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Do scala constructor parameters default to private val?
...
bar: Int
This is barely a constructor parameter. If this variable is not used anywhere except the constructor, it remains there. No field is generated. Otherwise private val bar field is created and value of bar parameter is assi...
STL:accumulate与自定义数据类型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...算数组或者容器中C++内置数据类型,例如:#include <numeric>int...C++ STL中有一个通用的数值类型计算函数— accumulate(),可以用来直接计算数组或者容器中C++内置数据类型,例如:
#include <numeric>
int arr[]={10,20,30,40,50};
vector<int> va(&arr...
shared_ptr指针被赋值后,原指针会引用清零、自动释放。 - C/C++ - 清泛网 ...
...被赋值后,原指针会引用清零、自动释放。std::shared_ptr<int> intg;void foo(std::shared_ptr<int> p){ ...shared_ptr指针被赋值后,原指针会引用清零、自动释放。
std::shared_ptr<int> intg;
void foo(std::shared_ptr<int> p)
{
intg = p; // 原指...
error C2664: “std::list::list(const std::allocator &)”: 不能将参数 1...
...const std::allocator<_Ty> &”
with
[
_Ty=int
]
原因如下: 无法从“std::vector<_Ty>”转换为“const std::allocator<_Ty>”
with
[
_Ty=int
]
没有可用于执行该转换的用户定义的转...
jsoncpp 不能处理__int64(long long)类型数据 - C/C++ - 清泛网 - 专注C/C++及内核技术
jsoncpp 不能处理__int64(long long)类型数据jsoncpp,是一个c++的解析和生成json的开源工具。如果你的c++程序需要解析或生成json,它会使这个过程变得很简单!但是,今天在用jsoncpp进...jsoncpp,是一个c++的解析和生成json的开源工具。如...
Calling Objective-C method from C++ member function?
...dard C wrapper function that gives the Objective-C object a usable C-style interface from non-Objective-C code (pick better names for your files, I have picked these names for verbosity):
MyObject-C-Interface.h
#ifndef __MYOBJECT_C_INTERFACE_H__
#define __MYOBJECT_C_INTERFACE_H__
// This is the C...
Where is array's length property defined?
...myArray.length ([]) provides the "capacity". That is, if for myArray = new int[10];, it returns 10. It is not the number of objects you've put in the array.
– wmorrison365
Feb 16 '12 at 13:15
...
CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
... push esi
769AEFA3 push edi ; __int32
769AEFA4 push ebx ; unsigned __int32
769AEFA5 xor esi, esi
769AEFA7 inc esi
769AEFA8 push esi ; int
769AEFA9 ...
Replace selector images programmatically
...:
StateListDrawable states = new StateListDrawable();
states.addState(new int[] {android.R.attr.state_pressed},
getResources().getDrawable(R.drawable.pressed));
states.addState(new int[] {android.R.attr.state_focused},
getResources().getDrawable(R.drawable.focused));
states.addState(new int...
Is inline assembly language slower than native C++ code?
... assembly you have to make well-defined functions with a well-defined call interface. However they can take in account whole-program optimization and inter-procedural optimization such
as register allocation, constant propagation, common subexpression elimination, instruction scheduling and other c...