onError

 

 

Description

The onError special form assigns an error event handler function {anLambda}. The scope of the onError special form is limited to the scope of the current executing Lambda. Any error events, occurring during the scope of the current executing Lambda, will result in the specified error event handler Lambda being invoked.

The specified error event handler Lambda, {anLambda}, must be a function of one argument. The error event is converted into a text object and passed to the error event handler function.

When to use

The onError function is used to define an error handler function.

 

Syntax

(onError anLambda)



Name Description AIS Types
anLambda The event handler Lambda. The specified error event handler Lambda (anLambda) must be a function of one argument. Lambda


Returns:

Returns false if the object has a value of 0. Returns true otherwise.

 

Examples

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

Example_Error_onError_001

The onError function defines the error handler errHandler.

 

Argument Types

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

Lambda Boolean

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

abortTransaction(ObjectRepository) addMethod(BitVector) addMethod(Boolean) addMethod(Brick)
addMethod(Character) addMethod(CpxVector) addMethod(Date) addMethod(Dictionary)
addMethod(Directory) addMethod(FltVector) addMethod(Function) addMethod(IntVector)
addMethod(List) addMethod(Matrix) addMethod(NumMatrix) addMethod(NumVector)
addMethod(Number) addMethod(ObjVector) addMethod(ObjectRepository) addMethod(Pair)
addMethod(PcodeVector) addMethod(ShortVector) addMethod(String) addMethod(Structure)
addMethod(Symbol) addMethod(Vector) addMethod(Void) argCount(Lambda)
argFetch(Lambda) attachLibrarian(ObjectRepository) badd(Boolean) balance(Lambda)
bcompareEQ(Boolean) bcompareGE(Boolean) bcompareGT(Boolean) bcompareLE(Boolean)
bcompareLT(Boolean) bcompareNE(Boolean) bdiv(Boolean) beginTransaction(ObjectRepository)
binaryInsert(CpxVector) binaryInsert(FltVector) binaryInsert(IntVector) binaryInsert(Matrix)
binaryInsert(NumMatrix) binaryInsert(NumVector) binaryInsert(ShortVector) binaryInsert(Structure)
binaryInsert(Vector) binaryNand(Integer) binaryNor(Integer) binaryNot(Integer)
binaryNxor(Integer) binarySearch(CpxVector) binarySearch(Dictionary) binarySearch(FltVector)
binarySearch(IntVector) binarySearch(Matrix) binarySearch(NumMatrix) binarySearch(NumVector)
binarySearch(ObjVector) binarySearch(ShortVector) binarySearch(Structure) binarySearch(Vector)
bitwiseAnd(Integer) bitwiseNand(Integer) bitwiseNor(Integer) bitwiseNot(Integer)
bitwiseNxor(Integer) bitwiseOr(Integer) bitwiseShiftLeft(Integer) bitwiseShiftRight(Integer)
bitwiseXor(Integer) bmod(Boolean) bmul(Boolean) boolean(Boolean)
callcc(Lambda) ccompareEQ(Character) ccompareGE(Character) ccompareGT(Character)
ccompareLE(Character) ccompareLT(Character) ccompareNE(Character) character(Character)
checkPointTransaction(ObjectRepository) clear(Context) clear(ObjectRepository) commitTransaction(ObjectRepository)
compareEQ(BitVector) compareEQ(Boolean) compareEQ(Brick) compareEQ(Character)
compareEQ(Complex) compareEQ(CpxVector) compareEQ(Date) compareEQ(Dictionary)
compareEQ(Directory) compareEQ(FltVector) compareEQ(Function) compareEQ(IntVector)
