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User Help Web Pro

Website disappeared from google search results

Yesterday I updated the index.html of my website and re-uploaded the file to my hosting site. Today, my site doesn’t appear on google for any search at all, even though before it was the top result from multiple keyword searches. url http://oxfordcliqr.com/ What could of caused this and how can I get my site back […]

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Ask Chemistry

When is Raoult’s Law valid for solid-liquid solution?

Raoult’s Law for solid-liquid solution is stated as such in my books that it is applicable for all non-volatile solutes. However different solutes must have different attractive or repulsive forces and in such a case, all of them will probably hamper vaporisation in different ways. Then how come can we simply define the law as: […]

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Mastering Development

Error building JavaFXPorts project with Gradle 6.6.1

Error Log: FAILURE: Build failed with an exception. * What went wrong: A problem occurred configuring root project ‘Mobile’. > Could not create task ‘:debug’. > Unnecessarily replacing a task that does not exist is not supported. Use create() or register() directly instead. You attempted to replace a task named ‘debug’, but there is no […]

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Mastering Development

Error: Element type is invalid React Native

When I launch my app on android I get that error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it’s defined in, or you might have mixed up default and named imports. Here is […]

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Mastering Development

.NET Core works 2 times faster on Linux

I have my own application (asp.net core 3.1) that selects data from the database and gives it back. I tested two servers (Windows2019 + MSSQL2019, Ubuntu 20.04.1 LTS + MSSQL2019), to my surprise and regret it works 2 times faster on Linux. Why is this so and do you have any thoughts or experience about […]

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Mastering Development

Storing unique images in table

I’ve inherited a database which contains .png images which have been converted byte[] and finally ToBase64String and saved in a table with many duplicate images. I want to clean this up create a new table with unique images but the original tables have no primary key related to the image. I’ve come up with the […]

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Mastering Development

How to insert variable values in between a string in PHP?

I am trying to build a MySQL Query, and I want my final query to look like this – INSERT INTO table1 (‘txnid’, ‘date’, ‘amount’, ‘name’, ’email’, ‘mobile’, ‘city’) VALUES (‘$txnid‘, ‘$date‘, ‘$amount‘, ‘$name‘, ‘$email‘, ‘$mobile‘, ‘$city‘) I have all the required variables ready, I just don’t know how to pass their values in between […]

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Mastering Development

API : Return viewmodel/response based on Enum value

I’m working on an API endpoint working with enums, and I need to return a different Response/ViewModel based on enum value. I’m sure Generics can help me here but I can’t figure how. Multiple entry points that looks like : public async Task<IActionResult> Get[ElementEnum](Enum enum, int? id = null) { return await this.PrepareResponseFor[Enum]And[ElementEnum](enum, [ElementEnum].Value, id); […]

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Mastering Development

What Are the Api’s used in google quality meet quality tool?

This is the UI of google quality tool, but I need API where I can get all the data.Please help me , I am researching this from the last 4 days

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Mastering Development

dayjs is not converting timezones properly

I’m trying to convert a date from my local time (Taipei UTC+8) to Los Angeles ( UTC-7) however dayjs conversion seems to be completely off : dayjs("2020-09-21 20:30").tz("Asia/Taipei") this results in Tue Sep 22 2020 05:30:00 GMT-0400 (Eastern Daylight Time) but it should have been Mon Sep 21 2020 02:30:00 GMT-0400 (Eastern Daylight Time) any […]