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BOOK: Professional C++, 3rd Edition
This is the forum to discuss the Wrox book Professional C++, 3rd Edition by Marc Gregoire,; ISBN: 978-1-118-85805-9
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Old December 13th, 2016, 07:06 PM
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Default Ch 7: Initializer-List Constructors example

The first example for Initializer-List Constructors doesn't seem right. Specifically, the two uses of the range for loop:

for (auto value : args) ...

for (auto value : mSequence) ...

As these are, the copy constructor is called and then the value is throw away, right?

Earlier in the page there is the NOTE: For performance reasons, it is best to pass objects by const reference instead.

Wouldn't it be better for the two range-for examples be const references?

for (const auto& value: args) ...

for (const auto& value : mSequence) ...

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