| Name : perl-Attribute-Types
| |
| Version : 0.10
| Vendor : obs://build_opensuse_org/devel:languages:perl
|
| Release : lp154.9.1
| Date : 2023-01-27 18:38:49
|
| Group : Development/Libraries/Perl
| Source RPM : perl-Attribute-Types-0.10-lp154.9.1.src.rpm
|
| Size : 0.02 MB
| |
| Packager : https://www_suse_com/
| |
| Summary : Attributes that confer type on variables
|
Description :
The Attribute::Types module provides 10 universally accessible attributes
that can be used to create variables that accept assignments of only
specific types of data.
The attributes are:
* \'INTEGER\'
Indicates that the associated scalar, or the elements of the associated
array, or the entries of the associated hash can only contain integer
values (those values that are internally represented as actual numbers (or
may be converted to actual numbers without generating a warning), and for
which \'int($value)==$value)\'.
The attribute may also be specified with a range of integer values,
indicating a further restriction on the values the associated variable can
store. For example:
my $x1 : INTEGER(1..100); # Any int between 1 and 100
my $x2 : INTEGER(-10..10); # Any ine between -10 and 10
my $x3 : INTEGER(0..); # Any positive int
my $x4 : INTEGER(..99); # Any int < 100 (including negatives)
* \'NUMBER\'
Indicates that the associated scalar, or the elements of the associated
array, or the entries of the associated hash can only contain values that
are internally represented by (or silently convertible to) valid Perl
numbers.
The attribute may also be specified with a range of numerical values,
indicating a further restriction on the values the associated variable can
store. For example:
my $x1 : NUMBER(1.0..100.0); # Any number between 1 and 100
my $x2 : NUMBER(-10..10); # Any number between -10 and 10
my $x3 : NUMBER(0..); # Any positive number
my $x4 : NUMBER(..99.9); # Any number < 99.9 (incl. negatives)
* \'SCALAR\'
Indicates that the associated scalar, or the elements of the associated
array, or the entries of the associated hash can only contain references to
scalars (i.e. only values for which \'ref($value) eq \'SCALAR\'\').
* \'ARRAY\'
Indicates that the associated variable can only contain references to
arrays (i.e. only values for which \'ref($value) eq \'ARRAY\'\').
* \'HASH\'
Indicates that the associated variable can only contain references to
hashes (i.e. only values for which \'ref($value) eq \'HASH\'\').
* \'CODE\'
Indicates that the associated variable can only contain references to
subroutines (i.e. only values for which \'ref($value) eq \'CODE\'\').
* \'GLOB\'
Indicates that the associated variable can only contain references to
typeglobs (i.e. only values for which \'ref($value) eq \'GLOB\'\').
* \'REF\'
Indicates that the associated variable can only contain references to other
references (i.e. only values for which \'ref($value) eq \'REF\'\').
* \'REGEX\'
Indicates that the associated variable can only contain references to
precompiled regular expressions (i.e. only values for which \'ref($value) eq
\'Regexp\'\').
* \'Type\'
Used to specify class-wise or generic storage constraints on a variable.
There are three permitted syntaxes:
* \'Type(Class::Name)\'
Indicates that the associated variable can only contain references to
objects belonging to the specified class, or to one of its derived classes.
* \'Type(/pattern/)\'
Indicates that the associated variable can only contain values that
successfully match the specified pattern.
* \'Type(&subname)\'
Indicates that the associated variable can only contain values for which
the specified subroutine returns true when passed the value as its first
argument.
Note that anonymous subroutines cannot be used in this context (they are
run-time phenomena and types have to be set up at compile-time).
If the module is imported with a list of attribute names:
use Attribute::Types qw(INTEGER HASH);
then only those attributes can be used to specify types.
|
RPM found in directory: /packages/linux-pbone/ftp5.gwdg.de/pub/opensuse/repositories/devel:/languages:/perl:/CPAN-A/15.4/noarch |