compareEQ(Lambda) compareEQ(List) compareEQ(Matrix) compareEQ(NumMatrix)
compareEQ(NumVector) compareEQ(Number) compareEQ(ObjVector) compareEQ(ObjectRepository)
compareEQ(Pair) compareEQ(ShortVector) compareEQ(String) compareEQ(Structure)
compareEQ(Symbol) compareEQ(Vector) compareEQ(Void) compareGE(BitVector)
compareGE(Boolean) compareGE(Brick) compareGE(Character) compareGE(Complex)
compareGE(CpxVector) compareGE(Date) compareGE(Dictionary) compareGE(Directory)
compareGE(Function) compareGE(IntVector) compareGE(Lambda) compareGE(List)
compareGE(Matrix) compareGE(NumMatrix) compareGE(Number) compareGE(ObjVector)
compareGE(ObjectRepository) compareGE(Pair) compareGE(ShortVector) compareGE(String)
compareGE(Structure) compareGE(Symbol) compareGE(Vector) compareGE(Void)
compareGT(BitVector) compareGT(Boolean) compareGT(Brick) compareGT(Character)
compareGT(Complex) compareGT(CpxVector) compareGT(Date) compareGT(Dictionary)
compareGT(Directory) compareGT(Function) compareGT(IntVector) compareGT(Lambda)
compareGT(List) compareGT(Matrix) compareGT(NumMatrix) compareGT(NumVector)
compareGT(Number) compareGT(ObjVector) compareGT(ObjectRepository) compareGT(Pair)
compareGT(ShortVector) compareGT(String) compareGT(Structure) compareGT(Symbol)
compareGT(Vector) compareGT(Void) compareLE(BitVector) compareLE(Boolean)
compareLE(Brick) compareLE(Character) compareLE(Complex) compareLE(CpxVector)
compareLE(Date) compareLE(Dictionary) compareLE(Directory) compareLE(FltVector)
compareLE(Function) compareLE(IntVector) compareLE(Lambda) compareLE(List)
compareLE(Matrix) compareLE(NumMatrix) compareLE(NumVector) compareLE(Number)
compareLE(ObjVector) compareLE(ObjectRepository) compareLE(Pair) compareLE(ShortVector)
compareLE(String) compareLE(Structure) compareLE(Symbol) compareLE(Vector)
compareLE(Void) compareLT(BitVector) compareLT(Boolean) compareLT(Brick)
compareLT(Character) compareLT(Complex) compareLT(CpxVector) compareLT(Date)
compareLT(Dictionary) compareLT(Directory) compareLT(FltVector) compareLT(Function)
compareLT(IntVector) compareLT(Lambda) compareLT(List) compareLT(Matrix)
compareLT(NumMatrix) compareLT(NumVector) compareLT(Number) compareLT(ObjVector)
compareLT(ObjectRepository) compareLT(Pair) compareLT(ShortVector) compareLT(String)
compareLT(Structure) compareLT(Symbol) compareLT(Vector) compareLT(Void)
compareNE(BitVector) compareNE(Boolean) compareNE(Brick) compareNE(Character)
compareNE(Complex) compareNE(CpxVector) compareNE(Date) compareNE(Dictionary)
compareNE(Directory) compareNE(FltVector) compareNE(Function) compareNE(IntVector)
compareNE(Lambda) compareNE(List) compareNE(Matrix) compareNE(NumMatrix)
compareNE(NumVector) compareNE(Number) compareNE(ObjVector) compareNE(ObjectRepository)
compareNE(Pair) compareNE(ShortVector) compareNE(String) compareNE(Structure)
compareNE(Symbol) compareNE(Vector) compareNE(Void) compare(BitVector)
compare(Boolean) compare(Brick) compare(Character) compare(Complex)
compare(CpxVector) compare(Date) compare(Dictionary) compare(Directory)
compare(FltVector) compare(Function) compare(IntVector) compare(Lambda)
compare(List) compare(Matrix) compare(NumMatrix) compare(NumVector)
compare(Number) compare(ObjVector) compare(ObjectRepository) compare(Pair)
