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Using ChildActionOnly in MVC

... The ChildActionOnly attribute ensures that an action method can be called only as a child method from within a view. An action method doesn’t need to have this attribute to be used as a child action, but we tend to use this attribute to prevent the action methods from being invoked as a res...
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Replace transparency in PNG images with white background

...ings with Image Magick "convert" operations, but either nothing happens at all or I get an error. I don't want to go to an intermediate JPG form because I don't want the artifacts. Of course it's easy to do this in Gimp or Photoshop or whatever, but I'd really rather script it from the command lin...
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How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw

...gure and troubleshoot <p:fileUpload> depends on PrimeFaces version. All PrimeFaces versions The below requirements apply to all PrimeFaces versions: The enctype attribute of the <h:form> needs to be set to multipart/form-data. When this is absent, the ajax upload may just work, but t...
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Dependency injection through constructors or property setters?

...more for unit tests, so now I am playing the game of going around altering all the constructors to match, and it's taking ages. It makes me think that using properties with setters is a better way of getting dependencies. I don't think injected dependencies should be part of the interface to const...
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Python class inherits object

... so are numerous, to list some of them: Support for descriptors. Specifically, the following constructs are made possible with descriptors: classmethod: A method that receives the class as an implicit argument instead of the instance. staticmethod: A method that does not receive the implicit ar...
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What exactly is Hot Module Replacement in Webpack?

...g modules in a running application (and adding/removing modules). You basically can update changed modules without a full page reload. Documentation Prerequirements: Using Plugins: https://webpack.js.org/concepts/plugins/ Code Splitting: https://webpack.js.org/guides/code-splitting/ webpack-dev-...
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MFC 的SetWindowPos 用法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...window, the window loses its topmost status and is placed at the bottom of all other windows. HWND_NOTOPMOST= -2 在所有非"普通层"之上的"普通层" Places the window above all non-topmost windows (that is, behind all topmost windows). This flag has no effect if the window is already a n...
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What is a database transaction?

... you want to treat as "a whole." It has to either happen in full or not at all. A classical example is transferring money from one bank account to another. To do that you have first to withdraw the amount from the source account, and then deposit it to the destination account. The operation has to ...
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Origin null is not allowed by Access-Control-Allow-Origin

I have made a small xslt file to create an html output called weather.xsl with code as follows: 7 Answers ...
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Git push error '[remote rejected] master -> master (branch is currently checked out)'

... remote repository folder: git config --bool core.bare true Then delete all the files except .git in that folder. And then you will be able to perform git push to the remote repository without any errors. share |...