/ 
SPVM-0.0441
River stage two • 37 direct dependents • 40 total dependents
/ SPVM::StringBuffer

NAME

SPVM::StringBuffer - String buffer

SYNOPSYS

use SPVM::StringBuffer;

# new
my $buffer = SPVM::StringBuffer->new;

# push string
$buffer->push("abc");
$buffer->push("def");

# Convert to string - abcdef
my $str = $buffer->to_str;

# Cat sub string - bcd
my $offset = 1;
my $length = 3;
my $substr = $buffer->substr($offset, $length);

# Search string
my $search = "cd";
my $start_pos = 1;
my $found_pos = $buffer->index($search, $start_pos);

# new with option
my $buffer = SPVM::StringBuffer->new_opt([(object)capacity => 256]);

DESCRIPTION

String buffer. Performance is better than concat operator when many strings is joined.

CLASS METHODS

new

sub new : SPVM::StringBuffer ()

Create new SPVM::StringBuffer object which capacity is 16 bytes without string

new_opt

sub new_opt : SPVM::StringBuffer ($options : object[])

Create new SPVM::StringBuffer object with options.

  • capacity : SPVM::Int

    Capacity of string buffer. Capacity must be more than 0.

INSTANCE METHODS

length

sub length : int ($self : self)

Get string length.

capacity

sub capacity : int ($self : self)

Get capacity of string buffer.

push

sub push  : void ($self : self, $string : string)

Push string to string buffer.

to_str

sub to_str : string ($self : self)

Convert string buffer to string.

substr

sub substr : string ($self : self, $offset : int, $length : int)

Get sub string.

index

sub index : int ($self : self, $search : string, $offset : int)

Search string. Return value is position of found string.

If string is not found, Return value is -1.

clear

sub clear : void ($self : self)

Clear string.