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User Help Web Apps

Using query function with (matches) empty cell

=query(A1:S10,"select C,D,E,F,H,K,P,R,S WHERE Q=’USA’ AND R matches ‘Florida|NY|”’ I would like to add (or empty cell) to the ‘Florida|NY’ That is to say I would like to select rows with the Q= ‘USA’ and R matches either ‘Florida’,’NY’ or empty

Categories
Mastering Development

How do I select columnA columnB from table where columnA is not in the set of records and display those rows having columnA not in the set of records

Problem Summary The title is as syntactically identical to my target relational database management system (RDBMS) as possible, but I want to find a solution. Question How do I select two columns from a result of a join query, then use a where clause to display those results from the join also displaying the non […]

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Raspberry Pi User Help

Using a toggle switch to turn the Pi on and off

I’d like to use a toggle switch to turn the pi on and off. I wrote a little code that works fine. But im not sure if this is the right way to do it. So my question is, is there a better/right way or is this just fine? import RPi.GPIO as GPIO import subprocess […]

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Mastering Development

Label in the same position regardless of platform and resolution

I’m trying to show a Label in the same position, regardless of screen resolution and platform, using LibGDX. On desktop I see it in the right position but on Android it is in the wrong position. How can I do? MyGdxGame.java (core): import com.badlogic.gdx.ApplicationAdapter; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.InputProcessor; import com.badlogic.gdx.graphics.Color; import com.badlogic.gdx.graphics.GL20; import com.badlogic.gdx.graphics.OrthographicCamera; import […]

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Mastering Development System & Network

Enabling MySQL authentication for proftpd

I am trying to use MySQL authentication for proftpd. I have configured everything and the authentication is working fine. The issue I am facing is that there is another database already being used for logs. So during the authentication time, the database user for the authentication is trying to write data to log database. proftpd[234014] […]

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Mastering Development

How to add padding in custom switch compat in android?

I am trying to implement a custom switch compat and I am referencing another stackoverflow answer: How to set width and track text in a Switch/SwitchCompat button and achieve this result? (Image and GIF attached) My code is almost identical to this other than small updates. class SwitchCompatEx : SwitchCompat { companion object { val […]

Categories
Mastering Development System & Network

Enabling MySQL authentication for proftpd

I am trying to use MySQL authentication for proftpd. I have configured everything and the authentication is working fine. The issue I am facing is that there is another database already being used for logs. So during the authentication time, the database user for the authentication is trying to write data to log database. proftpd[234014] […]

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Arduino Ask Engineering

Run multiple function with different argument/return structure by one function pointer

I’m working on a project where I want to develop a small FSM code, and where I want to run the project with one switch function, I need a function pointer to run whatever function is called. Now, I started to assign functions to the function pointer, but I get a warning of incompatible pointer […]

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Mastering Development

How do I improve the number detection for blueprints (OCR)

I have a number of blueprints where I would like to detect the numbers on the blueprint such that I can turn them into proper models. for example I have the following image and would like all the numbers on this image so I ran the following code: import pytesseract from pytesseract import Output import […]

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Ask Biology

Is chromatic aberration related to the spectral sensitivity of the human eye and can it cause “relative myopia” and “relative farsightedness”?

in the text below, the authors equate chromatic aberration and the spectral sensitivity of the human eye. Aren’t these two very different phenomena though? They also propose a so-called "relative myopia" and "relative farsightedness". Are these claims valid? Does chromatic aberration even pertain to the human eye? I can only find sources that discuss this […]