Is there a way to retrieve json data based on logic or need of my app? [closed] - flutter

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In my app,I want to retrieve json data from api,but my json file is too complex and large.so I want specific data according to my app needs every time when I call api and save that data directly into sqlite database.

Then you need to only parse the data which you require, If you want to make this easy for you, use the extension in vs code, called DART DATA CLASS GENERATOR. It makes everything easy.
But, I would strongly suggest if you are new to the programming then learn DATA MODELLING.

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Looking for free collection of different vCards (*.vcf) [closed]

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I am currently working on a vCard parser. For the testing of the different edge cases of vCards (the standard allows a high variance) I need a collection of vCards from different sources.
At the moment I am working with some vCards I created on my own and was wondering if there is a free collection of vCards (*.vcf) in the web which I can use for testing purposes.
Here is a LGPL vcard test suite for testing vCard parsers:
https://gitlab.com/pwithnall/vcard-test-suite/-/tree/master
It cover valid and invalid card and looks extensive.

Any documented REST/Golang API for the 'new' Firebase? [closed]

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Has anyone seen note of if the REST API's are being continued for the new Firebase (I don't know what to call it other than 'new' - the current updates that were announced at Google I/O). I asked support - but I'm a few days in without a response. Just trying REST with random parameters on a new format index didn't do anything useful.
The updates look really good - but I have a lot of already existing REST code (mostly from Go) and I don't know what to do other than dig through the JavaScript and start hacking the Go libraries. If I'm going to get cut off there's not point even starting, and if there's an official interface on the way it's definitely not worth messing with.
Any help appreciated. :)

What package to use for database migrations in Go? [closed]

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I am fairly new to golang, and trying to identify the best tools for the job. Currently I am evaluating the following packages:
https://github.com/mattes/migrate
https://github.com/DavidHuie/gomigrate
https://bitbucket.org/liamstask/goose/
I was wondering if anyone had any experience with these (or other packages) and could provide some comments.
We use mattes/migrate at work and are very happy with it. It works with plain SQL files, handles file naming by itself and can easily be automated via CLI. It doesn't do anything Go specific.
With gomigrate you need to create the files yourself and write code for executing the migrations.
Take a look at https://github.com/pressly/goose, a maintained fork of https://bitbucket.org/liamstask/goose/.

backup/restore from-to Gmail? [closed]

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I would like to implement in my app, written in Lua,the option to save a backup file to Gmail and restore it from there.
I just need how to save one file and restore that from the same account again.
Several apps use that feature now ( i guess using the Gmail as HD Feature).
Any ideas? I could read also PHP, Object-C and Java sources if you have nothing in Lua :)
I searched for infos in the net, but did not found a single demo source.
A google search turned up these IMAP clients:
luaimap
imapfilter
And from the Lua mailing list
limap

Duplicates in a QIF File? [closed]

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Does anyone have a good way of deleting duplicate transactions (same date, amount, biller, etc) in a QIF file? I looked at PERL's Finance:QIF, but it appear to have delete a record function.
Alternatively, does someone have a good QIF --> CSV converter?
Although I am looking at a PERL solution, I am open to other ideas.
Finance::QIF doesn't really need a delete() method (although it would be handy), because you can access all the transactions as a list and manipulate it yourself. The source code is very straightforward, it would be pretty easy to add a as_csv() method to Finance::QIF::Transaction (the module used to store one transaction's data), after which you can apply your own sort-for-uniqueness method (e.g. plain old "sort -u").