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Buna. Ceva de genul asta: returnInt :: Expr -> Int returnInt (Value x) = x returnInt (Symbol x) = length x Unde inlocuiesti length x cu ceva care sa intoarca un intreg dintr-un string in functie de ce ai nevoie. Daca vrei sa iti intoarca eroare pentru cazul cu string: returnInt (Symbol x) = error "Eroareeee"

dai -1 la newbie ? Aici se da -1 degeaba ?

Acel moment când 2 newbie cu un post postează lucruri mai interesante decât alții cu sute de postări. PS: @Ana-Cristina e profă la FMI (Haskell, Programare Declarativă, Programare Logică și altele) și eu i-am arătat topicul. Așa că veniți la FMI la facultate, că s-au mai schimbat puțin mentalitățile.

Nu-mi inspiri incredere. Ai facut doua greseli gramaticale + spatiu inainte de virgula.

This is where the trouble starts. You’ve seen them. They are all over the web. Sometimes they contain valuable information or warn you before closing an important browser window. But most of the time they are really annoying and almost everybody clicks on “Ok” without really reading them. I’m talking about alert boxes. If you hear “XSS” you almost immediately think of them. And that’s a huge problem. Yes, they are a good way to show that it’s possible to to execute JavaScript on a vulnerable website. And with document.domain you also show that it is running under the sites context. But what does that mean to a website owner? He just sees an annoying box and if he doesn’t read about the dangers of XSS he won’t fully understand what it is capable of. But what can we do once we located such a flaw on a website? Stealing session cookies won’t work most of the time as they are often httponly which basically means for us that it’s not readable by JavaScript. There’s a way to abuse an XSS flaw nonetheless and I’ll show you how we can escalate it to a full blown RCE, considering we know a thing or two about the admin panel (guessing might also help sometimes). In this case we escalate our privileges from an unauthenticated remote user to www-data. The vulnerable software is described like this on wikipedia: “CMS Made Simple has a web-based admin section for theme, template, and stylesheet development, installing and updating add-on modules, configuring page content blocks, and user groups and permissions.” SSRF By default CMSMS has an activated module called “CMSPrinting”. It shows you a page in print mode. When we look at the url it’s generating we see one parameter that looks suspicious. It’s a base64 encoded string. When we decode it it shows us the following link: http://172.16.15.142/index.php?showtemplate=false That host is the IP of my lab machine and the false showtemplate parameter removes unnecessary stuff from the page. Of course I immediately tried to include a local file and a remote website. Both didn’t work unfortunately. There must be something in place to prevent us from including any website we want. When we look inside the source code we see this: You see that in order to retrieve content the decoded url parameter has to start with the root url. In my case it was http://172.16.15.142 . You already know where this is going. Since there is no slash at the end we can easily create a subdomain called 172.16.15.142 and make the cms read a file from our Server. This looks totally pointless first. We can’t execute PHP code that way and we don’t get any sensitive files. We can only mirror something from our Server to the page. But if you think about it, that’s exactly what we need to make it an… XSS You think of the alert box again, don’t you? Now you are going to be disappointed. This post is alert free. Instead we escalate it further. Since we are able to create a file on our own server that will be retrieved by the victim cms and then mirrored to the victims browser we don’t have to worry about getting caught by any XSS filter or waf. We can simply write our payload inside our local file. Here’s what it’s doing: First we use JavaScript to get the content of the Admin panel, which contains a CSRF token that has to be passed for any action the admin executes in the ACP. We then extract this key. CSRF With our obtained token and the XSS flaw we can make requests on behalf of the administrator. What we are interested in is the file upload functionality that’s also included in the standard installation. What do we do? We now have to simulate a file upload to the CMS via XSS. This can be done with an ajax post request. RCE We now upload a php file containing a reverse shell. To trigger it we create an img tag pointing to our uploaded file. And there you go. SSRF->XSS->CSRF->RCE If you have XSS on your website in almost every case your CSRF protections are useless. This can lead to account takeover, privilege escalation and also to a complete compromise of your Server. With this in mind, tell me: is an alert box really a good way to show a website owner the dangers of XSS? You decide. https://3.sendvid.com/hajs932z.mp4 Articol preluat de pe site-ul https://blog.asdizzle.com Toate drepturile rezervate asdizzle_

