Concept Matrix

		Abstraction	AccessModifier	Allocation	Argument	Array	Assignment	Associativity	Boolean	Call	Class	Composition	Conditional	Constructor	ControlFlow	Coupling	Equality	Evaluation	Exception	Expression	Field	Function	GarbageCollection	Implementation	Inheritance	Input	Lifetime	Literal	Loop	Member	Method	Mutability	Name	Null	Number	Object	Operator	Output	Parameter	Polymorphism	Precedence	Primitive	Prototype	Recursion	Reference	Repetition	Return	Scope	Self	Sequence	Stack	Statement	Static	String	Subtyping	Term	Type	Undefined	Value	Variable
click numbers to filter	→	0	5	13	5	23	16	3	12	52	28	2	23	18	34	0	12	9	9	51	21	15	0	1	16	0	3	18	12	8	49	7	8	7	15	35	28	3	11	1	2	3	1	14	29	3	15	8	9	2	11	4	2	17	11	0	38	3	26	37
AbstractClassMustImplementAbstractMethod	3										⬤													⬤	⬤
AbstractClassNoImplementation	2										⬤														⬤
AccessingInexistentPropertyError	5																		⬤		⬤									⬤						⬤																						⬤
AddMemberAtRuntime	4			⬤							⬤										⬤										⬤
AllClassesHaveDefaultConstructor	2										⬤			⬤
AnyClassException	2										⬤								⬤
ArithmeticPlusPrecedes	5							⬤												⬤																	⬤				⬤													⬤
ArrayAccessWithParentheses	2					⬤																															⬤
ArrayAllocationWithoutNew	2			⬤		⬤
ArrayBracketCountIsLength	2			⬤		⬤
ArrayElementTypeRepeats	2					⬤																																																			⬤
ArrayElementsUntyped	2					⬤																																																			⬤
ArrayHasLengthMethod	3					⬤															⬤										⬤
ArrayInitializerContentsInBrackets	2					⬤																						⬤
ArrayLengthCannotBeZero	1					⬤
ArrayLengthPartOfType	2					⬤																																																			⬤
ArrayListIsArray	2					⬤					⬤
ArrayRankIsLength	1					⬤
ArrayRankNotPartOfType	2					⬤																																																			⬤
ArraysGrow	2			⬤		⬤
ArrowFunctionNoImpliedReturn	3																			⬤		⬤																									⬤
ArrowFunctionRequiresFunctionKeyword	2																			⬤		⬤
AssignCompares	4						⬤										⬤			⬤																	⬤
AssignCompares	4						⬤										⬤			⬤																	⬤
AssignmentCopiesObject	4						⬤																													⬤									⬤															⬤
AssignmentCopiesObject	4						⬤																													⬤									⬤															⬤
AssignmentCopiesObject	6			⬤			⬤																													⬤									⬤														⬤	⬤
AssignmentNotExpression	3						⬤													⬤																	⬤
BaseCaseNotNeeded	4									⬤			⬤																		⬤													⬤
BaseCaseNotNeeded	3									⬤			⬤																															⬤
BaseCaseSelfRecursive	3									⬤																					⬤													⬤
BoxedNull	4																											⬤						⬤		⬤									⬤
CallNotStaticallyChecked	4									⬤	⬤																				⬤																								⬤
CallOnPrimitive	3									⬤																					⬤											⬤
CallRequiresVariable	2									⬤																					⬤
CallWithoutFrame	3									⬤																					⬤																				⬤
CallbackParametersInCaller	5				⬤					⬤												⬤																	⬤																				⬤
CallerFrameContainsCalleeFormal	5									⬤																					⬤								⬤												⬤									⬤
CannotChainAttributeToObjectInstantiation	7									⬤				⬤						⬤	⬤									⬤	⬤						⬤
CannotChainMemberAccesses	6									⬤										⬤	⬤									⬤	⬤						⬤
CannotChainMemberToConstructor	7									⬤				⬤						⬤	⬤									⬤	⬤						⬤
CatchAlwaysExecutes	2														⬤				⬤
CatchProvidesOptions	2														⬤				⬤
ChainedMethodsNotCalledFromOutside	4									⬤										⬤											⬤					⬤
CharNotNumeric	3																																		⬤																			⬤			⬤
CharType	2																																																					⬤			⬤
ClassDefinesType	2										⬤																																														⬤
CompareBooleanToConstant	4								⬤								⬤			⬤																	⬤
