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App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
... 项目合并工具
本文档最初由米尔斯学院（Mills College）的 Kate Feeney 为 AI Classic 编写。该计划在她的论文通过 App Inventor 鼓励协作 中进行了讨论。
该工具作为 Java 程序在 App Inventor 外部运行，需要在计算机上安装 Java 才能使用...
Difference between JVM and HotSpot?
...r Kit), under the GNU General Public License. HotSpot is written mainly in C++, and was originally developed under Sun Microsystems. It is currently developed under the OpenJDK Project, at www.java.net. The HotSpot JVM was available as an add-on for Java 1.2, and later was used as the default Sun JV...
What is std::move(), and when should it be used?
...
Wikipedia Page on C++11 R-value references and move constructors
In C++11, in addition to copy constructors, objects can have move constructors.
(And in addition to copy assignment operators, they have move assignment operators.)
The move co...
What are the mechanics of short string optimization in libc++?
...ke to know in more detail how it works in practice, specifically in the libc++ implementation:
2 Answers
...
Rule-of-Three becomes Rule-of-Five with C++11?
...tor is considered deprecated. In particular, the following perfectly valid C++03 polymorphic base class
class C {
virtual ~C() { } // allow subtype polymorphism
};
should be rewritten as follows:
class C {
C(const C&) = default; // Copy constructor
C(C&&) = defa...
Why are private fields private to the type, not the instance?
...he modern programming world.
However, C# has admittedly looked hardest at C++ and Java for its language design. While Eiffel and Modula-3 were also in the picture, considering the many features of Eiffel missing (multiple inheritance) I believe they chose the same route as Java and C++ when it came...
“Least Astonishment” and the Mutable Default Argument
...imum of fuzz and confusion. As someone comming from systems programming in C++ and sometimes naively "translating" language features, this false friend kicked me in the in the soft of the head big time, just like class attributes. I understand why things are this way, but I cannot help but dislike i...
std::string formatting like sprintf
...ectly, because you don't have write access to the underlying buffer (until C++11; see Dietrich Epp's comment). You'll have to do it first in a c-string, then copy it into a std::string:
char buff[100];
snprintf(buff, sizeof(buff), "%s", "Hello");
std::string buffAsStdStr = buff;
But I'm not...
Use of 'const' for function parameters
...
Sometimes (too often!) I have to untangle someone else's C++ code. And we all know that someone else's C++ code is a complete mess almost by definition :) So the first thing I do to decipher local data flow is put const in every variable definition until compiler starts barking. Th...
C pointers : pointing to an array of fixed size
...n is by using a pointer-to-array parameter
void foo(char (*p)[10]);
(in C++ language this is also done with references
void foo(char (&p)[10]);
).
This will enable language-level type checking, which will make sure that the array of exactly correct size is supplied as an argument. In fact...