Name
SPVM::Hash - Hash Data Structure
Usage
use Hash;
# Create hash
my $book = Hash->new;
my $book = Hash->new({});
my $book = Hash->new({id => 4, name => "Perl", price => 3000.0});
$book->set_int(id => 4);
$book->set_string(name => "Perl");
$book->set_double(price => 3000.0);
my $id = (int)$book->get_int("id");
my $name = (string)$book->get_string("name");
my $price = (double)$book->get_double("price");Description
Hash is Hash Data Structure. This is generally called associative array.
Class Methods
new
static method new : Hash ($key_values : object[]...)Create a new Hash object with key value pairs.
my $book = Hash->new;
my $book = Hash->new({});
my $book = Hash->new({id => 4, name => "Perl"});Instance Methods
count
count : int ()Count keys.
copy
copy : Hash ()Copy hash.
This is not deep copy. Address of keys and values is copied into new hash.
delete
delete : object ($key : string)Delete a key value pair. Deleted value is returned.
exists
exists : int ($key : string)Specify the key and check if the value exists. If exists, return 1, otherwise 0.
keys
keys : string[] ()Get keys. This method do not copy the strings.
values
values : object[] ()Get values.
get
get : object ($key : string)Get a value.
get_byte
get_byte : byte ($name : string)Get value with a key. the value is converted to byte type.
get_short
get_short : short ($name : string)Get value with a key. the value is converted to short type.
get_int
get_int : int ($name : string)Get value with a key. the value is converted to int type.
get_long
get_long : long ($name : string)Get value with a key. the value is converted to long type.
get_float
get_float : float ($name : string)Get value with a key. the value is converted to float type.
get_double
get_double : double ($name : string)Get value with a key. the value is converted to double type.
set
set : void ($key : string, $val : object)Set key value pair.
set_byte
set_byte : void ($name : string, $value : byte)Set key and value pair. byte value is converted to Byte object.
set_short
set_short : void ($name : string, $value : short)Set key and value pair. short value is converted to Short object.
set_int
set_int : void ($name : string, $value : int)Set key and value pair. int value is converted to Int object.
set_long
set_long : void ($name : string, $value : long)Set key and value pair. long value is converted to Long object.
set_float
set_float : void ($name : string, $value : float)Set key and value pair. float value is converted to Float object.
set_double
set_double : void ($name : string, $value : double)Set key and value pair. double value is converted to Double object.
set_string
set_string : void ($name : string, $value : string)Set key and value pair with string value.