compare(ShortVector) compare(String) compare(Structure) compare(Symbol)
compare(Vector) compare(Void) comparison(BitVector) comparison(Boolean)
comparison(Brick) comparison(Character) comparison(Complex) comparison(Date)
comparison(Dictionary) comparison(Directory) comparison(FltVector) comparison(Function)
comparison(IntVector) comparison(List) comparison(Matrix) comparison(NumMatrix)
comparison(NumVector) comparison(Number) comparison(ObjVector) comparison(ObjectRepository)
comparison(Pair) comparison(ShortVector) comparison(String) comparison(Structure)
comparison(Symbol) comparison(Vector) comparison(Void) compile(Lambda)
compile(List) cons(Pair) copy(BitVector) copy(Brick)
copy(CpxVector) copy(Dictionary) copy(Directory) copy(FltVector)
copy(IntVector) copy(Lambda) copy(List) copy(Matrix)
copy(NumMatrix) copy(NumVector) copy(ObjVector) copy(Pair)
copy(PcodeVector) copy(ShortVector) copy(Structure) copy(Vector)
debugBrowsableProcs(Context) debugBrowsableProcs(Lambda) debug(Context) debug(Lambda)
defchild(Lambda) define(macro)(Lambda) define(Lambda) defmacro(Lambda)
deforphan(Lambda) defriend(Lambda) defun(Lambda) detachLibrarian(ObjectRepository)
disassemble(Context) disassemble(Lambda) display(ByteVector) display(FileIO)
evalInSyncLocalContext(Context) eval(Lambda) eval(List) exportTab(Lambda)
exportTab(ObjectRepository) fdisplay(ByteVector) fdisplay(Text) fileClose(ByteVector)
fileClose(Text) fileDisplay(ByteVector) fileDisplay(Text) fileErase(ByteVector)
fileErase(Text) fileOpen(ByteVector) fileOpen(Text) fileRead(ByteVector)
fileRead(Text) fileWrite(ByteVector) fileWrite(String) fileWrite(Text)
filewriteln(ByteVector) filewriteln(String) filewriteln(Text) findBlock(BitVector)
gc(Context) globalBinding(Context) globalBinding(Lambda) icompareEQ(Integer)
icompareGE(Integer) icompareGT(Integer) icompareLE(Integer) icompareLT(Integer)
icompareNE(Integer) importTab(Lambda) importTab(ObjectRepository) inside(BitVector)
inside(Dictionary) inside(Directory) inside(IntVector) inside(List)
inside(Matrix) inside(NumMatrix) inside(NumVector) inside(ShortVector)
inside(Structure) inside(Vector) inspect(Context) inspect(Lambda)
inspect(ObjectRepository) integer(Integer) isAtom(BitVector) isAtom(Brick)
isAtom(Dictionary) isAtom(Directory) isAtom(FltVector) isAtom(IntVector)
isAtom(List) isAtom(Matrix) isAtom(NumMatrix) isAtom(NumVector)
isAtom(ObjVector) isAtom(Pair) isAtom(PcodeVector) isAtom(ShortVector)
isAtom(Structure) isAtom(Vector) isBitVector(BitVector) isBoolean(Boolean)
isBound(Dictionary) isBound(Directory) isBound(Structure) isByteVector(ByteVector)
isCharAlphabetic(ByteVector) isCharAlphabetic(String) isCharAlphabetic(Symbol) isCharAlphanumeric(ByteVector)
isCharAlphanumeric(String) isCharAlphanumeric(Symbol) isCharLowercase(ByteVector) isCharLowercase(String)
isCharLowercase(Symbol) isCharName(ByteVector) isCharName(String) isCharName(Symbol)
isCharNumeric(ByteVector) isCharNumeric(String) isCharNumeric(Symbol) isCharUppercase(ByteVector)
isCharUppercase(String) isCharUppercase(Symbol) isCharWhitespace(ByteVector) isCharWhitespace(String)
isCharWhitespace(Symbol) isCharacter(Character) isComplex(Complex) isDate(Date)
isDirectory(Directory) isEqual(BitVector) isEqual(Boolean) isEqual(Brick)
isEqual(Character) isEqual(Complex) isEqual(Date) isEqual(Dictionary)
