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How to use the key special attribute inside the v-for directive using an array of arrays

List item A have variable that contains an array of arrays of objects like this : let FooVar: Array<Array<FooObject>> = [] ; i want to loop throug

How to disable button on form for a particular time based on success of modal button?

Here is the component.html code for Button that needs to be disabled on success response of the modal: <button title="Bypass Authentication" (click) = "opend

ExtJs , How to create Tracking/Steps Bar

I want to create steps or tracking bar in Sencha ExtJS Classic as the following images what is the best way to implement this in ExtJS Classic? each step have t

Unable to update EFI (BIOS) using nsh script when A/B partitioning is enabled

I have embedded linux (Buildroot based) OS with A/B partitioning enabled and trying to install EFI upgrades using nsh script. Note: Using EFIStub (directly boot

how to add multiple column values data into one datalist and attach to input field in php codeigniter

i have an input field and a datalist is attached to it. <input list="bookrecords" autocomplete="off" size="45" id="searchOption" name="searchOption" style="t

How to add type annotation to abstract classmethod constructor?

I'd like to type-annotate abstract class method witch behave as a constructor. For example in the code below, ElementBase.from_data is meant to be a abstract cl

How to minimize the latency involved in kafka messaging framework?

Scenario: I have a low-volume topic (~150msgs/sec) for which we would like to have a low propagation delay from producer to consumer. I added a time stamp from