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_string;
  
  # 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_string

  sub to_string : 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.

cpanm SPVM

perl -MCPAN -e shell
install SPVM