Buffer:append(var, [encoding]) method

Append binary data to the Buffer with the specified content.

Parameters

var

A variable used to append data the Buffer. Only number, string and table values are permitted with the following behavior :

• number : Append the Buffer with the specified size. All the appended bytes are initialized to zero.
• string : Append the Buffer with the specified string. An optional encoding argument can specify how to interpret the string (see below)
• table : Append the Buffer with the specified table. The table must contain only sequential byte values (for example { 20, 33, 75 })

encoding

An optional string used to specify the encoding when appending the Buffer with a string value :

• "utf8" : Append the Buffer with a UTF8 string encoding, or as raw binary data (default)
• "unicode" : Append the Buffer with an UNICODE (UCS-2 LE) encoded string
• "base64" : Append the Buffer with a base64 encoded string
• "hex" : Append the Buffer with a hexadecimal encoded string

Return value

Returns no value.

Example