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## Function template to_upper

boost::algorithm::to_upper — Convert to upper case.

## Synopsis

    template<typename WritableRangeT>
      void to_upper(WritableRangeT & Input,
                    const std::locale & Loc = std::locale());

## Description

Each element of the input sequence is converted to upper case. The input sequence is modified in-place.

Parameters:

`Input` | An input range
`Loc` | a locale used for conversion

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