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Returns the first character or element.

Returns the first byte of a binary or the first element of a list. An empty binary is returned when the input is empty.

For example:

{{ value|first }}

When the value is hello then the output is h.

Note: This function is not safe to use with multibyte character values, use with care.

For a regular list:

{{ [1,2,3]|first }}

The filtered value is 1.

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