Salut daca vrei sa descarci cursuri udemy gratis cauta-le dupa nume pe kat.cr sau pe the pirate bay sigur o sa gasesti majoritatea. Sau de pe udemydownloader.com dar asta e plin de reclame

How to pass a programming interview by Ammon Bartram This post started as the preparation material we send to our candidates, but we decided to post it publicly. Being a good programmer has a surprisingly small role in passing programming interviews. To be a productive programmer, you need to be able to solve large, sprawling problems over weeks and months. Each question in an interview, in contrast, lasts less than one hour. To do well in an interview, then, you need to be able to solve small problems quickly, under duress, while explaining your thoughts clearly. This is a different skill [1]. On top of this, interviewers are often poorly trained and inattentive (they would rather be programming), and ask questions far removed from actual work. They bring bias, pattern matching, and a lack of standardization. Running Triplebyte, I see this clearly. We interview engineers without looking at resumes, and fast-track them to on-sites at YC companies. We’ve interviewed over 1000 programmers in the last nine months. We focus heavily on practical programming, and let candidates pick one of several ways to be evaluated. This means we work with many (very talented) programmers without formal CS training. Many of these people do poorly on interviews. They eat large sprawling problems for breakfast, but they balk at 45-min algorithm challenges. The good news is that interviewing is a skill that can be learned. We’ve had success teaching candidates to do better on interviews. Indeed, the quality that most correlates with a Triplebyte candidate passing interviews at YC companies is not raw talent, but rather diligence. I fundamentally do not believe that good programmers should have to learn special interviewing skills to do well on interviews. But the status quo is what it is. We’re working at Triplebyte to change this. If you’re interested in what we’re doing, we’d love you to check out our process. In the meantime, if you do want to get better at interviewing, this blog post describes how we think you can most effectively do so. 1. Be enthusiastic Enthusiasm has a huge impact on interview results. About 50% of the Triplebyte candidates who fail interviews at companies fail for non-technical reasons. This is usually described by the company as a “poor culture fit”. Nine times out of ten, however, culture fit just means enthusiasm for what a company does. Companies want candidates who are excited about their mission. This carries as much weight at many companies as technical skill. This makes sense. Excited employees will be happier and work harder. The problem is that this can be faked. Some candidates manage to convince every company they talk to that it’s their dream job, while others (who are genuinely excited) fail to convince anyone. We’ve seen this again and again. The solution is for everyone to get better at showing their enthusiasm. This is not permission to lie. But interviewing is like dating. No one wants to be told on a first date that they are one option among many, even though this is usually the case. Similarly, most programmers just want a good job with a good paycheck. But stating this in an interview is a mistake. The best approach is to prepare notes before an interview about what you find exciting about the company, and bring this up with each interviewer when they ask if you have any questions. A good source of ideas is to read the company’s recent blog posts and press releases and note the ones you find exciting. This idea seems facile. I imagine you are nodding along as you read this. But (as anyone who has ever interviewed can tell you) a surprisingly small percentage of applicants do this. Carefully preparing notes on why you find a company exciting really will increase your pass rate. You can even reference the notes during the interview. Bringing prepared notes shows preparation. 2. Study common interview concepts A large percentage of interview questions feature data structures and algorithms. For better or worse, this is the truth. We gather question details from our candidates who interview at YC companies (we’ll be doing a in-depth analysis of this data in a future article), and algorithm questions make up over 70% of the questions that are asked. You do not need to be an expert, but knowing the following list of algorithms and data structures will help at most companies. Hash tables Linked lists Breadth-first search, depth-first search Quicksort, merge sort Binary search 2D arrays Dynamic arrays Binary search trees Dynamic programming Big-O analysis Depending on your background, this list may