ComparisonWithBoolLiteral	6								⬤								⬤	⬤		⬤								⬤									⬤
ComparisonWithBooleanLiteral	4								⬤								⬤			⬤																	⬤
CompositeExpressionsUntyped	2																			⬤																																					⬤
ConcreteClassMustOverride	3										⬤														⬤						⬤
ConcreteClassOnlyImplementClassAbstract	4										⬤														⬤						⬤																								⬤
ConcreteClassOnlyImplementDirectAbstract	4										⬤														⬤						⬤																								⬤
ConcreteClassOnlyImplementInterfaceAbstract	4										⬤														⬤						⬤																								⬤
ConditionOneOutEdge	2												⬤		⬤
ConditionalIsSequence	2												⬤		⬤
ConditionalIsSequence	2												⬤		⬤
ConditionalIsSequence	2												⬤		⬤
ConditionalOperatorNotExpression	4												⬤		⬤					⬤																	⬤
ConstDeclarationCanBeLeftUninitialized	2						⬤																																																					⬤
ConstReferenceImpliesImmutability	2																															⬤													⬤
ConstructorAllocates	3			⬤						⬤				⬤
ConstructorParameterIsField	3													⬤							⬤																		⬤
ConstructorReturnsObject	4			⬤						⬤				⬤																																	⬤
ConstructorWithoutNew	3			⬤						⬤				⬤
ControlledLocalAccess	4		⬤																								⬤																					⬤												⬤
DeferredReturn	4									⬤					⬤																⬤																⬤
DeferredReturn	4									⬤					⬤							⬤																									⬤
ElsIf	2												⬤		⬤
ElseAlwaysExecutes	2												⬤		⬤
ElseAlwaysExecutes	2												⬤		⬤
EqualityOperatorComparesListIdentities	5																⬤			⬤																⬤									⬤														⬤
EqualityOperatorComparesObjectsValues	6																⬤			⬤																⬤	⬤								⬤														⬤
EqualityOperatorComparesObjectsValues	5																⬤																			⬤	⬤								⬤														⬤
EqualityOperatorComparesOnlyTypes	4																⬤																				⬤																				⬤		⬤
EqualityOperatorComparesOnlyTypes	4																⬤																				⬤																				⬤		⬤
EqualsComparesReferences	6																⬤			⬤											⬤					⬤									⬤														⬤
EvaluationResultsArePrinted	2																	⬤																				⬤
ExceptionRoot	2																		⬤																																				⬤
ExpressionAssigns	3						⬤													⬤																																								⬤
ExpressionAssigns	3						⬤													⬤																																								⬤
ExpressionsDynamicallyTyped	4																	⬤		⬤																																					⬤		⬤
FinalReferenceImpliesImmutability	2																															⬤													⬤
ForEachIteratesOverIndices	3					⬤																							⬤																															⬤
ForEachTraversesRecursiveStructure	2																												⬤															⬤
ForEachVariableIsElement	3					⬤																							⬤																															⬤
ForIsConditional	3												⬤		⬤														⬤
ForVariableScopeBeyondLoop	3																												⬤																			⬤												⬤
FrameIsClassInstance	3									⬤																										⬤															⬤
FunctionAsValueWithParentheses	3									⬤												⬤																																					⬤
FunctionOverloading	3				⬤																	⬤																	⬤
FunctionsCannotBeImmediatelyInvoked	3									⬤												⬤																										⬤
FunctionsMustBeNamed	3																					⬤											⬤															⬤
IdentifierAsStringInBracketNotation	4																			⬤	⬤															⬤																		⬤
IfIsLoop	3												⬤		⬤														⬤
IfIsLoop	3												⬤		⬤														⬤
IfRequiresElse	2												⬤		⬤
ImmutableRequiresFinalParameters	5										⬤			⬤																	⬤	⬤							⬤
ImplicitInterfaceImplementation	3										⬤														⬤						⬤
InitCreates	3			⬤						⬤				⬤
InitReturnsObject	4			⬤						⬤				⬤																																	⬤
