Jump to navigation Jump to search


4,627 bytes added, 20 May
→‎Lower-priority issues: Update bug #52614.
This page is a stub. We should begin documenting what classdef is implemented and what is not.=== Supported Features ===
==== not supported Properties ====
* enumerationClassdef properties are supported but not all attributes are implemented.
* build-in {| class as superclass ** <source lang="octavewikitable" enclose|-! style="nonetext-align:left;">classdef nonsense < uint32</source>| Attribute! Support! Notes|-|AbortSet|No|Property does not exist.|-|Abstract|Yes||-|Access|Partial||-|Constant|Yes||-|Dependent|Partial||-|GetAccess|Partial||-|GetObservable|No|Property exists but is not used. Requires events and listeners to be implemented in order to work properly.|-|Hidden|Yes||-|NonCopyable|No|Property does not exist.|-|SetAccess|Partial||-|SetObservable|No|Property exists but is not used. Requires events and listeners to be implemented in order to work properly.|-|Transient|No|Property exists but is not used.|}
* [ concatenating objects] into [ array of objects]. Example:<source lang="octave">classdef MyClass < handleend=== Methods ====
c = MyClass();cc = [c, c]; % won't work</source>Classdef methods are supported but not all attributes are fully implemented.
For now you can use a cell{| class="wikitable"|-array of objects instead:<source lang! style="octavetext-align:left;">| Attribute! Support! Notes|-|Abstract|Partialcc = |See bug report {{c, cbug|51377}; % ok}|-|Access|Yes||-|Hidden|Yes||-|Sealed|Yes||-|Static|Yes|</source>|}
* [ Immutable property] set access. Example:<source lang="octave">classdef MyClass < handle properties (SetAccess = immutable) x end methods function obj = MyClass() x Features that are not implemented === rand(); end endend</source>
Use "private" properties as workaround.==== enumeration ====
* Function handles Octave should be able to package methods and static class methods.For example if we have <code>+mypackage/myfunc.m</code>, creating parse the enumeration section of a function handle as <code>fh = @mypackageclassdef definition but nothing is done with it.myfunc</code> won't work.As a workaround, we can create an indirection using an anonymous function <code>fh = @(varargin) mypackage.myfunc(varargin Progress on this feature is tracked in bug report {{:bug|44582}})</code>.Similarly for static class methods where <code>fh = @MyClass.myfunc</code> isn't yet supported.
* Defining [ events and-functions.html#br2la89 local functions] in the same classdef-file is not working. For example, the following code gives a syntax/parse error:<source langlisteners ==="octave">classdef MyClass methods function obj = MyClass() myfunc() end endend
function myfunc() disp('myfunc')end</source>Octave should be able to parse the events section of a classdef definition but nothing is done with it. Progress on this feature is tracked in bug report {{bug|56194}}.
* debugging in classdef methods (and +package directory functions)=== Open Bug Reports for Other Issues ===
Breakpoints cannot currently be set in ==== Issues with basic classdef methods (or at least they are ignored). They also can't be set in functions in +package directories (which is a related issue).functionality ====
* [ 51659] Calling 'methods' on self causes syntax error* [ 48682] print_usage fails within classdef block* [ 49434] which returns "built-in function" for classdef m-file* [ 48041] classdef: `help myclass` messes up `help @myclass/method`* [ 43047] help() does not see classdef files* [ 42620] exist() does not use "class" argument* [ 53874] doc_cache_create doesnt handle classdef documentation* [ 52096] meta.class.fromName throws error when class name not found.* [ 48693] classdef subsref method is not called with correct nargout value* [ 56006] Object indexing: obj(1).property(end+1:n) - end is interpreted wrong* [ 55983] 'x(ix) ==== supported ====[]' deletion syntax does not work for objects* [ 55976] cat, repmat, and reshape don't work for classdef objects* [ 55961] properties function does not preserve order* [ 55768] display of classdef object should not show private or protected properties* [ 55766] properties function should not return Hidden properties* [ 55746] interpreter fails to instantiate classdef with classdef properties* [ 52582] using static method to initialize property value fails* [ 45833] support load/save of classdef objects
* methods** static** private==== Classdef and +package directories ====
* [ 54941] interpreter cannot find methods in files of classdefs in packages ==== Arrays of classdef objects ===* [ 44665] error in concatenation of classdef objects* [ 53906] Cannot make an object array with square brackets* [ 47755] Access to object arrays* [ 47241] classdef: assigning property of handle object in object array constructs new object ==== Debugger (fixes for these are in progress) ==== * [ 46451] unable to set breakpoints within classdef classes* [ 45404] Breakpoints cannot be set in classdef methods or +package function files ==== Lower-priority issues ==== * [ 55488] Invalid use of colon char as classdef function's argument when subsref is overwritten* [ 54966] Error when assigning array to an object implementing subsasgn() subscripted using "{}"* [ 54028] copy of non-handle class instance is not deep* [ 53811] cellfun does not find overloaded function with function name argument* [ 52989] classdef: missing error messages on multiply defined properties* <strike>[ 52614] setting properties of classdef object during construction with inheritance</strike>* [ 52582] Dependent constant properties in classdef errors: no such file* [ 52123] Indirect memory leak in cdef_manager::initialize ()* [ 51285] max_recursion_depth error in classdef constructor* [ 50395] subclassing a class that is also defined as a variable fails* [ 50011] failure to report error on conflicting methods for classdef* [ 49379] classdef constructor: .argn. loses first argument, inputname(n) returns inputname(n+1)* [ 55810] sizeof() and whos() returns 0 bytes for classdef objects* [ 45893] classdef properties are not reloaded when file is updated* [ 44643] classdef handle object can go into an recursive loop with isequal(obj1,obj2) if both are self-referential* [ 55755] mxGetProperty does not work with properties marked as Dependent* [ 55767] classdef property should not be the same as classdef name (at least for Matlab compatibility)* [ 44035] unable to subclass built-in types ==== Documentation ==== * [ 50729] Improve OOP documentation* [ 47908] Octave:classdef-to-struct not documented in warning_ids.m* [ 44590] More documentation for the current status of classdef implementation === Classdef examples in the wild ====

Navigation menu