Example Directory ref 012

 

 

Description

The . (period) operator or the [ ] (brackets) operator are often used as shorthand to reference a Directory value or key.

 

Details

(setq dir #{dir|#Jan,1,1996 "New Year's Day" #Feb,14,1996 "Valentine's Day" } ) Returns: #<Directory 123456>

The bracket operator accesses the values of the Directory using the keys.

dir[#Jan,1,1996 ] Returns: New Year's Day
dir[#Feb,14,1996 ] Returns: Valentine's Day

The bracket function accesses the keys or values of the Directory using its indices.

dir[0 0] Returns: #Jan,1,1996
dir[0 1] Returns: New Year's Day
dir[1 0] Returns: #Feb,14,1996
dir[1 1] Returns: Valentine's Day

Notes and Hints

When a single index is used, the value portion of the specified binding is returned. However two indices offer the flexibility of referencing either the key or value. Here are additional examples using indices.

(define aDir #{dir| Name: "Bill" SSN: "616 55 1209" Age: 45} )

aDir[0 0] Returns:Age
aDir[0 1] Returns:45
aDir[1 0] Returns:Name
aDir[1 1] Returns:Bill
aDir[2 0] Returns:SSN
aDir[2 1] Returns:616 55 1209

 

Related Examples

Here are examples of the ref function at work.

BitVector ref 027 Boolean ref 018 Brick ref 036 Date ref 020
Dictionary ref 007 Dictionary ref 008 Dictionary ref 009 Directory ref 010
Directory ref 011 Directory ref 012 FltVector ref 022 Function ref 021
IntVector ref 023 Lambda ref 017 List ref 028 Matrix ref 015
Matrix ref 016 NumMatrix ref 035 NumVector ref 024 Number ref 019
ObjVector ref 025 ObjectRepository ref 030 ObjectRepository ref 031 ObjectRepository ref 032
ObjectRepository ref 033 ObjectRepository ref 034 PcodeVector ref 026 ShortVector ref 024
String ref 001 String ref 002 Structure ref 004 Structure ref 006
Symbol ref 003 Vector ref 013 Vector ref 014 Void ref 017

 

Function Links

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

ref

Here are a number of links to other related functions.

setq(#void) ref(#void) fieldsOf(#void) refValues(#void)

 

