ne_buffer_clear
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## Name

ne_buffer_clear, ne_buffer_grow, ne_buffer_altered — general purpose of group of functions

## Synopsis

    #include <ne_string.h>

``void ne_buffer_clear(`ne_buffer *buf`)`;`
``void ne_buffer_altered(`ne_buffer *buf`)`;`
``void ne_buffer_grow(`ne_buffer *buf, size_t size`)`;`

## Description

The `ne_buffer_clear` function sets the string stored in `buf` to be the empty string (`""`).

The `ne_buffer_altered` function must be used after the string stored in the buffer `buf` is modified by directly rather than using ne_buffer_append, ne_buffer_zappend or ne_buffer_concat.

The `ne_buffer_grow` function ensures that at least `size` bytes are allocated for the string; this can be used if a large amount of data is going to be appended to the buffer and may result in more efficient memory allocation.

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