Documentation

SequenceFirst

SequenceFirst[seq]⟹out

returns only the first monomer of the provided sequence.

Details

Input

Output

General Options

Examples

Basic Examples (4)

Extracts the first monomer from the sequence:

Works for any known polymer type:

Works on explicitly typed sequences as well:

Works for any known polymer type:

Additional Examples (1)

Numeric sequences work as well:

Options (6)

ExplicitlyTyped (4)

When set to True, ExplicitlyTyped will wrap the output in its polymer type:

When set to False, ExplicitlyTyped will strip the return the resulitng sequence sans the type:

If set to Automatic ExplicitlyTyped will preserve the input's explicitly typed status:

If set to Automatic ExplicitlyTyped will preserve the input's explicitly typed status:

Polymer (2)

The polymer option can be used to force the type:

The polymer option can be used to specify the type:

Attributes (1)

Listable (1)

The function is listable:

Possible Issues (1)

Stripping the type from a numeric sequence will use the degenerate monomer to fill in: