29 Numerics library [numerics]

29.6 Numeric arrays [numarray]

29.6.2 Class template valarray [template.valarray]

29.6.2.3 Assignment [valarray.assign]

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valarray& operator=(const valarray& v);
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Effects: Each element of the *this array is assigned the value of the corresponding element of v.
If the length of v is not equal to the length of *this, resizes *this to make the two arrays the same length, as if by calling resize(v.size()), before performing the assignment.
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Postconditions: size() == v.size().
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Returns: *this.
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valarray& operator=(valarray&& v) noexcept;
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Effects: *this obtains the value of v.
The value of v after the assignment is not specified.
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Returns: *this.
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Complexity: Linear.
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valarray& operator=(initializer_list<T> il);
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Effects: Equivalent to: return *this = valarray(il);
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valarray& operator=(const T& v);
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Effects: Assigns v to each element of *this.
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Returns: *this.
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valarray& operator=(const slice_array<T>&); valarray& operator=(const gslice_array<T>&); valarray& operator=(const mask_array<T>&); valarray& operator=(const indirect_array<T>&);
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Preconditions: The length of the array to which the argument refers equals size().
The value of an element in the left-hand side of a valarray assignment operator does not depend on the value of another element in that left-hand side.
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These operators allow the results of a generalized subscripting operation to be assigned directly to a valarray.