look trivial, or may look totally intimidating. That’s exactly the point. These are concepts that are far more common in interviews than they are in production web programming. If you’re self-taught or years out of school and these concepts are not familiar to you, you will do better in interviews if you study them. Even if you do know these things, refreshing your knowledge will help. A startlingly high percentage of interview questions reduce to breadth-first search or the use of a hash table to count uniques. You need to be able to write a BFS cold, and you need to understand how a hash table is implemented. Learning these things is not as hard as many of the people we talk to fear. Algorithms are usually described in academic language, and this can be off-putting. But at its core, nothing on this list is more complicated than the architecture of a modern web app. If you can build a web app (well), you can learn these things. The resource that I recommend is the book The Algorithm Design Manual by Steven Skiena. Chapters 3 through 5 do a great job of going over this material, in a straightforward way. It does use C and some math syntax, but it explains the material well. Coursera also has several good algorithms courses. This one, in particular, focuses on the concepts that are important in interviews. Studying algorithms and data structures helps not only because the material comes up in interviews, but also because the approach to problems taken in an algorithm course is the same approach that works best in interviews. Studying algorithms will get you in an interview mindset. 3. Get help from your interviewer Interviewers help candidates. They give hints, they respond to ideas, and they generally guide the process. But they don’t help all candidates equally. Some programmers are able to extract significant help, without the interviewer holding it against them. Others are judged harshly for any hints they are given. You want to be helped. This comes down to process and communication. If the interviewer likes your process and you communicate well with them, they will not mind helping. You can make this more likely by following a careful process. The steps I recommend are: Ask questions Talk through a brute-force solution Talk through an optimized solution Write code After you are asked an interview question, start by clarifying what was asked. This is the time to be pedantic. Clarify every ambiguity you can think of. Ask about edge cases. Bring up specific examples of input, and make sure you are correct about the expected output. Ask questions even if you’re almost sure you know the answers. This is useful because it gives you a chance to come up with edge cases and fully spec the problem (seeing how you handle edge-cases is one of the main things that interviewers look for when evaluating an interview), and also because it gives you a minute to collect your thoughts before you need to start solving the problem. Next, you should talk through the simplest brute-force solution to the problem that you can think of. You should talk, rather than jump right into coding, because you can move faster when talking, and it’s more engaging for the interviewer. If the interviewer is engaged, they will step in and offer pointers. If you retreat into writing code, however, you'll miss this opportunity. Candidates often skip the brute-force step, assuming that the brute-force solution to the problem is too obvious, or wrong. This is a mistake. Make sure that you always give a solution to the problem you’ve been asked (even if it takes exponential time, or an NSA super computer). When you’ve described a brute-force solution, ask the interviewer if they would like you to implement it, or come up with more efficient solution. Normally they will tell you to come up with a more efficient solution. The process for the more efficient solution is the same as for the brute force. Again talk, don’t write code, and bounce ideas off of the interviewer. Hopefully, the question will be similar to something you’ve seen, and you’ll know the answer. If that is not the case, it’s useful to think of what problems you’ve seen that are most similar, and bring these up with the interviewer. Most interview questions are slightly-obscured applications of classic CS algorithms. The interviewer will often guide you to this algorithm, but only if you begin the process. Finally, after both you and your interviewer agree that you have a good solution, you should write your code. Depending on the company, this may be on a computer or a whiteboard. But because you’ve already come up with the solution, this should be fairly straightforward. For extra points, ask your interviewer if they would like you to write tests. 