Example BitVector copy 011




This example shows how a Vector may be modified destructively or non-destructively using the the copy and setq function.



The original Vector.

(define x #(bit| 1 1 1 1 1 )) Returns: #<BitVector 123456>

The copied Vector using the copy function.

(setq z (copy x)) Returns: #<BitVector 234567>

The copied Vector using the setq function.

(setq twin x) Returns: #<BitVector 345678>

The container named z is a copy of x (both are Vectors) and z has a separate memory space. However, the containers named x and twin point to the same memory spaces on the heap. Therefore

(setq twin[1] 3 ) Returns: #<BitVector 123456>

The setq command results in the contents of both twin and x being both the same.

twin[1] Returns: 3
x[1] Returns: 3

Since z points to a different memory space, it still retained the original value which was copied from x before the values of x were modified.

z[1] Returns: 1

Notes and Hints

Using the setq function results in objects having the same object id. But the object that is being assigned the copied object has a different object id than original object. In this example twin and x have the same object id while z has a different object id.


Related Examples

Here are examples of the copy function at work.

BitVector copy 011 Brick copy 012 CpxVector copy 013 Dictionary copy 002
Directory copy 003 FltVector copy 006 IntVector copy 007 List copy 010
Matrix copy 006 Matrix copy 007 NumMatrix copy 011 NumVector copy 008
ObjVector copy 009 Pair copy 009 PcodeVector copy 010 ShortVector copy 008
Structure copy 001 Vector copy 004 Vector copy 005


Function Links

Here is the link to the current function used in this example.


Here are a number of links to other related functions.



Argument Types

Here are the links to the data types of the arguments used in this example.


Here are a number of links to examples having similar argument types.

BitVector append 010 BitVector apply 008 BitVector bitToIntegerVector 001 BitVector bitToNumberVector 001
BitVector cdr 010 BitVector compare 018 BitVector compareEQ 014 BitVector compareGE 014
BitVector compareGT 014 BitVector compareLE 014 BitVector compareLT 014 BitVector compareNE 014
BitVector comparison 014 BitVector copy 011 BitVector defmethod 020 BitVector findBlock 001
BitVector freeBlock 001 BitVector isAtom 010 BitVector isBitVector 001 BitVector isEqual 017
BitVector isIdentical 017 BitVector isObject 012 BitVector isType 020 BitVector length 013
BitVector member 008 BitVector methodsOf 021 BitVector new 013 BitVector ref 027
BitVector remove 008 BitVector resize 010 BitVector reverse 007 BitVector send 018
BitVector setCdr 010 BitVector setLastCdr 010 BitVector setq 024 BitVector sizeof 019
BitVector sort 017 BitVector type 021 BitVector vectorFill 007 Dictionary isDictionary 001
IntVector bitToIntegerVector 002 NumVector bitToNumberVector 002 String isChar 001 String isCharAlphabetic 001
String isCharAlphanumeric 001 String isCharLowercase 001 String isCharName 001 String isCharNumeric 001
String isCharUppercase 001 String isCharWhitespace 001 String isEqual 001 String isEqual 002
String isObject 001 String isString 001 String isText 001 String isType 001
String isType 002 String isType 003 String sizeof 001 String string 001
String string 002 String string 003 String type 001 Symbol isCharName 002
Symbol isCharNumeric 002 Symbol isObject 002 Symbol isSymbol 001 Symbol isType 004
Symbol sizeof 002 Symbol type 002 Vector setBlock 001

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