Space to Think

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    |  (18844)  Negative Cardinality :  A mathematical set property of having less than 0 elements (Just like antimatter in Physics.)
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    | (18844)  Quantitative Cardinality Sets Project :  Brining sets with quantifiabiable cardinality into common use in mathematics.
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    I implemented a hash that takes previous data and current column and the previous hash to produce a hash of the entire database.

    This allows us to synchronize with the minimum of data transmissions when I write the synchronizer part which shall rehash all its own data, then retrieve the hash of a binary search of the sorted data.

    —chronological
    -3.0000 ħ (3.0 HUR) (+0.0)

    I spent a few hours working on the remainder of this problem and got documnent retrieval working after finishing save document.

    This lets you save and retrieve JSON documents

    The document data inserted is also queryable by SQL.

    Joins against documents are not yet supported but I plan to implement this.

    —chronological
    -4.0000 ħ (4.0 HUR) (+0.0)

    Most computers use locks to synchronize, which are very slow. This design is far faster and allows locks to be elided for performance.

    I use unscynchronized data structures and achieve 100 million requests a second raw communication performance for a cost of 10 nanoseconds per batch of messages.

    —chronological
    -8.0000 ħ (8.0 HUR) (+0.0)

    I managed to store a JSON document and I used the SQL inserter to insert the document. In theory the object is queryable by SQL

    { "items": [("name": "item1"), ("name": "item2")], "subobject": {"subobject_key": "value"} }

    —chronological
    -3.0000 ħ (3.0 HUR) (+0.0)

    The idea is that each thread has a ringbuffer, when a socket is accepted, a message is put on the ringbuffer and the thread begins listening to that user.

    All the other threads are notified of all the users so they can also echo data to them.

    This is efficient as a thread can serve thousands-millions of connections and there are multiple threads.

    One problem, which is a generic problem for multithreading is servicing one of multiple kinds of events from one thread. I rely on the fact I am polling a ringbuffer and epoll.

    —chronological
    -7.0000 ħ (7.0 HUR) (+0.0)

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  • How Touchscreens May Have Delayed Humanity's Progress: A Multi-Trillion Dollar Mistake? :  The kids of developing world could not use phones to engineer for decades, and the "remote control" capabilities are not the focus of smart phone industry even today. Looking back to our history, we may discover, that the premature introduction of touchscreens have been among the worst innovations ever, that had delayed humanity's progress in numerous fields from software and hardware engineering to remote control domains. With the focus on "what can be done with a flat touchscreen", we may have wasted countless hours of front-end developers to soft-innovate ways of touching, instead of pushing hardware engineers to hard-innovate better input hardware form factor, that prevented the creation of "precision remote control" input capabilities for the masses, degrading the masses to the behaviors of scrolling with a thumb. 1. Touchscreens delayed software and hardware engineering Back in the days of Nokia 9000 Communicator, and IRC chat, we had a trend of developing mini hand-held PCs (see: modern variant). Imagine that a touchscreen and PDA were not invented, and instead, people would have evolved those hand-held PCs, to the point where keyboard went behind (like explained in: Hankeyboard idea), allowing for blind touch-typing with 10 fingers, while viewing the screen (a bit like with modern "PlayStation Portable" (PSP), but with full keyboard at the back of it). This kind of device …

ago @ Multithreaded programming language, compiler and interpreter

The link to the project's repo is telling more than the summary. … (expand)

[reply]

—Mindey

ago @ Simple Brainwave Modulation Prototype App

Welcome back, [Niamh]! I'm quite surprised how good a match is your … (expand)

[reply]

—Mindey

ago @ Imaginary auction shop

This idea reminds me of some projects on crowdfunding platforms. They only … (expand)

[reply]

—Niamhnab

ago @ Personalized Diet

I guess, using neuralink, we could automate that collection of data about … (expand)

[reply]

—Mindey

ago @ Personalized Diet

// How to discover what foods are good for each individual? The … (expand)

[reply]

—Mindey

ago @ Investomart

Retail buyers (consumers) buying out the producer stocks on a daily basis, … (expand)

[reply]

—IdeationGeek

ago @ Personalized Diet

So, would this problem be better named as "Food compatibility matching" or … (expand)

[reply]

—Mindey

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