isEqual(Directory) isEqual(FltVector) isEqual(Function) isEqual(IntVector)
isEqual(List) isEqual(Matrix) isEqual(NumMatrix) isEqual(NumVector)
isEqual(Number) isEqual(ObjVector) isEqual(Pair) isEqual(ShortVector)
isEqual(String) isEqual(Structure) isEqual(Vector) isEqual(Void)
isError(Error) isEven(Number) isExact(Number) isFloatVector(FltVector)
isIdentical(BitVector) isIdentical(Boolean) isIdentical(Brick) isIdentical(Character)
isIdentical(Complex) isIdentical(Date) isIdentical(Dictionary) isIdentical(Directory)
isIdentical(Error) isIdentical(FltVector) isIdentical(Function) isIdentical(IntVector)
isIdentical(List) isIdentical(Matrix) isIdentical(NumMatrix) isIdentical(NumVector)
isIdentical(Number) isIdentical(ObjVector) isIdentical(ObjectRepository) isIdentical(Pair)
isIdentical(PcodeVector) isIdentical(ShortVector) isIdentical(Structure) isIdentical(Vector)
isIdentical(Void) isImmediate(ObjectRepository) isInexact(Number) isInside(BitVector)
isInside(Dictionary) isInside(Directory) isInside(IntVector) isInside(List)
isInside(Matrix) isInside(NumMatrix) isInside(NumVector) isInside(ObjVector)
isInside(Pair) isInside(ShortVector) isInside(Structure) isInside(Vector)
isIntegerVector(IntVector) isInteger(Integer) isMatrix(Matrix) isMember(BitVector)
isMember(Dictionary) isMember(Directory) isMember(IntVector) isMember(List)
isMember(Matrix) isMember(NumMatrix) isMember(NumVector) isMember(ObjVector)
isMember(Pair) isMember(ShortVector) isMember(Structure) isMember(Vector)
isMoney(Number) isNegative(Number) isNull(Number) isNull(Void)
isNumberMatrix(NumMatrix) isNumberVector(NumVector) isNumber(Number) isObjectVector(ObjVector)
isObject(BitVector) isObject(Brick) isObject(ByteVector) isObject(Dictionary)
isObject(Directory) isObject(FltVector) isObject(IntVector) isObject(List)
isObject(Matrix) isObject(NumMatrix) isObject(NumVector) isObject(ObjVector)
isObject(Pair) isObject(PcodeVector) isObject(ShortVector) isObject(String)
isObject(Structure) isObject(Symbol) isObject(Vector) isOdd(Number)
isPair(List) isPair(Pair) isPcodeVector(PcodeVector) isPositive(Number)
isTransaction(ObjectRepository) isType(BitVector) isType(Boolean) isType(Brick)
isType(Character) isType(Complex) isType(Date) isType(Dictionary)
isType(Directory) isType(FltVector) isType(Function) isType(IntVector)
isType(Matrix) isType(NumMatrix) isType(NumVector) isType(Number)
isType(ObjVector) isType(ObjectRepository) isType(Pair) isType(ShortVector)
isType(String) isType(Structure) isType(Symbol) isType(Vector)
isType(Void) isVector(Vector) isZero(Number) lambda(Lambda)
length(BitVector) length(Brick) length(Dictionary) length(Directory)
length(FltVector) length(IntVector) length(List) length(Matrix)
length(NumMatrix) length(NumVector) length(ObjVector) length(ObjectRepository)
length(Pair) length(PcodeVector) length(ShortVector) length(String)
length(Structure) length(Symbol) length(Vector) lisp(Lambda)
lisp(List) list(List) loadWorkspace(Context) macroReplace(String)
makeLambda(Lambda) makeQuotedList(List) member(BitVector) member(Dictionary)
member(Directory) member(IntVector) member(List) member(Matrix)
member(NumMatrix) member(NumVector) member(ObjVector) member(ShortVector)
member(Structure) member(Vector) money(Number) morph(List)
myself(Lambda) ncompareEQ(Number) ncompareGE(Number) ncompareGT(Number)