Argument Types

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

Directory Symbol String Integer

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

BitVector addMethod 023 BitVector compare 018 BitVector defmethod 020 BitVector findBlock 001
BitVector freeBlock 001 BitVector inside 007 BitVector isBitVector 001 BitVector isMember 008
BitVector isObject 012 BitVector isType 020 BitVector length 013 BitVector member 008
BitVector methodsOf 021 BitVector ref 027 BitVector resize 010 BitVector sizeof 019
BitVector vectorFill 007 Boolean addMethod 011 Boolean addMethod 012 Boolean bcompareEQ 001
Boolean bcompareGE 001 Boolean bcompareGT 001 Boolean bcompareLE 001 Boolean bcompareLT 001
Boolean bcompareNE 001 Boolean boolean 001 Boolean compare 009 Boolean defmethod 012
Boolean isBoolean 001 Boolean isType 011 Boolean methodsOf 012 Boolean send 010
Boolean sizeof 009 Brick addMethod 008 Brick defmethod 025 Brick methodsOf 024
Brick send 027 ByteVector isByteVector 001 ByteVector isCharAlphabetic 003 ByteVector isCharAlphanumeric 003
ByteVector isCharLowercase 003 ByteVector isCharName 003 ByteVector isCharNumeric 003 ByteVector isCharUppercase 003
ByteVector isCharWhitespace 003 ByteVector isObject 013 ByteVector sizeof 020 Character addMethod 013
Character cadd 001 Character ccompareEQ 001 Character ccompareGE 001 Character ccompareGT 001
Character ccompareLE 001 Character ccompareLT 001 Character ccompareNE 001 Character cdiv 001
Character character 001 Character cmod 001 Character cmul 001 Character compare 010
Character csub 001 Character defmethod 013 Character isCharacter 001 Character isType 012
Character methodsOf 013 Character send 011 Character sizeof 010 Complex compare 021
Complex cos 002 Complex exp 002 Complex expt 002 Complex log 002
Complex log10 002 Complex log2 002 Complex logbase 002 Complex sin 002
Complex sqrt 002 Complex tan 002 Context debug 001 Context debugBrowsableProcs 001
Context disassemble 001 Context getGlobalValue 001 Context getSymbolTable 001 Context globalBinding 001
CpxVector addMethod 028 CpxVector avg 002 CpxVector binaryInsert 008 CpxVector binarySearch 008
CpxVector compare 020 CpxVector compareEQ 020 CpxVector compareGE 020 CpxVector compareGT 020
CpxVector compareLE 020 CpxVector compareLT 020 CpxVector compareNE 020 CpxVector send 028
Date addMethod 015 Date addMethod 016 Date compare 012 Date date 001
Date day 001 Date days360 001 Date defmethod 015 Date hour 001
Date isType 014 Date julian 001 Date methodsOf 015 Date minute 001
Date month 001 Date second 001 Date send 013 Date sizeof 012
Date time 001 Date time 002 Date year 001 Dictionary addMethod 005
Dictionary binarySearch 002 Dictionary compare 004 Dictionary count 002 Dictionary defMethod 006
Dictionary delete 003 Dictionary delete 004 Dictionary insert 002 Dictionary inside 002
Dictionary isBound 002 Dictionary isDictionary 001 Dictionary isObject 004 Dictionary isType 006
Dictionary length 005 Dictionary member 002 Dictionary methodsOf 007 Dictionary new 004
Dictionary ref 007 Dictionary ref 008 Dictionary ref 009 Dictionary refAttributes 002
Dictionary refValues 002 Dictionary remove 002 Dictionary resize 002 Dictionary send 004
Dictionary setAttributes 002 Dictionary setq 007 Dictionary setq 008 Dictionary setq 009
Dictionary sizeof 004 Dictionary sort 003 Dictionary sort 005 Directory addMethod 006
Directory cdr 004 Directory compare 005 Directory compareEQ 005 Directory compareGE 005
Directory compareGT 005 Directory compareLE 005 Directory compareLT 005 Directory compareNE 005
Directory comparison functions 005 Directory copy 003 Directory count 003 Directory defMethod 007
Directory delete 005 Directory delete 006 Directory insert 003 Directory inside 003
Directory isAtom 003 Directory isBound 003 Directory isDirectory 001 Directory isEqual 003
Directory isIdentical 003 Directory isInside 003 Directory isMember 003 Directory isObject 005
Directory isType 007 Directory length 006 Directory map 003 Directory mapc 003
Directory member 002 Directory member 003 Directory methodsOf 008 Directory new 005
Directory new 006 Directory objectToDirectory 001 Directory objectToDirectory 002 Directory objectToDirectory 003
Directory objectToDirectory 004 Directory ref 010 Directory ref 011 Directory ref 012
Directory refAttributes 003 Directory refValues 003 Directory remove 003 Directory resize 003
Directory send 005 Directory setAttributes 003 Directory setCdr 003 Directory setq 010
Directory setq 011 Directory sizeof 005 Directory sort 007 Directory sort 008
Directory sort 009 Directory type 008 Directory vectorDelete 001 Error error 001
Error errorTrap 001 Error isError 001 Error onError 001 FileIO closeLog 001
FltVector addMethod 019 FltVector binaryInsert 004 FltVector compare 014 FltVector defmethod 017
FltVector delete 009 FltVector insert 005 FltVector isFloatVector 001 FltVector isObject 007
FltVector isType 016 FltVector length 008 FltVector methodsOf 017 FltVector ref 022
