sl-im | 基于SwoftLayIM构建的聊天室 - | Websocket library
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QUESTION
I need some help here please...
Im making a chat app with angular and material, and i need to show the user nickname only one time before the next user messages enter in action (like whatsapp or similar), something like this:
user1: message 1 message 2 message 3 user2: message 1 message 2 user1: message 4 etc
This is my component.ts:
...ANSWER
Answered 2021-May-13 at 20:22You can group your list in a more convenient order before you throw it to HTML to do its job.
Assume that your array is,
QUESTION
I have JSON data, I'm trying to get the value by passing key but it gives me TypeError
My JSON Data :
...ANSWER
Answered 2021-Apr-28 at 06:49I would do it like this:
QUESTION
im using pyqt5 to create a gui and using matplotlib
but whene i try to create executable with pyinstaller it dose not work
i try a few solution like :
1- Can't create working PyQt5 Python executable with PyInstaller/
2- In PyInstaller, Why Won't NumPy.Random.Common Load as a Module?
3- Python SSL Import Error in PyInstaller generated executable
i try to do it with cx_Freeze and try this solution cx_Freeze error: baseline image directory does not exist
but nothing work with me
this is my log after using pyinstaller
...ANSWER
Answered 2020-Nov-17 at 18:45You can try and downgrade your matplotlib version, which you don't seem to mention. 3.1.3
fixed it in my case using PyInstaller and PyQt5.
QUESTION
I've been having a problem with testing my app because of this error, mroe specifically The seed entity for entity type 'Artikal' cannot be added because there was no value provided
.
The problem is that the value (that represents a FK in Artikal class) is definitely provided, both through the dictionary paroviTip
and the class Tip itself.
I want to seed some data into a database, using the modelBuilder extension (that should be the proper way for .NET Core 2.2), but the migration can't be added because of this particular error.
I pretty much ran out of options so I need an outside look on this code.
ModelBuilderExtensions that fills the DB:
...ANSWER
Answered 2019-Jun-16 at 10:22You are trying to use EF Core Model seed data which has the following specific requirements:
To add entities that have a relationship the foreign key values need to be specified
and
If the entity type has any properties in shadow state an anonymous class can be used to provide the values
Shortly, you cannot use navigation properties with this type of data seeding.
Which is your scenario means that
QUESTION
Im having some issue extracting some image urls from amazon with xpath.
The page im trying to extract the url is this one, as an example
I have this:
...ANSWER
Answered 2018-Nov-16 at 20:07Maybe try extract_first()
instead of extract()
?
extract()
typically returns a selector list, not a single value.
QUESTION
I am using SimpleLightbox v1.15.0 and want to be able to rotate images using a button. I have added a button to a downloaded demo page and (after much effort) have the button appear with the lightbox and disappear when closed.
I have written this underneath the existing function...
...ANSWER
Answered 2018-Nov-10 at 15:22I have discovered an answer to my own question. The associated javascript file has a small block of code that looks like this:
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PHP requires the Visual C runtime (CRT). The Microsoft Visual C++ Redistributable for Visual Studio 2019 is suitable for all these PHP versions, see visualstudio.microsoft.com. You MUST download the x86 CRT for PHP x86 builds and the x64 CRT for PHP x64 builds. The CRT installer supports the /quiet and /norestart command-line switches, so you can also script it.
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