4. Talk about trade-offs Programming interviews are primarily made up of programming questions, and that is what I have talked about so far. However, you may also encounter system design questions. Companies seem to like these especially for more experienced candidates. In a system design question, the candidate is asked how he or she would design a complex real-world system. Examples include designing Google maps, designing a social network, or designing an API for a bank. The first observation is that answering system design questions requires some specific knowledge. Obviously no one actually expects you to design Google maps (that took a lot of people a long time). But they do expect you to have some insight into aspects of such a design. The good news is that these questions usually focus on web backends, so you can make a lot of progress by reading about this area. An incomplete list of things to understand is: HTTP (at the protocol level) Databases (indexes, query planning) CDNs Caching (LRU cache, memcached, redis) Load balancers Distributed worker systems You need to understand these concepts. But more importantly, you need to understand how they fit together to form real systems. The best way to learn this is to read about how other engineers have used the concepts. The blog High Scalability is a great resource for this. It publishes detailed write-ups of the back-end architecture at real companies. You can read about how every concept on the list above is used in real systems. Once you’ve done this reading, answering system design questions is a matter of process. Start at the highest level, and move downward. At each level, ask your interviewer for specifications (should you suggest a simple starting point, or talk about what a mature system might look like?) and talk about several options (applying the ideas from your reading). Discussing tradeoffs in your design is key. Your interviewer cares less about whether your design is good in itself, and more about whether you are able to talk about the trade-offs (positives and negatives) of your decisions. Practice this. 5. Highlight results The third type of question you may encounter is the experience question. This is where the interviewer asks you to talk about a programming project that you completed in the past. The mistake that many engineers make on this question is to talk about a technically interesting side-project. Many programmers choose to talk about implementing a neural network classifier, or writing a Twitter grammar bot. These are bad choices because it’s very hard for the interviewer to judge their scope. Many candidates exaggerate simple side projects (sometimes that never actually worked), and the interviewer has no way to tell if you are doing this. The solution is to choose a project that produced results, and highlight the results. This often involves picking a less technically interesting project, but it’s worth it. Think (ahead of time) of the programming you’ve done that had the largest real-world impact. If you’ve written a iOS game, and 50k people have downloaded it, the download number makes it a good option. If you’ve written an admin interface during an internship that was deployed to the entire admin staff, the deployment makes it a good thing to talk about. Selecting a practical project will also communicate to the company that you focus on actual work. Programmer too focused on interesting tech is an anti-pattern that companies screen against (these programmers are sometimes not productive). 6. Use a dynamic language, but mention C I recommend that you use a dynamic language like Python, Ruby or JavaScript during interviews. Of course, you should use whatever language you know best. But we find that many people try interviewing in C , C++ or Java, under the impression these are the “real’ programming languages. Several classic books on interviewing recommend that programmers choose Java or C++. At startups at least, we’ve found that this is bad advice. Candidates do better when using dynamic languages. This is true, I think, because of dynamic languages’ compact syntax, flexible typing, and list and hash literals. They are permissive languages. This can be a liability when writing complex systems (a highly debatable point), but it’s great when trying to cram binary search onto a whiteboard. No matter what language you use, it’s helpful to mention work in other languages. An anti-pattern that companies screen against is people who only know one language. If you do only know one language, you have to rely on your strength in that language. But if you’ve done work or side-projects in multiple languages, be sure to bring this up when talking to your interviewers. If you have worked in lower-level languages like C, C++, Go, or Rust, talking about this will particularly help. Java, C# and PHP are a problematic case. As we described in our last blog post, we’ve uncovered bias against these languages in startups. We have data showing that programmers using these languages in the interview pass at a lower rate. This is not fair, but it is the truth. If you have other options, I recommend against using these languages in interviews with startups. 