大约有 44,000 项符合查询结果(耗时:0.0953秒) [XML]

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When should I make explicit use of the `this` pointer?

...re is a name ambiguity, where it can be used to disambiguate class members and local variables. However, here is a completely different case where this-> is explicitly required. Consider the following code: template<class T> struct A { int i; }; template<class T> struct B : A&lt...
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How do I find the PublicKeyToken for a particular dll?

...e("c:\MyDLL.dll")).FullName The output will provide the Version, Culture and PublicKeyToken as shown below: MyDLL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a share | impro...
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std::vector versus std::array in C++

What are the difference between a std::vector and an std::array in C++? When should one be preferred over another? What are the pros and cons of each? All my textbook does is list how they are the same. ...
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Convert a List into an ObservableCollection

... postfix: "", imageUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
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Unable to cast object of type 'System.DBNull' to type 'System.String`

...hat column, the return value is System.DBNull. – Alexander May 27 '14 at 7:52 In the first case @Alexander mentions -n...
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Multiple submit buttons on HTML form – designate one button as default [duplicate]

...n; } #buttons input { float: right; } will effectively reverse the order and thus the "Next" button will be the value triggered by hitting enter. This kind of technique will cover many circumstances without having to resort to more hacky JavaScript methods. ...
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Where does mongodb stand in the CAP theorem?

... MongoDB is strongly consistent by default - if you do a write and then do a read, assuming the write was successful you will always be able to read the result of the write you just read. This is because MongoDB is a single-master system and all reads go to the primary by default. If y...
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Create timestamp variable in bash script

...ittle easier. I want to create the variable at the beginning of the script and have it print out the current time whenever I issue echo $timestamp . It proving to be more difficult then I thought. Here are some things I've tried: ...
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What is the difference between require() and library()?

What is the difference between require() and library() ? 8 Answers 8 ...
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How can I access an object property named as a variable in php?

...'$t'}; Alternatively, you can put the name of the property in a variable and use it like this: $property_name = '$t'; echo $object->$property_name; You can see both of these in action on repl.it: https://repl.it/@jrunning/SpiritedTroubledWorkspace ...