I develop my application with Dart and Polymer on PyCharm. I currently have an error :
Exception: type 'ObservableList<DrugFilterItem>' is not a subtype of type 'ObservableList<DrugCompareItem>' of '__$orderFilterList#51385934'
ObservableList is from package:observe/src/observable_list.dart
DrugFilterItem is from package:synmed/drug_elements/views/drug_filter_menu.dart
ObservableList is from package:observe/src/observable_list.dart
DrugCompareItem is from package:synmed/drug_elements/views/drug_search_toolbar.dart
DrugFilterItem and DrugCompareItem are both custom classes, DrugCompareItem extends DrugFilterItem, and the line designed by the error is :
ObservableList<DrugCompareItem> orderFilterList = new ObservableList<DrugFilterItem>();
The problem suddenly happened today : I installed Pycharm 2016.3 and tried to code, but I had an error with the package shadow, which I solved. Since, I have this error which I supposed came from a problem with the packages as the code didn't change from before to after.
What I have found for now is nothing in fact, I read a lot of post on this kind of error, one of the recurrent subject was the imports but I didn't find any problem with this. I am using Dart 1.20.1 and
polymer: "<=0.16.4+1"
core_elements: "<=0.7.1+3"
paper_elements: "<=0.7.1"
Do anyone has any clue for me? Thanks!
Sounds like https://github.com/dart-lang/sdk/issues/14972#issuecomment-108402835
I believe this is working as intended. A List is not assignable to a List, even if it only contains Apples.
There are several ways to work around this:
iterable.map((x) => x) (removing the generic type),
new List<MethodMirror>.from(iterable)
new MyIterableWrapper<MethodMirror>(iterable) (where the iterable-wrapper that would need to be written).
Related
ERROR in node_modules/#types/select2/index.d.ts(163,18): error TS2430: Interface 'AjaxOptions' incorrectly extends interface 'Pick string)' is not assignable to type 'string'.
Type '(params: QueryOptions) => string' is not assignable to type 'string'.
After reasearching a lot and trying to find a solution on my own (due to lack of solutions on internet), I found a fix at least for my issue.
I will share it with you just in case.
On my case the root cause of this was an entry on '.angular-cli.json' that was missing and because of this the 'select2' js file was not being uploaded.
So I just added this line to the .angular-cli.json:
"scripts": [
"../node_modules/jquery/dist/jquery.js",
"../node_modules/jqueryui/jquery-ui.js",
"../node_modules/select2/dist/js/select2.full.js",
This solved my issue and now I'm able to use the select2 control.
Note that you might need to add the .css for select2 as well ;).
Good luck!.
I'm trying to create a Sitelet with SiteletBuilder in C#:
return WebSharper.Sitelets.Content.Page(...)
However, the class Websharper.Sitelet contains Content both as Struct and Class.
So, this does not compile.
Versions of Zafir-Libraries are
Zafir 4.0.152.29-beta5
Zafir.CSharp 4.0.152.29-beta5
Zafir.Html 4.0.56.95-beta5
Zafir.UI.Next 4.0.102.33-beta5
How to reference WebSharper.Sitelets.Content proberly?
Or is this indeed a bug?
Thanks for the report, created ticket: https://github.com/intellifactory/websharper/issues/645
I have been testing with having using WebSharper.Sitelets; and then using with shorter form Content.Page(...). C# can resolve this for some reason, although the name conflict indeed exists in WebSharper.Sitelets.dll
I am trying port to Dart this nice paper-datatable implementation using custom_element_apigen.
Some problems occurred and sought to find solutions according to my understanding (perhaps included more problems!).
However, still an error is thrown and not been able to move on. I need some help about how port to Dart!!! I will briefly describe the steps, errors and solutions that gave and a link to source code of the project test:
1) I following the steps, accord to https://github.com/dart-lang/custom-element-apigen. I had problems on Windows, but I got to resolve after (custom_element_apigen: gives an error importing paper-datatable to Dart)
2) apigen.yaml used with custom_element_apigen does not clear how to configuration.
I used the "trial-and-error" method until no more error occur. It was so:
files_to_generate:
- paper-datatable\paper-datatable.html
- paper-datatable\paper-datatable-column.html
- paper-datatable\paper-datatable-edit-dialog.html
- paper-datatable\paper-datatable-card.html
- paper-datatable\paper-datatable-styles.html
- paper-datatable\datatable-icons.html
files_to_load:
- package:polymer_elements/src/paper-material/paper-material.html
- package:polymer_elements/src/iron-ajax/iron-request.html
- package:polymer_elements/src/iron-ajax/iron-ajax.html
- package:polymer_elements/src/iron-form/iron-form.html
- package:polymer_elements/src/iron-meta/iron-meta.html
- package:polymer_elements/src/iron-icon/iron-icon.html
- package:polymer_elements/src/iron-iconset-svg/iron-iconset-svg.html
- package:polymer_elements/src/paper-ripple/paper-ripple.html
- package:polymer_elements/src/paper-checkbox/paper-checkbox.html
- package:polymer_elements/src/neon-animation/animations/opaque-animation.html
- package:polymer_elements/src/neon-animation/animations/fade-in-animation.html
- package:polymer_elements/src/neon-animation/animations/fade-out-animation.html
- package:polymer_elements/src/paper-tooltip/paper-tooltip.html
- package:polymer_elements/src/iron-resizable-behavior/iron-resizable-behavior.html
- package:polymer_interop/src/js/debug/src/lib/template/templatizer.html
Some paths imports were wrongs on paper-datatable*.(html and dart) files. p.e. : import 'packages\polymer_interop\src\js\debug\src\lib\template\templatizer.dart'; I changed to import 'package:polymer_interop/src/behaviors/templatize.dart';
on paper_datatable_column.dart.