InlineCallInExpressionTree	2									⬤										⬤
InlineVariableInExpressionTree	2																			⬤																																								⬤
IntegerDivisionToRational	2																																		⬤																						⬤
InterfaceExtendClass	3										⬤														⬤																														⬤
InterproceduralEdge	3									⬤					⬤																⬤
LargeIntegerLong	4																			⬤								⬤							⬤																						⬤
ListLengthCannotBeZero	1					⬤
ListsHomogeneous	2					⬤																																																			⬤
LiteralNoExpression	2																			⬤								⬤
LiteralString	3				⬤																							⬤																										⬤
LocalVariablesAutoInitialized	3						⬤																																																				⬤	⬤
LoopBodyScopeImpliesLoopLifetime	4																										⬤		⬤																			⬤												⬤
LoopTerminatingCondition	3												⬤		⬤														⬤
MandatoryAssignment	3						⬤													⬤																																⬤
MapInPlace	2					⬤																																									⬤
MapIsMultiMap	0
MapPutNoOverwrite	0
MapToBooleanWithConditionalOperator	4								⬤				⬤							⬤																	⬤
MapToBooleanWithIf	3								⬤				⬤																																							⬤
MapToBooleanWithIf	4								⬤				⬤					⬤																																		⬤
MapToBooleanWithTernaryOperator	4								⬤				⬤							⬤																	⬤
MethodAsField	4										⬤										⬤										⬤					⬤
MethodWithoutReturnType	2																														⬤																										⬤
MethodsWithoutClass	2										⬤																				⬤
MissingElseTerminates	2												⬤		⬤
MultiReferenceVariable	3																																			⬤									⬤															⬤
MultiValueVariable	2																																																										⬤	⬤
MultidimensionalArray	1					⬤
MultipleSuperclasses	2										⬤																																												⬤
MultipleValuesReturn	3																					⬤																									⬤												⬤
MustInitializeFieldInConstructor	5						⬤							⬤							⬤																																						⬤	⬤
NamedTypeParameter	3																																⬤						⬤																		⬤
NestedObjectsImplyNestedClasses	2										⬤																									⬤
NestedPackages	0
NoAtomicExpression	4																			⬤								⬤									⬤																							⬤
NoAtomicExpression	4																			⬤								⬤									⬤																							⬤
NoAtomicExpression	4																			⬤								⬤									⬤																							⬤
NoBracketNotationForObjects	2																				⬤															⬤
NoCallOnStringLiteral	4									⬤																		⬤			⬤																							⬤
NoCastIfSameSize	4																																		⬤																						⬤		⬤	⬤
NoCharEscape	2																											⬤																										⬤
NoEmptyConstructor	1													⬤
NoEmptyInit	1													⬤
NoFieldInheritance	3										⬤										⬤															⬤
NoFieldlessObjects	2																				⬤															⬤
NoFloatLiterals	3																											⬤							⬤																						⬤
NoFunctionCallsChaining	4									⬤										⬤		⬤																			⬤
NoGlobalObject	2																																			⬤												⬤
NoImplicitWidening	1																																																								⬤
NoInsideMethodCallInConstructor	4									⬤				⬤																	⬤					⬤
NoJaggedArrays	1					⬤
NoLocalVariables	2																																																		⬤									⬤
NoLongLiterals	3																											⬤							⬤																						⬤
NoMethodInheritance	4										⬤										⬤				⬤						⬤
NoReservedWords	1																																⬤
NoReservedWords	1																																⬤
NoReturnValue	3																																														⬤											⬤	⬤
NoSequenceRepetition	4																																		⬤											⬤				⬤				⬤
NoShortCircuit	5								⬤						⬤			⬤		⬤																	⬤
