For our iOS Unit Test example, we will setup a simple app that does the following: Setup a controller file in Xcode Setup a view file in Xcode Define a simple form with 2 number inputs and a button Entering numbers and clicking button shows the sum in a popup The final code looks lik...
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8.When we call objective c is runtime language what does it mean? 我们说的oc是动态运行时语言是什么意思? 答案:多态。 主要是将数据类型的确定由编译时,推迟到了运行时。 这个问题其实浅涉及到两个概念,运行时和多态。 简单来说,运行时机制使我们直到运行时才去决定一个对象的类别,以及调用该类别对象指...
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Just because we know that anidis an Objective-C object doesnotmean that it points to an object that derives from NSObject, or that it even has common methods like retain and release. One solution is to statically type our variable usingNSObject*as shown in number 2 above. This gives the...
The widespread use of aggressive language on Twitter raises concerns about potential negative influences on user behavior. Despite previous research explor
;;Don't beep. Just blink the modeline on errors.(setqring-bell-function (lambda() (invert-face 'mode-line) (run-with-timer 0.05 nil 'invert-face 'mode-line))) This should help Emacs be a bit more subtle in the face of everyday errors, you know, like pressing C-g. BEEP BEEP!
In any event, the code, being a mixture of LLM-generated code and my own rudimentary Python skills, is hardly an exemplar of efficient or elegant coding, and I am sure that there are many expert programmers who could do a much better job. But I think this is proof of concept that a...
This is where Swift 4.1's new keyDecodingStrategy property comes in: it’s set to .useDefaultKeys by default, which does a direct mapping of JSON names to Swift properties. However, if you change it to .convertFromSnakeCase then Codable handles the name conversion for us. For example: let...
How does a cipher differ from a code? A cipher transforms individual characters or bits of data, while a code may represent words or phrases with other words or symbols. 10 Can zero be used as a cipher? Historically, zero was sometimes used symbolically to mean 'nothing' in coding, but ...