Who Knew? What do Knitting and Computers/Digital Technology have in Common?

Both have a positive association on cognitive abilities such as executive function, short term memory, reasoning, global cognitive function, processing speed and recall. In older adults these skills can stimulate several cognitive abilities, brain plasticity and  possibly reduce MCI (mild cognitive impairment).   Knitting can lower heart rate and blood pressure and reduce harmful blood levels …

Who Knew? What do Knitting and Computers/Digital Technology have in Common? Read More »

Special oddness with useState()/useEffect()

This is interesting/weird.  The following code does NOT work: const [refresh, setRefresh] = useState(10); useEffect(() => { setInterval(() => { console.log(“Timeout, refresh:”, refresh); setRefresh(refresh + 3); }, 1000); return list.unsubscribe; }, []); What happens is that each time the timer-interval goes off, the value of ‘refresh’ is still at 10. Why? The value goes to …

Special oddness with useState()/useEffect() Read More »

A different approach to data-sharing of server data/lists across components.

  I ran into a new challenge when I was refactoring and organizing code and components into smaller reusable pieces.  I ran into a case where HOC-like approaches wont work, but perhaps an Inheritance model will, and settled on a much different approach. Let’s discuss the use case.  Imagine your server holds a list of …

A different approach to data-sharing of server data/lists across components. Read More »

Some in-the-trenches tips/experiences with React/Jest (autotesting)

I love React, and mostly like Jest (and Jasmine and Java predecessors) but I will say: I spent a WAY MORE ENORMOUS time chasing simple debugging of jest scripts. Simple stuff. Why? I really dont know. It wasn’t designed for what I really want. It is designed for HUGE systems (like Citibank, Bank America, Amazon) …

Some in-the-trenches tips/experiences with React/Jest (autotesting) Read More »

Risk Management – Leverage Excel for fast, easily revised Risk Analysis

Product release to the customer often requires a FMECA (Failure Modes Effects and Criticality) along with the Reliability Prediction to complete the delivery package; in addition, revisions are common along with the pressure to update the Risk Analysis package quickly and accurately.  Excel provides data import, lookup, merge and formatting to automate this process and …

Risk Management – Leverage Excel for fast, easily revised Risk Analysis Read More »

AWS and PEM madness–ever lost or hurt your PEM file?

Yeah, we all have. What I went thru many of you (I hope!) wont…but ever faced that “Lose your PEM file and you’re dead” from AWS? Been there. Turns out, it is survivable. AND do you even know what the files mean? I did not. It happens. Sometimes you lose or trash your PEM file …

AWS and PEM madness–ever lost or hurt your PEM file? Read More »