fjfaase

12 ms·

121.
by fjfaase 11mo ago
Sorry, I mend to say: Even if a grammar is not ambiguous, it can require unbound look-ahead to be parsed correctly [1]. The grammar of C is ambiguous. The statement "a * b;" can be both parsed as a variable declaration of the vari
122.
by fjfaase 11mo ago
No, even if a grammar is ambigious it can require unbound look-ahead to be parsed, although this is very rare the case for meaningfull grammars such as the ones you would write for a programming language. What I wanted to say that you do no
123.
by fjfaase 11mo ago
It surprises that they are still teaching parsing techniques that are based on limitation from 40 years ago, when memory was limited and you had to parse a file one character at the time. Why not start with a back-tracking recursive descent
124.
by fjfaase 11mo ago
I wonder how much this experience is similar to the Alien Hand Syndrome, where people experience that part of their body, usually a hand, act on their own.
125.
by fjfaase 11mo ago
Would be nice if you could block all accounts from specified regions.
126.
by fjfaase 11mo ago
I remember creating an oscilator by soldering a transistor onto an inductor with two windings in series with loudspeaker an battery.
127.
by fjfaase 11mo ago
I have one at home, which is the one we had to buy to use in highschool. In the math classrooms we had a 6 feet version that could be mounted on the blackboard such that the teacher could used for instruction. See for a picture on the Dutch
128.
by fjfaase 11mo ago
Makes the typical error of first giving a very high level description of what is going to be explained, which can only be understood if you already have some knowledge in the field, instead of starting with the most simple example and build
129.
by fjfaase 11mo ago
No you don't because the same kind of quatum randomness is also at work in all of your cells and sometimes have far reaching effects. The reason why we do not free will, at least not as it is commonly understood, is independent of whet
130.
by fjfaase 11mo ago
This is just an introduction to mathematics, but it already assumes some knowledge about mathematics. In the first equation it uses the superscript 2 for squaring without explaining it. It also does not explain that 'ab' stands fo
131.
by fjfaase 11mo ago
Because this virus is do deathly and because it not airborn, like covid, there is not much reason to fear it will become a pandemic.
132.
by fjfaase 11mo ago
Great. Are you going to open source it? If so, let me know. You find my email address on my website mentioned in my profile.
133.
by fjfaase 11mo ago
Interesting page. The latest language I designed is an stack based intermediate language for a C compiler. Not realy intended for human usage, but readable in the sense that you can compare it with the original C code.
134.
by fjfaase 11mo ago
Begriffsschift was the first formal notation for second order logic.
135.
by fjfaase 11mo ago
I am using a stack based language as an intermediate language for a C compiler I am writing. The language can be mapped to assembly and I wrote a memory safe interpreter for it. Both are not geared to performance as that is not a primary co
136.
by fjfaase 11mo ago
I used this language in a workshop on parser construction at MCH2022. The particepants where asked to construct the grammar for the language, which proved harder than I had expected for most of them.
137.
by fjfaase 11mo ago
I use HTML for my presentations and publish them online mentioning the URL at the top, such that people can open them on their device, which is often a smart phone. I take that into account for the interactive parts of the presentation.
138.
by fjfaase 11mo ago
I wonder if foreign airlines are going to demand compensation, like US airlines have done in the past when a country made one sided changes.
139.
by fjfaase 11mo ago
I am a bit surprised that the build_all_fast_glibc.sh script requires 31Gbyte of memory to run. Can somebody explain? I would like to try out Fil-C.
140.
by fjfaase 11mo ago
The link https://leetarxiv.substack.com/sinkhorn-solves-sudoku reports 'Page not found'.
141.
by fjfaase 11mo ago
If you convert a sudoku to an exact cover you can usually solve it by finding colums that are a subset from another column and remove all rows that are only in one of them. Sudokus that can be solved with reasoning alone, can be solved in p
142.
by fjfaase 1y ago
I wonder if they also have a strategy for deleting generate tiles, otherwise the infinite is limited to the size of available memory. I also wonder if with their method can exactly recreate tiles that have been deleted. Or in other words, t
143.
by fjfaase 1y ago
No, but I don't care. I guess that most hiring managers do not know what AoC is. Next week, I will be 64, and I am no longer searching for a full time job. In the past decade I only worked for 24 or 30 hours per week. I am financial in
144.
by fjfaase 1y ago
I have created a private leaderboard which you can join with `1563228-d419ba6d.` The basic rule is: you are only allowed to use code you wrote yourself. That does include code you wrote before the start of the contest, for example, standard
145.
by fjfaase 1y ago
The temptation to start a competative private leader board will be great, just for the mentioned reason. I have a reference my scores in my CV. The competative part of AoC is one of the things that I find attractive and also has taught me s
146.
by fjfaase 1y ago
Kaem is a very minimal shell, a program that can set environment variables and start other programs using Linux system calls. To compile GNU Mes compiler you need a minimal C compiler. Half of the steps in stage0 consist of building that mi
147.
by fjfaase 1y ago
One can find it out with a decompiler and a lots and lots of free time. Compilers are not trivial programs, especially the ones needed to compile operating systems, with the required optimizations, and there are many ways to obfuscate code.
148.
by fjfaase 1y ago
For the 'full' graph for stage0 see: https://fransfaase.github.io/Emulator/tdiagram.html and note that it even is not completely 'full' leaving out some steps that copy file from one location to ano
149.
by fjfaase 1y ago
Interesting. I reviewd the live-bootstrap project (a project to build a trusted C compiler for building Linux) in the past years, including writing a Linux on i368 simulator/interpreter, and gave a presentation about this at WHY2025.
150.
3D printed maquette of Amsterdam on scale 1:2000(at5.nl)
37 points by fjfaase 1y ago|14 comments

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