Hertz | music streaming web application , Spotify | Music Player library

I'm reading the "Linux Kernel Development" by Robert Love. in the Chapter 11 "Timers and Time Management" he mentioned that:

The kernel defines the value in .The tick rate has a frequency of HZ hertz and a period of 1/HZ seconds. For example, by default the x86 architecture defines HZ to be 100.Therefore, the timer interrupt on i386 has a frequency of 100HZ and occurs 100 times per second (every one-hundredth of a second, which is every 10 milliseconds). Other common values for HZ are 250 and 1000, corresponding to periods of 4ms and 1ms, respectively.

I'm thinking that the monitor refresh should be also a timer-based event, but the refresh rate is 60Hz or 120Hz, seems this value can not be divided by 100,250 or 1000.

During on submit of the form throws below error. When I remove handleSubmit inside form onSubmit and just called onSubmit={onSubmit} error disappeared, but I am not able to see field validation error displayed ?

Objects are not valid as a React child (found: object with keys {type, message, ref}). If you meant to render a collection of children, use an array instead.

I am trying to create a UNIT CONVERTER which is a GUI application in Python using Tkinter. I have created one main OptionMenu and two other OptionMenus. These other two OptionMenus are dependent on the main OptionMenu i.e.upon selecting a value from the main OptionMenu, the list of values in the other two OptionMenus changes. I have created two buttons "Convert" and "Reset". In the Reset Button, I am trying to reset the selections on all three OptionMenus.

Source Code

After watching my work folder get cluttered I have moved code files corresponding together into a subfolder. The problem is that the data my program uses is itself placed in a subfolder of the now parent folder. I used pathlib to extract the data from the subdirectories like so:

I have 20'000 1minute wav files recorded over two weeks in a folder. These are all named with a suffix to indicate the time of day they were recorded (e.g "_213032" = 9:30pm and 32 seconds). I want to work on a smaller subset of these recorded at certain times of day (once every 20 minutes between 7pm and 5am). So I created a vector of the appropriate suffixes (file_name_ends) and saved all the file names I want into a vector (wav_files) using:

The technologies I'm using are react, typescript, and styled-components. I'm trying to create the select component in order to make use of it in React Hook Form. At first, it looks like everything is correct, but I'm getting an error from typescript saying:

No overload matches this call. Overload 1 of 2, '(props: Pick, "form" | ... 262 more ... | "onTransitionEndCapture"> & { ...; } & ISelectProps, "form" | ... 264 more ... | "options"> & Partial<...>, "form" | ... 264 more ... | "options"> & { ...; } & { ...; }): ReactElement<...>', gave the following error. Type 'ForwardedRef' is not assignable to type 'RefObject | (RefObject & ((instance: HTMLSelectElement | null) => void)) | (((instance: HTMLSelectElement | null) => void) & RefObject<...>) | (((instance: HTMLSelectElement | null) => void) & ((instance: HTMLSelectElement | null) => void)) | null | undefined'. Type 'MutableRefObject' is not assignable to type 'RefObject | (RefObject & ((instance: HTMLSelectElement | null) => void)) | (((instance: HTMLSelectElement | null) => void) & RefObject<...>) | (((instance: HTMLSelectElement | null) => void) & ((instance: HTMLSelectElement | null) => void)) | null | undefined'. Type 'MutableRefObject' is not assignable to type '((instance: HTMLSelectElement | null) => void) & RefObject'. Type 'MutableRefObject' is not assignable to type '(instance: HTMLSelectElement | null) => void'. Type 'MutableRefObject' provides no match for the signature '(instance: HTMLSelectElement | null): void'.

Here's my code:

A DataGrid is created within Dialog. But the column menu is overlapped by Dialog.

Please check the following demo SandBox

What I have found and try so far:

1. Dialog will create a html tag

The z-index:1300 will cover the column menu

I'm working on a Unity app that has some Microphone controls. At one point, I have to convert the Microphone input into Hertz (Hz) values and show them to the user. Now, I did some research and I made the following script for this purpose:

Im trying to create a HOC to get the ref of any component.

When I pass normal jsx, works well. But it doesnt work when I pass a functional component: