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与复制构造函数相关的错误.例如:0x77D9FCAA (ntdll.dll) (prog31.exe 中)处...

...含指针成员,没有复制构造函数出错 struct Node { Node(char *n="",int a = 0) { name = strdup(n); strcpy(name,n); age = a ; } ~Node() { delete[] name; } char *name; int age; }; int main() { Node node1("Roger",20),node2(node1); //pri...
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Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...Dokan.pas里的定义 _DOKAN_OPTIONS = packed record DriveLetter: WCHAR; // Drive letter to be mounted ThreadCount: Word; // Number of threads to be used DebugMode: Boolean; UseStdErr: Boolean; UseAltStream: Boolean; UseKeepAlive: Boolean; GlobalContext: Int64; ...
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Entity Framework - Code First - Can't Store List

... Great solution for EF Core. Although it seems to have an issue whit char to string conversion. I had to implement it like such: .HasConversion( v => string.Join(";", v), v => v.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries));...
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JavaScript style for optional callbacks

...tions ( rest , combs => callback (combs .concat (combs .map (c => [ x, ...c ]))) ) console.log (combinations (['A', 'B', 'C'])) // [ [] // , [ 'C' ] // , [ 'B' ] // , [ 'B', 'C' ] // , [ 'A' ] // , [ 'A', 'C' ] // , [ 'A', 'B' ] // , [ 'A', 'B...
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Why do we need fibers

...> #<Enumerator: [1, 2, 3]:reverse_each> irb(main):002:0> "abc".chars => #<Enumerator: "abc":chars> irb(main):003:0> 1.upto(10) => #<Enumerator: 1:upto(10)> These Enumerators are Enumerable objects, and their each methods yield the elements which would have been yie...
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How important is the order of columns in indexes?

...st selective and the other the reverse. CREATE TABLE Table1(MostSelective char(800), SecondMost TINYINT, Least CHAR(1), Filler CHAR(4000) null); CREATE TABLE Table2(MostSelective char(800), SecondMost TINYINT, Least CHAR(1), Filler CHAR(4000) null); CREATE NONCLUSTERED INDEX MyINDX on Table1(Mos...
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Best Practices: working with long, multiline strings in PHP?

...t from the rest of the text and variables also stand out better if you use concatenation rather than inject them inside double quoted string. So I might do something like this with your original example: $text = 'Hello ' . $vars->name . ',' . "\r\n\r\n" . 'The second line starts two ...
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How to know the size of the string in bytes?

... You can use encoding like ASCII to get a character per byte by using the System.Text.Encoding class. or try this System.Text.ASCIIEncoding.Unicode.GetByteCount(string); System.Text.ASCIIEncoding.ASCII.GetByteCount(string); ...
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Inheriting from a template class in c++

... create objects from any other class). Another such class would be Area<char>. Note that those are completely different classes, which have nothing in common except for the fact that they were generated from the same class template. Since Area is not a class, you cannot derive the class Recta...
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What is the best way to find the users home directory in Java?

... = null; int dwFlags = Shell32.SHGFP_TYPE_CURRENT; char[] pszPath = new char[Shell32.MAX_PATH]; int hResult = Shell32.INSTANCE.SHGetFolderPath(hwndOwner, nFolder, hToken, dwFlags, pszPath); if (Shell32.S_OK == hResult) { ...