package biocaml

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The OCaml Bioinformatics Library

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v0.10.0.tar.gz
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doc/biocaml.unix/Biocaml_unix/Seq/index.html

Module Biocaml_unix.Seq

Nucleic acid sequences. A nucleic acid code is any of A, C, G, T, U, R, Y, K, M, S, W, B, D, H, V, N, or X. See IUB/IUPAC standards for further information. Gaps are not supported. Internal representation uses uppercase, but constructors are case-insensitive. By convention the first nucleic acid in a sequence is numbered 1.

type t

Type of a sequence

exception Bad of string
val of_string : string -> t

Make sequence from string. Raise Bad if unsuccessful.

val of_buffer : Core_kernel.Buffer.t -> t

Make sequence from buffer. Raise Bad if unsuccessful.

val nth : t -> int -> char

nth t i returns the ith nucleic acid in sequence t. Raise Failure if i is out of range.

val length : t -> int

Length of sequence.

val to_string : t -> string

Return string representation of sequence. Answer can be successfully converted back using of_string.

val is_nucleic_acid : char -> bool

True if given character represents one of the allowed nucleic acid codes, case-insensitive.

val slice : int -> int -> t -> t

slice first last t returns the sub-sequence, or slice, of t starting from index first to last (inclusive). Raise Failure if indices out of range or if first > last.

val fold_left : ('a -> char -> 'a) -> 'a -> t -> 'a

see String.fold_left.

val fold_lefti : ('a -> int -> char -> 'a) -> 'a -> t -> 'a

String.fold_lefti

Unsafe Sequences
val of_buffer_unsafe : Core_kernel.Buffer.t -> t
val of_string_unsafe : string -> t

Make a sequence from given buffer or string. Every character in input should satisfy is_nucleic_acid, else returned sequence is ill-formed and behavior of operations on it are undefined.

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