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Mastering Development Software

How to represent bits both as objects (conceptually), yet as raw bits (compiler-wise)?

I am trying to come up with a generic foundation for a programming environment, and starting with bits. class Bit { value: 0 | 1 } class Bits { bit: [Bit] } However, I don’t actually want to create an object for each bit, that would be ridiculous. At the same time, I want to […]

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Mastering Development

How to style width of n number of divisions in Angular dynamically?

I am building a sorting visualizer on angular. What I want to do is generate a visualized array of random numbers in the form of bar representation using divisions. The width of each division corresponds to the value of the array on that particular index. For example if arr[0]=70, then the width of div id=’bar0′ […]

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Mastering Development

Parse String to ZonedDatetime including the Time Offset Java 8

I am having troubles parsing the following date 2020-06-11T09:03:46.000-0300. As far i know, i should use pattern ‘Z’ to represent the ‘-0300’ Zone offset, but this pattern does not produce the expected output. The code i am using to make the parse is @Test public void testDate(){ // The String and the pattern String strFecha […]

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Apple User Help

What are the reasons behing Apple deprecating scripting languages on macOS? [closed]

It has been announced for some time that UNIX scripting languages will be deprecated. That being said, it’s true that versions that ship with macOS Catalina are indeed old (python 2 is not supported anymore, for example). However I don’t quite understand why these run times are not simply updated, instead?

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Mastering Development

Sumifs statement returning a value when it shouldn’t

I have a sumifs statement that must satisfy two criteria – one must match the state and another must match a six digit code. My state data column includes an option called < select from dropdown > though this option does not exist in the reference and should therefore result in an error in the […]

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Cryptocurrency Ethereum Mastering Development

Websocket provider reconnects every 1 minute

I’m developing an application on a private Ethereum chain and trying to listen to some events. I wrote a basic indexer script for listening to events and writing them in a database. To listen to the events I am connecting to the provider via Web3.providers.WebsocketsProvider. I realized it keeps losing the connection every minute. And […]

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Mastering Development System & Network

Proxy-Arp setup with Keepalived

I currently am trying to create a setup with N servers where 1 server is the master for a Virtual IP, and the (N-1) servers act as backups, presumably controlled by keepalived. However, one issue I see with keepalived is that its intention is to bind the Virtual IP address (1.2.3.4) to whatever interface I […]

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Ask Engineering

Possibility of combining IDLE line UART interrupt with DMA?

So i’m writing drivers for DMA where I’m supposed to receive user inputs from the terminal and act accordingly after processing the data. User input is assumed “done” as soon as they hit enter (\r). It was mentioned in one of the threads I saw that timers could be used but it might just work […]

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Ask Engineering

Possibility of combining IDLE line UART interrupt with DMA?

So i’m writing drivers for DMA where I’m supposed to receive user inputs from the terminal and act accordingly after processing the data. User input is assumed “done” as soon as they hit enter (\r). It was mentioned in one of the threads I saw that timers could be used but it might just work […]

Categories
Ask Engineering

Possibility of combining IDLE line UART interrupt with DMA?

So i’m writing drivers for DMA where I’m supposed to receive user inputs from the terminal and act accordingly after processing the data. User input is assumed “done” as soon as they hit enter (\r). It was mentioned in one of the threads I saw that timers could be used but it might just work […]