7. Practice, practice, practice You can get much better at interviewing by practicing answering questions. This is true because interviews are stressful, but stress harms performance. The solution is practice. Interviewing becomes less stressful with exposure. This happens naturally with experience. Even within a single job search, we find that candidates often fail their initial interviews, and then pass more as their confidence builds. If stress is something you struggle with, I recommend that you jumpstart this process by practicing interview stress. Get a list of interview questions (the book Cracking the Coding Interview is one good source) and solve them. Set a 20-minute timer on each question, and race to answer. Practice writing the answers on a whiteboard (not all companies require this, but it’s the worst case, so you should practice it). A pen on paper is a pretty good simulation of a whiteboard. If you have friends who can help you prepare, taking turns interviewing each other is great. Reading a lot of interview questions has the added benefit of providing you ideas to use when in actual interviews. A surprising number of questions are re-used (in full or in part). Even experienced (and stress-free) candidates will benefit from this. Interviewing is a fundamentally different skill from working as a programmer, and it can atrophy. But experienced programers often (reasonably) feel that they should not have to prepare for interviews. They study less. This is why junior candidates often actually do better on interview questions than experienced candidates. Companies know this, and, paradoxically, some tell us they set lower bars on the programming questions for experienced candidates. 8. Mention credentials Credentials bias interviewers. Triplebyte candidates who have worked at a top company or studied at a top school go on to pass interviews at a 30% higher rate than programmers who don’t have these credentials (for a given level of performance on our credential-blind screen). I don’t like this. It’s not meritocratic and it sucks, but if you have these credentials, it’s in your interest to make sure that your interviewers know this. You can’t trust that they’ll read your resume. 9. Line up offers If you’ve ever read fund-raising advice for founders, you’ll know that getting the 1st VC to make an investment offer is the hardest part. Once you have one offer, more come pouring in. The same is true of job offers. If you already have an offer, be sure to mention this in interviews. Mentioning other offers in an interview heavily biases the interviewer in your favor. This brings up the strategy of making a list of the companies you’re interested in, and setting up interviews inreverse order of interest. Doing well earlier in the process will increase your probability of getting an offer from you number one choice. You should do this. Conclusion Passing interviews is a skill. Being a great programmer helps, but it’s only part of the picture. Everyone fails some of their interviews, and preparing properly can help everyone pass more. Enthusiasm is paramount, and research helps with this. As many programmers fail for lacking enthusiasm as fail for technical reasons. Interviewers help candidates during interviews, and if you follow a good process and communicate clearly, they will help you. Practice always helps. Reading lots of interview questions and inuring yourself to interview stress will lead to more offers. This situation is not ideal. Preparing for interviews is work, and forcing programmers to learn skills other than building great software wastes everyone’s time. Companies should improve their interview processes to be less biased by academic CS, memorized facts, and rehearsed interview processes. This is what we’re doing at Triplebyte. We help programmers get jobs without looking at resumes. We let programmers pick one of several areas in which to be evaluated, and we study and improve our process over time. We’d love to help you get a job at a startup, without jumping through these hoops. You can get started here. But the status quo is what it is. Until this changes, programmers should know how to prepare. Thanks to Jared Friedman, Emmett Shear, Garry Tan, Alexis Ohanian and Daniel Gackle for reading drafts of this. Sursa: http://blog.triplebyte.com/how-to-pass-a-programming-interview