NoShortCircuit	5								⬤						⬤			⬤		⬤																	⬤
NoSingleLogicAnd	2								⬤																												⬤
NoStringToString	3									⬤																					⬤																							⬤
NullAndUndefinedAreTheSame	5																⬤																	⬤																							⬤	⬤	⬤
NullIsObject	5																											⬤						⬤		⬤									⬤														⬤
NullIsObject	5																											⬤						⬤		⬤									⬤														⬤
NullPointerExceptionCompileTime	1																		⬤
NumberOfParametersMatchArguments	4				⬤					⬤												⬤																	⬤
NumericToBooleanCoercion	3								⬤																										⬤																						⬤
ObjectAsParameterIsCopied	4				⬤																															⬤			⬤						⬤
ObjectLabeledWithConstructorSignature	4									⬤				⬤																						⬤															⬤
ObjectLabeledWithVariableName	3																																⬤			⬤																								⬤
ObjectsMustBeNamed	5			⬤						⬤				⬤						⬤													⬤
ObjectsMustBeNamed	6			⬤						⬤				⬤						⬤													⬤			⬤
OnlyInnermostArrayElements	1					⬤
OnlyRuntimeLibraryPackages	1																																															⬤
OutOfBoundsElementsAreNull	2					⬤																												⬤
OutsideInFunctionNesting	5									⬤		⬤			⬤					⬤		⬤
OutsideInMethodNesting	5									⬤		⬤								⬤		⬤									⬤
ParenthesesOnlyIfArgument	3									⬤										⬤											⬤
ParenthesesOnlyIfArgument	3									⬤										⬤		⬤
PlusConcatenatesNumbers	5																			⬤															⬤		⬤													⬤				⬤
PreIncrementBeforeLoop	3														⬤														⬤								⬤
PrimitiveIsObject	3																																			⬤						⬤																	⬤
PrimitiveTypeParameter	3																																						⬤			⬤															⬤
PrimitiveVariablesDynamicallyTyped	2																																																								⬤		⬤
PrintNewLineFirst	1																																					⬤
PrivateAccessibleInSubclass	4																				⬤				⬤					⬤	⬤
PrivateFieldsImplyImmutability	4		⬤								⬤										⬤											⬤
PrivateFromOtherInstance	2		⬤																											⬤
PrivateFromStatic	3		⬤																											⬤																							⬤
PrivateMeansFinal	3		⬤																		⬤											⬤
PrototypesAreClasses	2										⬤																																⬤
RationalLiterals	2																											⬤							⬤
RecursiveActivationsShareFrame	2																																											⬤							⬤
RecursiveCallSiteNoReturn	2									⬤																																		⬤
RecursiveFunctionNeedsIfElse	3												⬤		⬤																													⬤
RecursiveMethodImpliesRecursiveType	3																														⬤													⬤													⬤
RecursiveMethodNeedsIfElse	4												⬤		⬤																⬤													⬤
ReferenceIntoStack	2																																												⬤						⬤
ReferenceLabeledWithDynamicType	4																																			⬤									⬤												⬤			⬤
ReferenceToBooleanCoercion	3								⬤																																				⬤												⬤
ReferenceToIntegerConversion	3																																		⬤										⬤												⬤
ReferenceToVariable	2																																												⬤															⬤
ReferringToRecursiveStructureMakesRecursive	2										⬤																																	⬤
RepeatDistributes	2														⬤														⬤
ResetStateEachLoopIteration	2														⬤														⬤
ResetStateEachProgramExecution	2																										⬤																																	⬤
ReturnCall	3									⬤																					⬤																⬤
ReturnCall	4									⬤								⬤				⬤																									⬤
ReturnNoOutEdge	2														⬤																																					⬤
ReturnUnwindsMultipleFrames	4									⬤																																		⬤			⬤				⬤
ReturnUnwindsMultipleFrames	4									⬤																																		⬤			⬤				⬤
RightToLeftChaining	7							⬤		⬤										⬤	⬤									⬤	⬤						⬤
