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Visual Studio popup: “the operation could not be completed”

...tructor of your custom controls even at design time, and weird things can happen (at design time some properties dont works, your connection string probably isn't populated...) As a last resort... Try to install any VS update Try to disable VS extensions (if you installed any...) Try to update...
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How can I make a weak protocol reference in 'pure' Swift (without @objc)

...ss a protocol is declared as @objc , which I don't want in a pure Swift app. 6 Answers ...
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What's “tools:context” in Android layout files?

... more than one, but at least one. In the tool, we need to know about this mapping (which at runtime happens in the other direction; an activity can call setContentView(layout) to display a layout) in order to drive certain features. Right now, we're using it for one thing only: Picking the right th...
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Changing the background drawable of the searchview widget

... got to this I think it's worth metioning how I got to this, so that this approach can be used when customizing other views. Checking out view layout I've checked how SearchView layout looks like. In SearchView contructor one can find a line that inflates layout: inflater.inflate(R.layout.search...
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What is the difference between #import and #include in Objective-C?

...s a binary representation of the module and makes its API available to the application directly. Preprocessor definitions that precede the import declaration have no impact on the API provided... because the module itself was compiled as a separate, standalone module. Additionally, any linker flags ...
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Difference between require, include, require_once and include_once?

... Use require when the file is required by your application, e.g. an important message template or a file containing configuration variables without which the app would break. require_once when the file contains content that would produce an error on subsequent inclusion, ...
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Invalidating JSON Web Tokens

... working on, I'm thinking about switching over from a cookie based session approach (by this, I mean, storing an id to a key-value store containing user sessions in a user's browser) to a token-based session approach (no key-value store) using JSON Web Tokens (jwt). ...
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Plain Old CLR Object vs Data Transfer Object

...mple of the use of this pattern. Here's the difference: POCO describes an approach to programming (good old fashioned object oriented programming), where DTO is a pattern that is used to "transfer data" using objects. While you can treat POCOs like DTOs, you run the risk of creating an anemic doma...
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Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes

...through the entire JSF lifecycle upon (partial) form submit. JSF will then apply the request values (finding HTTP request parameter based on component's own client ID and then either setting it as submitted value in case of EditableValueHolder components or queueing a new ActionEvent in case of Acti...
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Advantages of Antlr (versus say, lex/yacc/bison) [closed]

...ojects, usually translators (such as a subset of EDIF streamed into an EDA app). Additionally, I've had to support code based on lex/yacc grammars dating back decades. So I know my way around the tools, though I'm no expert. ...