# toUpper - SeqAn API Documentation

# fn() toUpper
Convert characters in sequence or StringSet to upper case in-place.

Defined in | <seqan/modifier.h>
Signature | `void toUpper(sequence); void toUpper(stringSet);`

## Parameters

`sequence` | The ContainerConcept to convert to upper-case.
`stringSet` | The StringSet to convert to upper-case.

## Data Races

Thread safety unknown!

#### Dox Sources

    /*!
     * @fn toUpper
     *
     * @headerfile <seqan/modifier.h>
     *
     * @brief Convert characters in sequence or StringSet to upper case in-place.
     *
     * @signature void toUpper(sequence);
     * @signature void toUpper(stringSet);
     *
     * @param[in,out] sequence The ContainerConcept to convert to upper-case.
     * @param[in,out] stringSet The StringSet to convert to upper-case.
     */