FltVector resize 006 FltVector sizeof 014 FltVector uniqueInsert 004 FltVector vectorFill 003
Function addMethod 017 Function addMethod 018 Function compare 013 Function defmethod 016
Function isType 015 Function methodsOf 016 Function send 014 Function sizeof 013
IntVector addMethod 020 IntVector binaryInsert 005 IntVector compare 015 IntVector defmethod 018
IntVector delete 010 IntVector insert 006 IntVector inside 005 IntVector isIntegerVector 001
IntVector isMember 005 IntVector isObject 008 IntVector isType 017 IntVector length 009
IntVector member 005 IntVector methodsOf 018 IntVector ref 023 IntVector resize 007
IntVector sizeof 015 IntVector uniqueInsert 005 IntVector vectorFill 004 Integer binaryNot 001
Integer bitwiseNot 001 Integer fact 001 Integer gcd 001 Integer iadd 001
Integer icompareGE 001 Integer icompareGT 001 Integer icompareLE 001 Integer icompareLT 001
Integer icompareNE 001 Integer idiv 001 Integer imod 001 Integer imul 001
Integer integer 001 Integer isub 001 Integer lcm 001 Lambda balance 001
Lambda debug 001 Lambda debugBrowsableProcs 001 Lambda defchild 001 Lambda define 001
Lambda define(macro) 001 Lambda defmacro 001 Lambda defmacro 002 Lambda deforphan 001
Lambda defriend 001 Lambda defun 001 Lambda defun 002 Lambda disassemble 001
Lambda exportTab 001 Lambda globalBinding 001 Lambda importTab 001 Lambda isLambda 001
Lambda ref 017 List addMethod 025 List count 007 List count 008
List defmethod 022 List length 015 List methodsOf 022 List send 020
List sizeof 022 Matrix addMethod 008 Matrix binaryInsert 004 Matrix binaryInsert 005
Matrix compare 007 Matrix count 005 Matrix defMethod 009 Matrix delete 009
Matrix insert 005 Matrix inside 005 Matrix isMatrix 001 Matrix isMember 005
Matrix isNumberMatrix 001 Matrix isObject 007 Matrix isType 009 Matrix length 008
Matrix makeGaussianMatrix 001 Matrix makeGramMatrix 001 Matrix matrixGaussianEliminate 001 Matrix matrixGaussianSubstitute 001
Matrix member 005 Matrix methodsOf 010 Matrix rank 001 Matrix ref 015
Matrix ref 016 Matrix resize 005 Matrix sizeof 007 Matrix uniqueInsert 004
Matrix vectorFill 002 NumMatrix addMethod 027 NumMatrix binaryInsert 007 NumMatrix compare 023
NumMatrix count 009 NumMatrix defmethod 024 NumMatrix delete 014 NumMatrix insert 009
NumMatrix inside 009 NumMatrix isMember 010 NumMatrix isNumberMatrix 001 NumMatrix isObject 014
NumMatrix isType 022 NumMatrix length 017 NumMatrix makeGaussianMatrix 001 NumMatrix makeGramMatrix 001
NumMatrix matrixGaussianEliminate 001 NumMatrix matrixGaussianSubstitute 001 NumMatrix member 009 NumMatrix methodsOf 024
NumMatrix rank 002 NumMatrix ref 035 NumMatrix resize 011 NumMatrix sizeof 028
NumMatrix uniqueInsert 005 NumMatrix vectorFill 008 NumVector addMethod 021 NumVector binaryInsert 006
NumVector compare 016 NumVector defmethod 019 NumVector delete 011 NumVector insert 007
NumVector inside 006 NumVector isMember 006 NumVector isNumberVector 001 NumVector isObject 009
NumVector isType 018 NumVector length 010 NumVector member 006 NumVector methodsOf 019
NumVector objectToNumVector 001 NumVector ref 024 NumVector resize 008 NumVector sizeof 016
NumVector uniqueInsert 006 NumVector vectorFill 005 Number addMethod 014 Number asin 001
Number atan 001 Number avg 001 Number compare 011 Number cos 001
Number cosh 001 Number defmethod 014 Number deg 001 Number exp 001
Number floor 001 Number isType 013 Number kurtosis 001 Number log 001
Number log10 001 Number log2 001 Number logbase 001 Number max 001
Number median 001 Number methodsOf 014 Number min 001 Number mod 001
Number modi 001 Number nadd 001 Number ncompareGE 001 Number ncompareGT 001
Number ncompareLE 001 Number ncompareLT 001 Number ndiv 001 Number nmod 001
Number nmul 001 Number nsub 001 Number number 001 Number pi 001
Number product 001 Number rad 001 Number random 001 Number randomize 001
Number range 001 Number round 001 Number send 012 Number sign 001
Number sin 001 Number sinh 001 Number sizeof 011 Number skew 001
Number sqrt 001 Number srandom 001 Number stdev 001 Number stdevp 001
Number sumsqr 001 Number tan 001 Number tanh 001 Number var 001
Number varp 001 ObjVector addMethod 022 ObjVector compare 017 ObjVector delete 012
ObjVector insert 008 ObjVector isMember 007 ObjVector isObject 010 ObjVector isObjectVector 001
ObjVector isType 019 ObjVector length 011 ObjVector member 007 ObjVector ref 025
ObjVector resize 009 ObjVector sizeof 017 ObjVector uniqueInsert 007 ObjVector vectorFill 006
ObjectRepository addMethod 026 ObjectRepository defmethod 023 ObjectRepository delete 013 ObjectRepository loadRepository 001
ObjectRepository methodsOf 023 ObjectRepository send 026 Pair addMethod 024 Pair compare 019
Pair compareEQ 019 Pair compareGE 019 Pair compareGT 019 Pair compareLE 019
Pair compareLT 019 Pair compareNE 019 Pair comparison 019 Pair count 006
Pair defmethod 021 Pair length 014 Pair methodsOf 021 Pair send 019
Pair sizeof 021 PcodeVector isObject 011 PcodeVector isPcodeVector 001 PcodeVector length 012