Daca te referi strict la vizite de la google ar fi trebuit deja sa ai site-ul vizitat deja de Google, iar daca te referi la vizite prin intermediul Google atunci: Din momentul in care esti indexat si oamenii cauta ce ai tu.

Buna nu stiu daca este voie sa postez un astfel de link inca... daca nu am voie va rog sa il stergeti am zis sa prezint si eu un tutorial pe care l-am facut in urma cu ceva timp si mai exact instalarea aparatului de minat pe bitcoin antminer s7 sa vedeti cum suna "nebunia asta de aparat" Instalare Antminer s7 MAi am si unboxing si pornirea antminer s5 pe care il gasiti pe linkul de mai jos sa faceti o comparatie de sunet Home miningul este pe sfarsite incepand cu noua serie de aparate antminer s7. Instalare antminer s5

Asta ar trebui să zică toți utilizatorii de pe forum.

Dacă te gândești să-ți dai oamenii afară și să bagi proiectele pe upwork, ești mare patron.

Edu * Ro este o distribuție Linux bazata pe Debian Jessie, construita special pentru activități didactice . Distributia construită pe scheletul subfamiliei Debian, conține o multitudine de programe cu licențe libere pentru învățământ, începând cu clasele primare și terminând cu învățământul universitar, precum și diverse programe utilitare cu licențe libere. Distributia contine un installer cu ajutorul căruia pot fi instalate cu un simplu click diverse aplicații specifice pentru matematică, fizică, chimie, geografie, biologie, statistică, electronică, radioamatori, grafică, birou, muzică, editare audio și video, programare, grafică sunt acompaniate de laboratoare virtuale interactive, precum și un microscop virtual. Un laborator de robotică completează cu succes lista de programe pentru educație. O secțiune specială adresată profesorilor, permite acestora crearea de diverse publicații, atât pentru uzul elevilor, cât și pentru publicare online. Installerul permite ca un număr de peste 100 de programe pentru educație sa fie instalate foarte ușor cu un simplu click. O parte din programe sunt specifice distribuției Debian, iar altele sunt create și utilizate de diverse universități de renume din SUA și Europa. Interfața grafică bazata pe MATE , oferă un compromis între un consum redus de resurse și o interfață modernă și intuitivă, astfel încât distribuția poate rula fără probleme pe calculatoare mai vechi existente în unitățile de învățământ. Majoritatea programelor pentru educație prezente în această distribuție sunt sub licența GNU sau BSD, astfel încât costurile se reduc doar la mentenanță. Distribuția poate fi utilizată ca Live DVD, se poate instala ca sistem de operare independent pe hard disk, cât și în cadrul unei aule (experimental). Edu * Ro beta 2 distributie pentru educatie poate fi gasita aici: http://eduro.gnulinux.ro Canal video Edu * Ro https://www.youtube.com/channel/UCEaJUh9rQ3o5tkDpHOyub9g Grup de dezvoltare Edu * Ro https://www.facebook.com/groups/EduRoLinux/ Lista programe instalabile cu ajutorul unui simplu click: Matematica -Cantor -QtOctave -Relational -Rocs -wxMaxima -Euler -eXtrema -FreeMat -Galculator -GeoGebra -Geomview -KAlgebra -Kbruch -Kig -Mathomatic Fizica -Physion -Step -Tracker -Lightspeed Biologie -BALLView -Clustalx -Gwyddion -Cytoscape -SeaView -Treeviewx -StarBiochem Chimie -Datawarrior -Bkchem -Chemtool -GChemPaint Chemical Structures Editor -Gelemental -Jmol -Rasmol -Xmakemol -Avogadro -Cain -EasyChem Chemical Structures Editor -GDIS -Gperiodic -Pymol -Kalzium -Viewmol Profesor -EdiLIM -eXe Electronica -Eagle -Guido Van Robot -Oregano -Qelectrotech -Fritzing -Logisim -QsapecNG Grafica -Art of Illusion -Synfig Studio -Inkscape -K-3D -yEd -Blender -Wings3d -Dia Geografie -Celestia -Kstars -Planets -Google Earth -KGeography -Marble -Stellarium -Qgis Genetica -StarGenetics -StarORF Internet -Chromium -Skype -Midori -Teamviewer -Italc -Iceweasel -Filezilla -NoMachine Programare -Code::Blocks -Ninja IDE -Texstudio -Visual Studio Code -Phpmyadmin -Codelite -Kdevelop -QT4 Creator -SQL Workbench -Eclipse -Bluefish -Netbeans -Anjuta -Geany Arhitectura -LibreCad -FreeCad -BrlCad Multimedia -Ardour -Hydrogen -K3b -Audacious -Audacity -Lives -Vokoscreen -Qtractor -Rosegarden -Vlc -Gnome Mplayer -Kazam -Natron2 Robotica -V-REP-PRO-EDU -Arduino Statistica -Qtiplot -Scidavis -Gretl Virtual Lab -Virtual Microscope Virtuallab -Chimera -Virtual lab Chemistry -MaxFEM -Molecular Workbench -PhET -Logger Pro -VGLII -OpenRocket Diverse -Klettres -KTurtle -Little Wizard -Tux Paint -KTouch -KWordQuiz -Parley -Libre Office -PDFStudio Instalare Code::Blocks

Am scris de pe telefon, scuze daca am scris gresit, vad ca esti deranjat

In 10 minute se da drumu la vizite de pe google, fii pe faza poate prinzi si tu ceva.

E de la autocorrect.