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C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
C++ Lock-free Hazard Pointer（冒险指针）hazard_pointer1 Safe Reclamation MethodsFolly 的 Hazard Pointer 实现中有一段注释，详细描述了 C++ 里几种主流的安全内存回收方法，列表如下：优点缺点场景Locking易用读高开销
1. Safe Reclamation Methods
Fo...
How to insert values into C# Dictionary on instantiation?
Does anyone know if there is a way I can insert values into a C# Dictionary when I create it? I can, but don't want to, do
dict.Add(int, "string") for each item if there is something more efficient like:
...
How to make a JTable non-editable
...itable in the AbstractTableModel. What exists is the method isCellEditable(int,int) which takes rowIndex and coulmnIndex as parameters. The user can selectively enable/disable editing for a particular row/column by overriding "isCellEditable" method or can use the default implementation to disable e...
Programmatically update widget from activity/service/receiver
...r an update of my widget from the main activity. Isn't there some general intent I can broadcast?
8 Answers
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JSON Array iteration in Android/Java
...> applicationSettings = new HashMap<String,String>();
for(int i=0; i<settings.length(); i++){
String value = settings.getJSONObject(i).getString("value");
String name = settings.getJSONObject(i).getString("name");
applicationSettings.put(name, ...
How to replace part of string by position?
...
@redcalx That's true, but an extra cost is introduced by introducing a StringBuilder object and by reducing readability
– Fortega
Apr 23 '18 at 14:21
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Why does casting int to invalid enum value NOT throw exception?
...t of the people who created .NET. An enum is backed by another value type (int, short, byte, etc), and so it can actually have any value that is valid for those value types.
I personally am not a fan of the way this works, so I made a series of utility methods:
/// <summary>
/// Utility meth...
Nested Models in Backbone.js, how to approach
... for nested models
parse: (response) -> # function definition
# convert each comment attribute into a CommentsCollection
if _.isArray response
_.each response, (obj) ->
obj.comments = new AppName.Collections.CommentsCollection obj.comments
else
response.comm...
What is recursion and when should I use it?
...nction's arguments and local variables
the function's arguments are copied into this new space
control jumps to the function
the function's code runs
the function's result is copied into a return value
the stack is rewound to its previous position
control jumps back to where the function was called
...
Default value of a type at Runtime [duplicate]
...ference types and new myType() for value types (which corresponds to 0 for int, float, etc) So you really only need to account for two cases:
object GetDefaultValue(Type t)
{
if (t.IsValueType)
return Activator.CreateInstance(t);
return null;
}
(Because value types always have a ...