I changed reserved Dart word default to defaultx on get defaultx => jsElement[r'default']; and set defaultx(value) { jsElement[r'default'] = (value is Map || (value is Iterable && value is! JsArray)) ? new JsObject.jsify(value) : value;} instructions on paper_datatable_column.dart and paper_datatable_card.dart;
After the following erros were occuring in several polymer componentes. P.e.: Failed to execute 'registerElement' on 'Document': Registration failed for type 'iron-meta'. A type with that name is already registered.
I changed all paths into paper-datatable*.* files to get official package (pub.dartlang) of the polymer and polymer elements. P.e.: <link rel="import" href="paper_icon_button_nodart.html"> to <link rel="import" href="../../packages/polymer_elements/paper_icon_button_nodart.html">. The register problem does not occur more!
But now, the following problem is occuring and I don't know how to resolve it: On debug console appear the following message: Uncaught SyntaxError: Unexpected token =>. The web app works on browser, but the paper-datatable does not appear.
My complete test project (webstorm) is on https://github.com/supermuka/paper_datatable_port_dart_demo
Is there some wrong in how I used Dart custom_element_apigen (and apigen.yaml)? Did I some things wrong on paths changed? I also need to change some other source?
Thanks!
Most likely you just created a syntax error when editing the files. That being said there are options built in to do most of the things you manually did, and that also makes it easier to update in the future.
omit_imports: This is used on individual items in the files_to_generate section. It can be used to get rid of the templatizer import entirely, resolving issue #3. See example here.
name_substitutions: This is used on individual items in the files_to_generate section, and allows you to rename fields. You can use this to resolve issue #4, example here.
stubs_to_generate: This option allows you to generate stubs which actually import elements from a different package, this should resolve issue #5 you listed above. See example usage here.
Hopefully that helps, and applying those options will just resolve your issues.
I've noticed that calling hh_client is not always returning correct result. For example: I have following pieces of code:
backend\ConvertMessage.hh:
<?hh // strict
namespace ApiBackend\ConvertMessage {
enum Status: int {
success = 0;
// ... error codes
};
// ... some other classes
};
other place in project:
throw new \SoapFault(
'Server',
\ApiBackend\ConvertMessage\Status::getNames()[$result->status]
);
Sometimes, after doing some changes in project I get following error message: Could not find static method getNames in type ApiBackend\ConvertMessage\Status (Typing[4090])
When I remove a semicolon after one of closing curly brackets, hh_client stops displaying error. But when I insert semicolon back on its place, typechecker still gives me No errors! message.
This is not the only file that causes this problem - it happens to all enums.
It seems to me that it is problem with some cache of either hh_client or hh_server.
Thanks in advance for helping me with solving this problem (and sorry if my english is not too good).
You are probably using an outdated version of HHVM. This problem sounds an awful lot like this race condition, which was fixed in HHVM 3.5.0 and newer (and was backported into the 3.3.3 LTS release). Notably, 3.4.x still had the bug.
What version of HHVM are you using?
I am working ti old F# code from Expert F#. However, the example doesn't build anymore.
The following two calls don't seem to exist:
semaphore.AsyncWaitOne(?millisecondsTimeout=timeout)
and
reader.ReadToEndAsync()
Does anyone know what these have been replaced with or if I am just missing a reference?
It's now called Async.AwaitWaitHandle.
AsyncReadToEnd is in the F# PowerPack.
By now, FSharp PowerPack project has been broken up into smaller modules for any further development.
Specifically, the AsyncStreamReader class and the extension methods for the reading from a StreamReader, WebClient, etc. the new project is FSharpx.Async.
1) AsyncWaitOne is now called Async.AwaitWaitHandle.
2) AsyncReadToEnd() extension method does not exists anymore in the FSharp.PowerPack.
It has been replaced with the AsyncStreamReader dedicated type that contains proper asynchronous implementation of stream reading (like ReadToEnd, ReadLine, etc.)
It can be used like that:
async {
use asyncReader = new AsyncStreamReader(stream)
return! asyncReader.ReadToEnd() }
Note: Once you have installed FSharp.PowerPack, the AsyncStreamReader type will be 'injected' in the Microsoft.FSharp.Control namespace