---
name: "Specio::Library::Perl"
section: "3pm"
platform: "linux"
package: "perl-specio"
version: "0.53-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Specio::Library::Perl"
---

# Specio::Library::Perl(3pm)

Implements type constraint objects for some common Perl language things

## NAME

Specio::Library::Perl - Implements type constraint objects for some common Perl language things

## VERSION

version 0.53

## DESCRIPTION

This library provides some additional string types for common cases.

### PackageName

A valid package name. Unlike the `"ClassName"` constraint from the Specio::Library::Builtins library, this package does not need to be loaded.

This type does allow Unicode characters.

### ModuleName

Same as `"PackageName"`.

### DistName

A valid distribution name like `"DBD-Pg"` Basically this is the same as a package name with the double-colons replaced by dashes. Note that there are some historical distribution names that don't fit this pattern, like `"CGI.pm"`.

This type does allow Unicode characters.

### Identifier

An Identifier is something that could be used as a symbol name or other identifier (filehandle, directory handle, subroutine name, format name, or label). It's what you put after the sigil (dollar sign, at sign, percent sign) in a variable name. Generally, it's a bunch of word characters not starting with a digit.

This type does allow Unicode characters.

### SafeIdentifier

This is just like an `"Identifier"` but it excludes the single-character variables underscore (`"_"`), `"a"`\< and `"b"`, as these are special variables to the Perl interpreter.

### LaxVersionStr and StrictVersionStr

Lax and strict version strings use the is\_lax and is\_strict methods from `"version"` to check if the given string would be a valid lax or strict version. version::Internals covers the details but basically: lax versions are everything you may do, and strict omit many of the usages best avoided.

### CREDITS

Much of the code and docs for this library comes from MooseX::Types::Perl, written by Ricardo SIGNES \<rjbs@cpan.org\>.

## SUPPORT

Bugs may be submitted at \<https://github.com/houseabsolute/Specio/issues\>.

## SOURCE

The source code repository for Specio can be found at \<https://github.com/houseabsolute/Specio\>.

## AUTHOR

Dave Rolsky \<autarch@urth.org\>

## COPYRIGHT AND LICENSE

This software is Copyright (c) 2012 - 2025 by Dave Rolsky.

This is free software, licensed under:

```
  The Artistic License 2.0 (GPL Compatible)
```

The full text of the license can be found in the *LICENSE* file included with this distribution.