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How does PHP 'foreach' actually work?

...ction iterate($arr) { foreach ($arr as $v) {} } $outerArr = [0, 1, 2, 3, 4]; iterate($outerArr); Here, $arr will be duplicated to prevent IAP changes on $arr from leaking to $outerArr. In terms of the conditions above, the array is not a reference (is_ref=0) and is used in two places (refcoun...
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_=> what does this underscore mean in Lambda expressions?

... 3 It's more common in Haskell and other functional languages. I think that's where it comes from. – Gabe Moothart ...
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INSERT … ON DUPLICATE KEY (do nothing)

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In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?

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What is a 'semantic predicate' in ANTLR?

... of semantic predicates in Antlr4 Semantic predicates in ANTLR4? ANTLR 3 A semantic predicate is a way to enforce extra (semantic) rules upon grammar actions using plain code. There are 3 types of semantic predicates: validating semantic predicates; gated semantic predicates; disambiguating...
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Asserting successive calls to a mock method

...the last call to a method. If I have code that calls the mocked method 3 times successively, each time with different parameters, how can I assert these 3 calls with their specific parameters? ...
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Create a custom event in Java

... | edited Jun 3 '17 at 15:58 Joel eldo 1344 bronze badges answered Jun 7 '11 at 18:50 ...
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Sass calculate percent minus px

... | edited Jan 3 at 22:18 answered Nov 7 '12 at 17:28 ...
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Infinite scrolling with React JS

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CSS table column autowidth

... the content. Suppose i have only 1 li element it should shrink vs. having 3 li elements etc): 4 Answers ...