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A
specialized template function is a function that we
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implement
with the same signature as a template function
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instantiation.
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The
specialization must be defined after the definition of
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the
function template, but before the first use of the
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specialization.
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The
definition of the specialized template function must
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be
preceded by the template keyword and followed by an
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empty
set of angle brackets (<>) (i.e., template<>).
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The
specialization will then be used instead of a version
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that
the compiler could instantiate.
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