大约有 40,000 项符合查询结果(耗时:0.0310秒) [XML]

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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?

... RaisePropertyChanged("ViewModelCopyOfSomeProperty"); } But typically this is only needed if more than one object will be making changes to the Model's data, which is not usually the case. If you ever have a case where you don't actually have a reference to your Model property to attach t...
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Get content uri from file path in android

...ndex(MediaStore.MediaColumns._ID)); cursor.close(); return Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "" + id); } else { if (imageFile.exists()) { ContentValues values = new ContentValues(); values.put(MediaStore.Images.Media.DATA, filePath); r...
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What is the difference between the OAuth Authorization Code and Implicit workflows? When to use each

... The access_token is what you need to call a protected resource (an API). In the Authorization Code flow there are 2 steps to get it: User must authenticate and returns a code to the API consumer (called the "Client"). The "client" of the API (usually your web s...
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Pelican 3.3 pelican-quickstart error “ValueError: unknown locale: UTF-8”

... You could try a solution posted here or here. Basically, add some lines to your ~/.bash_profile: export LC_ALL=en_US.UTF-8 export LANG=en_US.UTF-8 There is an outstanding bug report related to this issue. It appears that Python makes some assumptions about the format of l...
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Flattening a shallow list in Python [duplicate]

...st of iterables with a list comprehension, or failing that, what would you all consider to be the best way to flatten a shallow list like this, balancing performance and readability? ...
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Error installing mysql2: Failed to build gem native extension

I am having some problems when trying to install mysql2 gem for Rails. When I try to install it by running bundle install or gem install mysql2 it gives me the following error: ...
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How to display the default iOS 6 share action sheet with available share options?

...he UIActivityViewController stated in the other answer makes this trivial. All you have to do is specify the text/image/URL that you want to share and present the activity view controller modally and iOS will automatically display all applicable sharing services. Examples: Objective-C - (void)shar...
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Windows threading: _beginthread vs _beginthreadex vs CreateThread C++

... CreateThread() is a raw Win32 API call for creating another thread of control at the kernel level. _beginthread() & _beginthreadex() are C runtime library calls that call CreateThread() behind the scenes. Once CreateThread() has returned, _beginthread/ex...
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Do I need dependency injection in NodeJS, or how to deal with …?

...eaddirSync method or you can return an entirely different module when you call require. Method 1: var oldmethod = fs.readdirSync; fs.readdirSync = function(dir) { return ['somefile.txt', 'error.txt', 'anotherfile.txt']; }; *** PERFORM TEST *** *** RESTORE METHOD AFTER TEST **** fs.readddirS...
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云数据及Firebase组件简介 · App Inventor 2 中文网

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