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    Sunday, December 27, 2020

    The lexical grammars of Python and Haskell are not regular. What does that mean, and why aren’t they? Computer Science

    The lexical grammars of Python and Haskell are not regular. What does that mean, and why aren’t they? Computer Science


    The lexical grammars of Python and Haskell are not regular. What does that mean, and why aren’t they?

    Posted: 26 Dec 2020 11:36 PM PST

    The Most Popular Programming Languages - 1965/2020 - Statistics and Data

    Posted: 26 Dec 2020 08:18 AM PST

    "The Turing machine is useful because it allows you to reason about what can and can’t be computed, not just on a digital computer, but any possible computer" What does this mean?

    Posted: 26 Dec 2020 11:40 AM PST

    A Turing machine is an abstract model of a computer developed by the famous computer scientist Alan Turing. From a theoretical standpoint, the Turing machine is useful because it allows you to reason about what can and can't be computed, not just on a digital computer, but any possible computer. This model also allows computer scientists to show equivalence between computing systems if they can each simulate a Turing machine. You can use this to show, for example, that there's nothing that you can compute in Java that you can't also compute in assembly language

    The note about being able to prove equivalencies of languages makes sense, that is the interpretation that I am familiar with. But the author also mentions that Turing machines allow us to reason about what can be computed on "any possible computer". What does this mean? What other computers are possible other than digital computers, and how would Turing machines help us there?

    submitted by /u/modustollensiscool
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    Computer Science Resources for 2021

    Posted: 26 Dec 2020 10:57 AM PST

    Crosspost: Do Software Engineers at Microsoft use Surface Devices to code on?

    Posted: 26 Dec 2020 10:14 PM PST

    Why can't my magic square print anything?

    Posted: 26 Dec 2020 10:41 PM PST

    void magic_square(int n){ int arr[n][n]; int i,j,t; for(i=0;i<n;i++){ for(j=0;j<n;j++){ arr[i][j]=0; } } arr[0][n/2]=1; i=0; j=n/2; int ti,tj; for(t=2;t<=n*n;t++){ ti=i;//store original i tj=j; if(i-1<0){ i=n; } if(j-1<0){ j=n; } if(arr[i][j]==0){ i--; j--; }else{ i=ti+1; j=tj; } arr[i][j]=t; } for(i=0;i<n;i++){ for(j=0;j<n;j++){ printf("%d "); } printf("\n"); } } int main(){ magic_square(13); } 
    submitted by /u/JacksonSteel
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    Univariate Linear Regression & Gradient Descent Algorithm Implementation | MACHINE LEARNING

    Posted: 26 Dec 2020 01:04 PM PST

    I implemented the linear regression and gradient descent Machine learning algorithms from scratch for the first time while explaining at every step : https://www.thecsengineer.com/2020/12/univariate-linear-regression-gradient-descent-algorithm-implementation-python.html

    submitted by /u/fitvibesyt
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    Do these examples belong to syntax or semantics and are they handled by syntactic or semantic analysis?

    Posted: 26 Dec 2020 07:35 AM PST

    Can someone please help me

    Posted: 26 Dec 2020 12:39 PM PST

    I have to submit a logo design tomorrow and i have no idea how to create a logo can someone please help me

    submitted by /u/Response-Plastic
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    Government & military technology vs. open source technology

    Posted: 26 Dec 2020 07:05 AM PST

    What I mean by this, if a single person would enough time, could they create anything that big and technologically advanced organizations could do (ex. Google, DARPA, Apple, NSA, etc.)? For example do these organizations also use technology which is available to everyone (such as programming languages like C++, Python, etc., or hardware) and also open source tech?

    I heard that the government & military has technology which is way more advanced than consumer tech, is this true? If yes, how can it be that for example the NSA's XKeyScore was written poorly? Or that the government often hires contractors (ex. lockheed martin)? I don't know about organizations like DARPA though.

    Another question, is open source technology generally more advanced & sophisticated than propriertary (which the government uses too)? Because for example AFAIK most organizations use open source programming languages (see above), right?

    Thanks

    submitted by /u/computer_man789
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