---
name: "Bio::DB::GFF::Typename"
section: "3pm"
platform: "linux"
package: "libbio-db-gff-perl"
version: "1.7.4-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Bio::DB::GFF::Typename"
---

# Bio::DB::GFF::Typename(3pm)

## NAME

Bio::DB::GFF::Typename -- The name of a feature type

## SYNOPSIS

```
  use Bio::DB::GFF;
  my $type = Bio::DB::GFF::Typename->new(similarity => 'BLAT_EST_GENOME');
  my $segment = $segment->features($type);
```

## DESCRIPTION

Bio::DB::GFF::Typename objects encapsulate the combination of feature method and source used by the GFF flat file format.  They can be used in the Bio::DB::GFF modules wherever a feature type is called for.

Since there are relatively few types and many features, this module maintains a memory cache of unique types so that two features of the same type will share the same Bio::DB::GFF::Typename object.

## METHODS

### new

```
 Title   : new
 Usage   : $type = Bio::DB::GFF::Typename->new($method,$source)
 Function: create a new Bio::DB::GFF::Typename object
 Returns : a new Bio::DB::GFF::Typename object
 Args    : method and source
 Status  : Public
```

### method

```
 Title   : method
 Usage   : $method = $type->method([$newmethod])
 Function: get or set the method
 Returns : a method name
 Args    : new method name (optional)
 Status  : Public
```

### source

```
 Title   : source
 Usage   : $source = $type->source([$newsource])
 Function: get or set the source
 Returns : a source name
 Args    : new source name (optional)
 Status  : Public
```

### asString

```
 Title   : asString
 Usage   : $string = $type->asString
 Function: get the method and source as a string
 Returns : a string in "method:source" format
 Args    : none
 Status  : Public
```

This method is used by operator overloading to overload the '""' operator.

### clone

```
 Title   : clone
 Usage   : $new_clone = $type->clone;
 Function: clone this object
 Returns : a new Bio::DB::GFF::Typename object
 Args    : none
 Status  : Public
```

This method creates an exact copy of the object.

### match

```
 Title   : match
 Usage   : $boolean = $type->match($type_or_string)
 Function: fuzzy match on types
 Returns : a flag indicating that the argument matches the object
 Args    : a Bio::DB::GFF::typename object, or a string in method:source format
 Status  : Public
```

This match allows Sequence:Link and Sequence: to match, but not Sequence:Link and Sequence:Genomic\_canonical.

## BUGS

This module is still under development.

## SEE ALSO

bioperl, Bio::DB::GFF, Bio::DB::RelSegment

## AUTHOR

Lincoln Stein \<lstein@cshl.org\>.

Copyright (c) 2001 Cold Spring Harbor Laboratory.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.