ncompareLE(Number) ncompareLT(Number) ncompareNE(Number) new(BitVector)
new(Brick) new(ByteVector) new(CpxVector) new(Dictionary)
new(Directory) new(FltVector) new(IntVector) new(Lambda)
new(Matrix) new(NumMatrix) new(NumVector) new(ObjVector)
new(ObjectRepository) new(PcodeVector) new(ShortVector) new(String)
new(Structure) new(Symbol) new(Vector) number(Number)
onError(Error) onError(Lambda) pair(Pair) refLibrarian(ObjectRepository)
ref(BitVector) ref(Boolean) ref(Brick) ref(Character)
ref(Complex) ref(Date) ref(Dictionary) ref(Directory)
ref(FltVector) ref(Function) ref(IntVector) ref(Lambda)
ref(List) ref(Matrix) ref(NumMatrix) ref(NumVector)
ref(Number) ref(ObjVector) ref(ObjectRepository) ref(PcodeVector)
ref(ShortVector) ref(String) ref(Structure) ref(Symbol)
ref(Vector) ref(Void) remove(BitVector) remove(Dictionary)
remove(Directory) remove(IntVector) remove(Matrix) remove(NumMatrix)
remove(NumVector) remove(ObjVector) remove(ShortVector) remove(Structure)
remove(Vector) rename(ObjectRepository) reset(Context) saveObject(ByteVector)
saveObject(Integer) saveWorkspace(Context) send(BitVector) send(Boolean)
send(Brick) send(Character) send(CpxVector) send(Date)
send(Dictionary) send(Directory) send(FltVector) send(Function)
send(IntVector) send(Lambda) send(List) send(Matrix)
send(NumMatrix) send(NumVector) send(Number) send(ObjectRepository)
send(Pair) send(ShortVector) send(String) send(Structure)
send(Symbol) send(Vector) send(Void) setBlock(BitVector)
setCar(List) setCar(Pair) set(ObjectRepository) setf(ObjectRepository)
setq(BitVector) setq(Boolean) setq(Brick) setq(Character)
setq(Date) setq(Dictionary) setq(Directory) setq(FltVector)
setq(IntVector) setq(Lambda) setq(List) setq(Matrix)
setq(NumVector) setq(Number) setq(ObjVector) setq(ObjectRepository)
setq(PcodeVector) setq(ShortVector) setq(String) setq(Structure)
setq(Symbol) setq(Vector) setq(Void) sizeof(BitVector)
sizeof(Boolean) sizeof(Brick) sizeof(ByteVector) sizeof(Character)
sizeof(Complex) sizeof(Date) sizeof(Dictionary) sizeof(Directory)
sizeof(FltVector) sizeof(Function) sizeof(IntVector) sizeof(List)
sizeof(Matrix) sizeof(NumMatrix) sizeof(NumVector) sizeof(Number)
sizeof(ObjVector) sizeof(ObjectRepository) sizeof(Pair) sizeof(PcodeVector)
sizeof(ShortVector) sizeof(String) sizeof(Structure) sizeof(Symbol)
sizeof(Vector) sizeof(Void) sort(BitVector) sort(Dictionary)
sort(Directory) sort(FltVector) sort(IntVector) sort(List)
sort(Matrix) sort(NumMatrix) sort(NumVector) sort(ObjVector)
sort(ShortVector) sort(Structure) sort(Vector) stringCiEQ(String)
stringCiGE(String) stringCiGT(String) stringCiLE(String) stringCiLT(String)
stringCiNE(String) subscribe(Context) substringCiEQ(String) substringCiGE(String)
substringCiGT(String) substringCiLE(String) substringCiLT(String) substringCiNE(String)
substringEQ(String) substringGE(String) substringGT(String) substringLE(String)
substringLT(String) substringNE(String) systemCheck(Context) vectorFill(BitVector)
vectorFill(FltVector) vectorFill(IntVector) vectorFill(Matrix) vectorFill(NumMatrix)
vectorFill(NumVector) vectorFill(ObjVector) vectorFill(ShortVector) vectorFill(Vector)
version(Context) writeln(ByteVector) writeln(String) writeln(Text)

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