Name
SPVM::Hash - Hash Data Structure
Usage
useHash;# Create hashmy$book= Hash->new;my$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.