RightToLeftChaining	7							⬤		⬤					⬤			⬤		⬤	⬤										⬤
RuntimeExceptionChecked	2																		⬤																																				⬤
SelfNoExpression	2																			⬤																													⬤
SemanticEquivalenceImpliesSyntacticEquivalence	0
SetTimeout0IsSynchronous	1									⬤
SetTimeoutReturnsCallbackResult	1																																														⬤
SetterIsStatic	2										⬤																				⬤
SingleQuoteString	2																											⬤																										⬤
StackTraceIsCallHistory	3									⬤																					⬤																				⬤
StatementMultipleOutEdges	2												⬤		⬤
StaticCallPolymorphic	5									⬤																					⬤								⬤	⬤																	⬤
StaticDispatch	4									⬤															⬤						⬤																								⬤
StaticFrameInGlobals	3									⬤																					⬤																				⬤
StringLengthField	3																				⬤										⬤																							⬤
StringLiteralNoObject	2																											⬤																										⬤
StringPlusStringifiesExpression	3																			⬤																	⬤																	⬤
StringRepetitionOperator	3																																		⬤											⬤								⬤
StringRepetitionOperator	3																																		⬤											⬤								⬤
SubtypeCompatibleWithSupertype	4																								⬤																				⬤										⬤		⬤
SuperAlwaysHasParentheses	2									⬤															⬤
SuperNotFirstStatement	2									⬤															⬤
SuperclassObjectAllocated	4			⬤							⬤														⬤											⬤
SupertypeIncompatibleWithSubtype	4																								⬤																				⬤										⬤		⬤
TargetTyping	3																			⬤															⬤																						⬤
ThisAsField	5																				⬤															⬤									⬤				⬤											⬤
ThisAssignable	6						⬤																									⬤				⬤									⬤				⬤											⬤
ThisAssignable	6						⬤																									⬤				⬤									⬤				⬤											⬤
ThisCanBeNull	3																																	⬤											⬤				⬤
ThisChildInCallExpression	4									⬤										⬤											⬤																		⬤
ThisExistsInStaticMethod	6																														⬤					⬤									⬤				⬤				⬤							⬤
ThisInConstructorIsNull	4													⬤																				⬤											⬤				⬤
ThisNoExpression	2																			⬤																													⬤
ToStringPrints	4																	⬤													⬤							⬤																⬤
TryCatchMandatory	2														⬤				⬤
TryFinishes	2														⬤				⬤
TypeofArrayIsArray	2					⬤																																																			⬤
TypeofNullIsNull	2																																																								⬤		⬤
UndeclaredVariables	1																																																											⬤
UnqualifiedNamesMustDiffer	3										⬤																						⬤															⬤
UntypedVariables	2																																																								⬤			⬤
UseOfSelfTypeImpliesRecursiveType	8										⬤																				⬤								⬤					⬤			⬤										⬤		⬤	⬤
VariablesHoldExpressions	3						⬤													⬤																																								⬤
VariablesHoldExpressions	4						⬤													⬤																																							⬤	⬤
VariablesHoldObjects	3																																			⬤									⬤															⬤
VariablesHoldObjects	4																																			⬤									⬤														⬤	⬤
VoidMethodNotRecursive	3																														⬤													⬤													⬤
VoidMethodReturnsValue	4																														⬤																⬤										⬤		⬤
ZeroDigitsCompress	1																																		⬤
ZeroInEdges	1														⬤
ZeroOutEdges	1														⬤

Concept Matrix
265 Misconceptions vs. 59 Concepts

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Concept Matrix265 Misconceptions vs. 59 Concepts

Find Misconceptions by...

About

Stay up-to-date

Concept Matrix
265 Misconceptions vs. 59 Concepts