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KevinChen6

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1 points·by KevinChen6·vor 3 Jahren·0 comments

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1 points·by KevinChen6·vor 3 Jahren·0 comments

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1 points·by KevinChen6·vor 3 Jahren·0 comments

Find for early users of OLAP multidimensional database

github.com
2 points·by KevinChen6·vor 3 Jahren·0 comments

Logical model of OLAP multidimensional database

euclidolap.com
2 points·by KevinChen6·vor 3 Jahren·0 comments

Show HN: An open-source OLAP Multidimensional Database

github.com
5 points·by KevinChen6·vor 3 Jahren·0 comments

comments

KevinChen6
·vor 3 Jahren·discuss
I am very interested in octopuses as amazing creatures, and I think that octopuses missed the opportunity to become higher creatures like humans at some point in the evolutionary path, because everything has more evolutionary possibilities in the initial stage, and when it evolves to a certain extent, it can only offset the decrease in its existence by enhancing its own properties.
KevinChen6
·vor 3 Jahren·discuss
MDX describes data through a multidimensional structure, which makes the semantic model it presents closer to the real business, and based on this multidimensional model for more complex queries, SQL models can also provide similar capabilities, but it may be laborious or even extremely difficult to achieve when dealing with complex queries, but MDX also has disadvantages compared to SQL, that is, to thoroughly understand the multidimensional data model than to understand the SQL table model requires more learning costs.
KevinChen6
·vor 3 Jahren·discuss
[flagged]
KevinChen6
·vor 3 Jahren·discuss
I haven't used a map to find a destination in at least 15 years, and there's no doubt that paper maps can't match GPS in accuracy and convenience, but it gives me the experience of exploration and discovery.
KevinChen6
·vor 3 Jahren·discuss
Of course, a game is a virtual world, and the player's behavior in this virtual world can express his inner thoughts to a certain extent, including good and malice, and some sociologists have conducted sociological research through the player's behavior in games.
KevinChen6
·vor 3 Jahren·discuss
This seems to paint a picture of a bright future in which humanity will enjoy the benefits of cheap energy. If solar energy can replace oil, will the pattern of the world change as a result? If the world changes as a result, what impact will this change have?
KevinChen6
·vor 3 Jahren·discuss
What? Has the world become so complicated? In my impression, only toothbrush knowledge has added a micro motor, does it really need to be so only?
KevinChen6
·vor 3 Jahren·discuss
While AI is accelerating the demise of humans, the evolution of octopuses is on track, will the species that rules the earth after humans be octopuses?
KevinChen6
·vor 3 Jahren·discuss
That's cool! This reminds me of my experience in middle school when I used cardboard, bamboo sticks and rubber bands to make power paper airplanes, and the problem at that time was that in a short time after the plane was released, the propeller in front of the plane was driven by the rubber band to rotate very quickly, and if it could spin slower and lasts longer, the plane could fly farther, but I have not found a solution to this problem until now.
KevinChen6
·vor 3 Jahren·discuss
It's good that this project is used to help learn and understand operating system principles, but never expect it to be used formally.
KevinChen6
·vor 3 Jahren·discuss
Some fruits also taste sour when they are immature, because at this time their seeds are not yet ripe and they do not want to be eaten by animals at this time.

However, it is true that some fruits still have a sour taste when ripe, but fruits like lemons, which are very sour from beginning to end, are not common.
KevinChen6
·vor 3 Jahren·discuss
In the face of such problems, it is difficult to draw conclusions directly, and the solution to some things is often found in the process of doing.

If you're going to solve something like this, then a better way is to find the right way to do it first, but often this correct way is only discovered in the process of doing it.

Haha, it's like a paradox, if you don't do this then you can't find a solution, and as a result, this thing can't be done, and if you do it, then you will face an uncertainty.

So, you need to keep trying and trying and making mistakes, and then make adjustments, get closer to the unknown right direction, and finding the right direction is not a one-time achievement.
KevinChen6
·vor 3 Jahren·discuss
Fruit (ripe fruit) tastes delicious because it needs to be eaten by animals, and then the seeds can walk around with the animal's feces, which helps plants reproduce, which can also be explained by Darwin's theory of evolution. With such a sour taste as lemon, no animal will like to eat it, which is likely to lead to the extinction of this plant. Therefore, the evolution of nature is unlikely to have such a thing as lemons.
KevinChen6
·vor 3 Jahren·discuss
Yes, I also don't like doing front-end development work, not because front-end development work itself is offensive, but doing front-end development work is a very meticulous thing, which requires me to invest a lot of time, which will reduce my energy investment in other work content.
KevinChen6
·vor 3 Jahren·discuss
Learning to use any new tool comes at a time cost, and if I learn this and then a newer, more convenient tool emerges that can replace it, I get stuck in the question.

Are people driving the tools?

Or are the tools binding people?
KevinChen6
·vor 3 Jahren·discuss
It would have been nice if I had seen this article before refactoring a Java project into a C project, where learning memory allocation rules in order to use C was a painful process for me :(
KevinChen6
·vor 3 Jahren·discuss
I think whether to use modal window or not should be case-by-case basis. I once refactored a web application for a data analysis platform using a front-end framework that I developed myself, and many of the prompts and information display functions in this framework are implemented through modal windows. When we showed the system to customer, we still gained a little acceptance. Of course, this internal private system doesn't need to do SEO optimization and indexed by search engines, if there is such a demand, using modal windows may not be the best way.