/** * 移动构造函数,其实就是把src指向的内存移动到了dst种 */ basic_string(basic_string&& __str) noexcept : _M_dataplus(_M_local_data(), std::move(__str._M_get_allocator())) { if (__str._M_is_local()) { traits_type::copy(_M_local_buf, __str._M_local_buf, _S_local_...
size_tcapacity()const{switch(category()) {caseCategory::isSmall:returnmaxSmallSize;caseCategory::isLarge:// For large-sized strings, a multi-referenced chunk has no// available capacity. This is because any attempt to append// data would trigger a new allocation.if(RefCounted::refs(ml_.dat...
AI代码解释 struct _Rep_base{size_type _M_length;size_type _M_capacity;_Atomic_word _M_refcount;};struct _Rep:_Rep_base{// Types:typedef typename _Alloc::template rebind<char>::other _Raw_bytes_alloc;bool_M_is_leaked()const{returnthis->_M_refcount<0;}bool_M_is_shared()const{return...
basic_string Constructs a string that is empty or initialized by specific characters or that is a copy of all or part of some other string object or C-string. Typedefs Expand table Type nameDescription allocator_type A type that represents the allocator class for a string object. const_iter...
If the input expression is typevarchar, the separator can't be typenvarchar. Null values are ignored and the corresponding separator isn't added. To return a place holder for null values, use theISNULLfunction as demonstrated inexample B. ...
Represents text as a sequence of UTF-16 code units.C# კოპირება public sealed class String : ICloneable, IComparable, IComparable<string>, IConvertible, IEquatable<string>, IParsable<string>, ISpanParsable<string>, System.Collections.Generic.IEnumerable<char>...
{ size_type _M_length; size_type _M_capacity; _Atomic_word _M_refcount; }; // _Rep是模板类basic_string内嵌struct struct _Rep : _Rep_base { // The following storage is init'd to 0 by the linker, // resulting (carefully) in an empty string with one reference. // 空的std::...
The length and type of the new string depend on the input value. HASH_CODE INT Returns the absolute value of HASH_CODE() of a string. In addition to string, int, bigint, float, and double are also supported. INITCAP VARCHAR Returns a string whose first letter is in uppercase and the...
String Data TypeThe string data type can contain characters, line feeds, carriage returns, and tab characters.The following is an example of a string declaration in a schema:<xs:element name="customer" type="xs:string"/> An element in your document might look like this:...
if byteCount data.length Remarks Allocates a new String constructed from a subarray of an array of 8-bit integer values. The offset argument is the index of the first byte of the subarray, and the count argument specifies the length of the subarray. Each byte in the subarray is converted...