isSymbol

 

 

Overview

The isSymbol Function returns true if the argument {obj} is a Symbol; otherwise, false is returned.

Usage

The isSymbol function is used to query an object to see if it is of type Symbol. An alternate method would be to use the isType function using the Type argument as type Symbol.

 

Syntax

Expression:

(isSymbol obj)


Arguments Name Type Description
Argument:objCharacter, String, Symbol, Vector, BitVector, ByteVector, IntVector, FltVector, ObjVector, Structure, Dictionary, Directory, Matrix, NumMatrix, Integer, Float, Number, Complex An Analytic Information Server object

Returns:

If the object is type Symbol, true is returned. Otherwise false is returned


 

Examples

Here are a number of links to Lambda coding examples which contain this instruction in various use cases.

 

Argument Types

Here are the links to the data types of the function arguments.

Character String Symbol Vector
BitVector ByteVector IntVector FltVector
ObjVector Structure Dictionary Directory
Matrix NumMatrix Integer Float
Number Complex

Here are also a number of links to functions having arguments with any of these data types.

++ += + /=
/ *= * --
-= - abs acos
add1 addMethod addi appendWriteln
append apply argument arithmetic
asin atan avg badd
balance bdiv binaryInsert binaryNand
binaryNor binaryNot binaryNxor binarySearch
bitToIntegerVector bitToNumberVector bitwiseAnd bitwiseNand
bitwiseNor bitwiseNot bitwiseNxor bitwiseOr
bitwiseShiftLeft bitwiseShiftRight bitwiseXor bmod
bmul boolean cadd ccompareEQ
ccompareGE ccompareGT ccompareLE ccompareLT
ccompareNE cdiv cdr char
character class clean closeLog
cmod cmul code compareEQ
compareGE compareGT compareLE compareLT
compareNE compare comparison complex
compress conjugate cons copy
cos cosh count csub
date day days360 debugBrowsableProcs
debugDetective debugEval debug decode
defchild defclass define(macro) defineStructure
define defmacro defmethod deforphan
defriend defstruct defun deg
deleteRows delete dimension disassemble
display divi downcase encode
evalInSyncLocalContext eval exit exp
exportCsv exportSbf exportTab expt
fact fdisplay fieldsOf fileClose
fileCopy fileDir fileDisplay fileEraseDir
fileErase fileExists fileMakeDir fileOpen
fileReadAll fileReadRecord fileRead fileResize
fileSeek fileSizeOf fileWriteAll fileWrite
filewriteln findBlock find floor
fraction freeBlock gc gcd
getGlobalValue getRecursionCount getSymbolTable getTickCount
globalBinding hashString hour iadd
icompareEQ icompareGE icompareGT icompareLE
icompareLT icompareNE idiv imaginary
imod importCsv importSbf importTab
imul insertRows insert inside
inspect integer isAtom isBitVector
isBoolean isBound isByteVector isCharAlphabetic
isCharAlphanumeric isCharLowercase isCharName isCharNumeric
isCharUppercase isCharWhitespace isChar isCharacter
isClass isComplex isDate isDictionary
isDirectory isEqual isError isEven
isExact isFloatVector isIdentical isInexact
isInside isIntegerVector isInteger isLambda
isMatrix isMember isMoney isNegative
isNull isNumberMatrix isNumberVector isNumber
isObjectVector isObject isOdd isPair
isPcodeVector isPositive isString isStructure
isSymbol isText isType isVector
isZero isub julian kurtosis
lcm left length list
loadModule loadObject loadRepository loadWorkspace
lock log10 log2 log
logbase macroReplace makeDictionary makeGaussianMatrix
makeGramMatrix makeQuotedList makeQuotedSymbol makeStructure
map mapc matrixGaussianEliminate matrixGaussianSubstitute
max median member methodsOf
mid min minute mod
modi money month muli
nadd ncompareEQ ncompareGE ncompareGT
ncompareLE ncompareLT ncompareNE ndiv
new nmod nmul now
nsub number objectToDictionary objectToDirectory
objectToList objectToMatrix objectToNumMatrix objectToNumVector
objectToStructure objectToVector offset openLog
pair parent parse pi
pointer preAllocateFixedMemoryBlocks product proplist
proprecord putprop qt rad
random randomize range rank
real refAttributes refValues ref
remProp remove rename replace
rept resize reverse right
round run saveImmediate saveModule
saveObject saveRepository saveWorkspace second
send setAttributes setBlock setCar
setCdr setLastCdr set setf
setq sigmoid sign sin
sinh sizeof skew sleep
sort sql sqrt srandom
stdev stdevp stringCiEQ stringCiGE
stringCiGT stringCiLE stringCiLT stringCiNE
stringFill stringToBVector stringToVector string
sub1 subi submit substitute
substringCiEQ substringCiGE substringCiGT substringCiLE
substringCiLT substringCiNE substringEQ substringFill
substringGE substringGT substringLE substringLT
substringNE substring sum sumsqr
super svmRegression symbolToTypeCode symbol
system tan tanh text
time trim type uncompress
uniqueInsert unlock upcase var
varp vectorBinaryInnerProduct vectorBipolarInnerProduct vectorCosineInnerProduct
vectorCubeInnerProduct vectorDelete vectorExpInnerProduct vectorFill
vectorInnerProduct vectorLogInnerProduct vectorQuartInnerProduct vectorQuintInnerProduct
vectorSigmoidInnerProduct vectorSineInnerProduct vectorSquareInnerProduct vectorTanInnerProduct
vectorTanhInnerProduct writelg writeln year

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