PcodeVector methodsOf 020 PcodeVector ref 026 PcodeVector sizeof 018 ShortVector addMethod 021
ShortVector binaryInsert 006 ShortVector compare 016 ShortVector defmethod 019 ShortVector delete 011
ShortVector insert 007 ShortVector inside 006 ShortVector isMember 006 ShortVector isObject 009
ShortVector isType 018 ShortVector length 010 ShortVector member 006 ShortVector methodsOf 019
ShortVector ref 024 ShortVector resize 008 ShortVector sizeof 016 ShortVector uniqueInsert 007
ShortVector vectorFill 005 String addMethod 001 String append 001 String append 002
String clean 001 String code 001 String compare 001 String compareEQ 001
String compareGE 001 String compareGT 001 String compareLE 001 String compareLT 001
String compareNE 001 String comparison functions 001 String defMethod 001 String defMethod 002
String downcase 001 String fileRead 001 String fileRead 002 String fileReadRecord 001
String fileWrite 001 String find 001 String find 002 String hashString 001
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 left 001 String length 001 String length 002 String methodsOf 001
String methodsOf 002 String methodsOf 003 String mid 001 String new 001
String parse 001 String ref 001 String ref 002 String replace 001
String rept 001 String right 001 String send 001 String setq 001
String sizeof 001 String string 001 String string 002 String string 003
String stringCiEQ 001 String stringCiGE 001 String stringCiGT 001 String stringCiLE 001
String stringCiLT 001 String stringCiNE 001 String stringFill 001 String stringToBVector 001
String stringToBVector 002 String stringToBVector 003 String stringToVector 001 String stringToVector 002
String stringToVector 003 String stringToVector 004 String substitute 001 String substitute 002
String substring 001 String substring 002 String substringCiEQ 001 String substringCiGE 001
String substringCiGT 001 String substringCiLE 001 String substringCiLT 001 String substringCiNE 001
String text 001 String trim 001 String type 001 String upcase 001
String upcase 002 String upcase 003 Structure addMethod 003 Structure addMethod 004
Structure apply 001 Structure apply 002 Structure binaryInsert 001 Structure binarySearch 001
Structure compareGE 003 Structure compareGT 003 Structure compareLE 003 Structure compareLT 003
Structure compareNE 003 Structure count 001 Structure defmethod 004 Structure defmethod 005
Structure defstruct 001 Structure delete 001 Structure delete 002 Structure insert 001
Structure inside 001 Structure isBound 001 Structure isInside 001 Structure isMember 001
Structure isObject 003 Structure length 004 Structure member 001 Structure methodsOf 005
Structure new 003 Structure ref 004 Structure ref 006 Structure refAttributes 001
Structure refValues 001 Structure remove 001 Structure resize 001 Structure send 003
Structure setAttributes 001 Structure setq 003 Structure setq 004 Structure setq 005
Structure setq 006 Structure sizeof 003 Structure uniqueInsert 001 Structure uniqueInsert 002
Symbol *< 001 Symbol ++ 001 Symbol +< 001 Symbol -- 001
Symbol -< 001 Symbol /< 001 Symbol addMethod 002 Symbol append 003
Symbol compare 002 Symbol compareEQ 002 Symbol compareGE 002 Symbol compareGT 002
Symbol compareLE 002 Symbol compareLT 002 Symbol compareNE 002 Symbol comparison functions 002
Symbol defMethod 003 Symbol downcase 002 Symbol getGlobalValue 001 Symbol getGlobalValue 002
Symbol getSymbolTable 001 Symbol getSymbolTable 002 Symbol hashString 002 Symbol isCharAlphabetic 002
Symbol isCharAlphanumeric 002 Symbol isCharLowercase 002 Symbol isCharName 002 Symbol isCharNumeric 002
Symbol isCharUppercase 002 Symbol isCharWhitespace 002 Symbol isObject 002 Symbol isSymbol 001
Symbol isType 004 Symbol length 003 Symbol makeQuotedSymbol 001 Symbol methodsOf 004
Symbol new 002 Symbol proplist 001 Symbol proprecord 001 Symbol putprop 001
Symbol ref 003 Symbol remProp 001 Symbol send 002 Symbol setq 001
Symbol setq 002 Symbol sizeof 002 Symbol symbol 001 Symbol symbol 002
Symbol type 002 Symbol upcase 004 Vector addMethod 007 Vector binaryInsert 002
Vector binaryInsert 003 Vector compare 006 Vector count 004 Vector defmethod 008
Vector delete 007 Vector delete 008 Vector insert 004 Vector inside 004
Vector isMember 004 Vector isObject 006 Vector isType 008 Vector isVector 001
Vector length 007 Vector member 004 Vector methodsOf 009 Vector objectToVector 001
Vector ref 013 Vector ref 014 Vector refAttributes 004 Vector refValues 004
Vector resize 004 Vector setAttributes 004 Vector setAttributes 005 Vector setBlock 001
Vector sizeof 006 Vector uniqueInsert 003 Vector vectorFill 001 Void addMethod 009
Void addMethod 010 Void compare 008 Void defmethod 010 Void defmethod 011
Void isType 010 Void methodsOf 011 Void ref 017 Void sizeof 008
substringEQ 001 substringFill 001 substringGE 001 substringGT 001
substringLE 001 substringLT 001 substringNE 001

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