create 后面用 as , 若直接用 type 后面用 is create 是创 object , 而 type 是创 record . 区别是 用 create 后面用 as , 若直接用 type 后面用 is create 是创 object , 而 type 是创 record . 一般定义object的语法: 用 create type 自定义表类型A as table of 自定义Object类型A 和 create ...
C# コピー // // This exposes the C# class _MySampleView as the Objective-C MyView // [Export ("MyView")] public class _MySampleView : UIView { } Objective-C メソッド一般に、MonoTouch クラスは 1 つを基になる Objective-C クラスにマップします。 たとえば、C# クラス "...
PyTypeObject PyUnicode_Type = { PyVarObject_HEAD_INIT(&PyType_Type, 0) "str", /* tp_name */ sizeof(PyUnicodeObject), /* tp_basicsize */ 0, /* tp_itemsize */ /* Slots */ (destructor)unicode_dealloc, /* tp_dealloc */ ... unicode_repr, /* tp_repr */ &unicode_as_number...
struct ExpandedObjectHeader{/* Phony varlena header */int32 vl_len_;/* always EOH_HEADER_MAGIC, see below */constExpandedObjectMethods*eoh_methods;MemoryContext eoh_context;char eoh_rw_ptr[EXPANDED_POINTER_SIZE];// varattrib_1b_e 头加个 ExpandedObjectHeader指针char eoh_ro_ptr[EXPANDED_POINTE...
ThecompareTomethod comparesObjectStreamFieldsfor use in sorting. Primitive fields are ranked as "smaller" than non-primitive fields; fields otherwise equal are ranked alphabetically. ThetoStringmethod returns a printable representation with name and type. ...
In the Microsoft® .NET Framework 1.1 and 2.0, if an object is greater than or equal to 85,000 bytes it's considered a large object. This number was determined as a result of performance tuning. When an object allocation request comes in and meets that size threshold, it will ...
Object types are a generalization of the built-in datatypes found in most programming languages. PL/SQL provides a variety of built-in scalar and composite datatypes, each of which is associated with a set of predefined operations. Ascalartype (such asCHAR) has no internal components. Acomposit...
An object has a 'type' that determines what it represents and what kind of data it contains. An object's type is fixed when it is created. Types themselves are represented as objects; an object contains a pointer to the corresponding type object. The type itself has a type pointer pointin...
Create aMapobject that contains test results for patients. For any patient, the results might be in either a numeric array or in a file. You can store numeric arrays and file names as values in the same map. To store values that do not have the same data type in the same map, specif...
If no model is provided then the machine instance itself acts as a model.When at the beginning I said "minimal", it was because while this state machine is technically operational, it doesn't actually do anything. It starts in the 'solid' state, but won't ever move into another state,...