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Rest parameters are similar to Javascript's arguments object, which is an array-like object that contains all of the parameters (named and unnamed) in the current function call. Unlike arguments, however, rest parameters are true Array objects, so methods such as .slice() and .sort() can be used on them directly.
Slice semantics potentially differ per object; new semantics can be introduced when operator overloading the indexing operator. With Python standard lists (which are dynamic arrays), every slice is a copy. Slices of NumPy arrays, by contrast, are views onto the same underlying buffer.
In C++, by contrast, objects are copied automatically whenever a function takes an object argument by value or returns an object by value. Additionally, due to the lack of garbage collection in C++, programs will frequently copy an object whenever the ownership and lifetime of a single shared object would be unclear.
For unordered iteration over the keys in an object, JavaScript features the for..in loop: for ( const key in myObject ) { // Do stuff with myObject[key] } To limit the iteration to the object's own properties, excluding those inherited through the prototype chain, it's often useful to add a hasOwnProperty() test (or a hasOwn() test if supported).
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Object slicing, an object-oriented programming issue; Program slicing, a set of software engineering methods; Slicing, a mechanical process, see Cutting; Slicing (interface design), image slicing for web design and interface design; Slow slicing, a Chinese form of torture and execution
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Sam was the first to see the devastation. Their bungalow was gone. Jinghuan was stunned. “It felt like someone poured buckets of cold water on me,” she said.