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Compiler Ambiguous invocation error - anonymous method and method group with Func or Action

...exactly the situation we are in here. Moving on: A single method M is selected corresponding to a method invocation of the form E(A) [...] The argument list A is a list of expressions, each classified as a variable [...] of the corresponding parameter in the formal-parameter-list of D. OK. So...
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What does the “map” method do in Ruby?

... map, along with select and each is one of Ruby's workhorses in my code. It allows you to run an operation on each of your array's objects and return them all in the same place. An example would be to increment an array of numbers by one: [...
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What is Dispatcher Servlet in Spring?

... I have a question please, how it select the view in case of returning JSON object that we see in the browser, does it return to the same URI if there is no logical view selected? – Nesrin Jan 11 '19 at 20:44 ...
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How to open the Chrome Developer Tools in a new window?

...hrome 52, the UI has changed. When the Developer Tools dialog is open, you select the vertical ellipsis and can then choose the docking position: Select the icon on the left to open the Chrome Developer Tools in a new window: Previously Click and hold the button next to the close button of t...
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What is your naming convention for stored procedures? [closed]

...case of needing schema specifics, it's easy enough to find. For the casual SELECT query, it is irrelevant. In fact, I regard being able to treat tables and views the same as a big advantage. Unlike with functions and stored procedures, the name of a table or view is unlikely to start with a verb, or...
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How can I return an empty IEnumerable?

...rExists) yield break; foreach(var descendant in doc.Descendants("user").Select(user => new Friend { ID = user.Element("id").Value, Name = user.Element("name").Value, URL = user.Element("url").Value, Photo = user.Element("photo").Value })) { yield r...
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What's the difference between “git reset” and “git checkout”?

.... git checkout is about updating the working tree and switching currently "selected" branch (the HEAD). – Mikko Rantalainen Dec 9 '13 at 11:02 2 ...
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How to make a .jar out from an Android Studio project

...enerated jar into your required project's lib folder-->right click-->select "add as library" share | improve this answer | follow | ...
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Is onload equal to readyState==4 in XMLHttpRequest?

...r.readyState + ", status: " + xhr.status; logText(evInfo); } function selected(radio) { document.getElementById('url').value = radio.value; } function testUrl() { clearLog(); var url = document.getElementById('url').value; if (!url) logText("Please select or type a URL"...
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I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?

...nner. setOnItemClickListener cannot be used with a Spinner. Use setOnItemSelectedListener instead. share | improve this answer | follow | ...