9. Swift
Introduced to great fanfare at WWDC 2014, Swift is Apple’s new programming language, billed as “Objective-C without the C.” This was an interesting marketing slogan, considering the fact that we know Objective-C was created by adding most of Smalltalk to C (Equation 9.1).
According to the rules of Algebra I learned in high school, subtracting C from both sides of the equation (Equation 9.2) does not yield Swift, and in fact Swift seems much more closely related to C# or C++ than Smalltalk or, for that matter, Objective-C.
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