How to Become a Human Calendar Mentally finding out the day of the week for any date is a skill you can easily learn. You don’t need to be an autistic genius – all it takes is basic memorization effort and some trivial math. When I first learned this technique many years ago, I did it just for fun. With time, I learned to enjoy the convenience of not needing a calendar anymore. The Method To find out the days of the week for any date, use the formula: [day of week] = (yearcode + monthcode + day) mod 7 If you’re not math-inclined, this may look quite scary at first, but don’t worry: using the formula is straightforward. Month and Year Codes The month codes are one of the formula’s most troublesome parts, since they don’t follow a clear logic. January: 1 February: 4 March: 4 April: 0 May: 2 June: 5 July: 0 August: 3 September: 6 October: 1 November: 4 December: 6 We also need the year code, which are also apparently arbitrary. Days of the Week The Calculation Step 1: Get the codes for month and year. 5 means Thursday.
Essential Linux Commands Following are some of the most essential Linux commands which I often use and might be a one page reference for you as well. Use these Linux commands at your own risks. Some of these commands, specially the rm commands, might do harm if not used properly without additional checks. So always think twice before you run the rm commands. I use these commands all the times on my centOS dedicated servers whenever I need it and they work flawlessly. List Show file sizes in KB, MB, GB ls -lah List only directories ls -l | egrep `^d’ List and sort by date ls -t ls -lt Sort by file size ls -S Search/Find find . Above command will find a searchterm in all files in the present directory and will print it on screen. If you want to search for a term in specific folders then use following command. find /home/*/public_html/ -exec grep “searchterm” ‘{}’ \; –print Above command comes very handy when you want to search for any term in all of your websites hosted on a single host. Find files modified by date find . Sort
Uma página com mais de 1000 livros gratuitos sobre programação Em github.com há uma página mantida por mais de 200 pessoas que contribuem frequentemente adicionando novos livros gratuitos relacionados com o mundo da programação. Desde manuais até guias específicos de alguma linguagem, podemos encontrar já mais de 1000 títulos classificados, com links que apontam tanto a documentos em PDF como a páginas web nas quais o conteúdo se encontra em HTML. Este tesouro começou a ser criado em maio de 2013 em stackoverflow.com, criando uma lista cuja fama começou a crescer na rede para gerar outras variações, como a de resrc.io, por exemplo. Em outubro do mesmo ano a lista mudou para github, ganhando muito mais conteúdo graças à colaboração de centenas de usuários que alimentam o projeto. A última atualização da lista foi feita a apenas 3 dias, sinal de que se trata de um diretório de links constantemente vivo.
10 places where anyone can learn to code Teens, tweens and kids are often referred to as “digital natives.” Having grown up with the Internet, smartphones and tablets, they’re often extraordinarily adept at interacting with digital technology. But Mitch Resnick, who spoke at TEDxBeaconStreet, is skeptical of this descriptor. Sure, young people can text and chat and play games, he says, “but that doesn’t really make you fluent.” Mitch Resnick: Let's teach kids to code Fluency, Resnick proposes in this TED Talk, comes not through interacting with new technologies, but through creating them. The former is like reading, while the latter is like writing. The point isn’t to create a generation of programmers, Resnick argues. In his talk, Resnick describes Scratch, the programming software that he and a research group at MIT Media Lab developed to allow people to easily create and share their own interactive games and animations. While we’re at it: bonus!
Mental Math Mental Math - A Guide to Effective Mental Calculations[edit] Note about Notation: This book generally uses the English/U.S. styles of notation. This includes using commas as a way to divide up the thousands in long numbers (e.g. 32,000 = thirty-two thousand), it will use full stops (periods) as decimal points. With good mental math skills you can save yourself time by not needing to pull out a calculator (or cell phone) every time you want to do a task.Mental math skills will improve your ability to estimate results, thus having a better ability to catch errors from computer-derived results. Addition[edit] The foundation of all arithmetic is addition, also known as summing. Changing the Order of Addition[edit] Often when looking for a pattern to help you quickly do an addition problem, it can help to change the order that you add things. Adding Zero, One, or Two[edit] Unless you are completely new to addition, you surely know the pattern for adding I zero. Adding Fives[edit] Example:
CodeBangers | A collection of solutions for the bastard programming problems. eçando a programar em Java (parte 1) Para Começar a Programar em Java é Necessário que você entre no site da sun ou clique aqui para fazer o download da linguagem. Mas antes disso você deve saber. O Java é dividido em Três categorias. Standard Enterprise Mobile Entendendo as Três: Standard – Mais Conhecida como J2se essa categoria do Java é que chamamos de coração do Java. Mobile – Mais Conhecida como J2ME. Enterprise – Mais Conhecida como J2EE.É aqui que está concentrado o grande nome do Java, pois é a categoria direcionada para empresas, logo a mais procurada, a maioria dos profissionais de Java se especializam em J2EE, temos muita mas muita coisa mesmo, componentes EJB(Java Beans), Servlets e dê asas a imaginação. Depois de escolher em que quer programar você deve baixa a linguagem, e a documentação, se for programar em J2EE tem que baixar a linguagem e a documentação da mesma, pois são distintasdas outras. Intalando o JDK e Configurando o JDK no Windows Já está intalado o JDK no seu micro agora vamos configurá-lo
List of paradoxes This is a list of paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. Because of varying definitions of the term paradox, some of the following are not considered to be paradoxes by everyone. This list collects only scenarios that have been called a paradox by at least one source and have their own article. Although considered paradoxes, some of these are based on fallacious reasoning, or incomplete/faulty analysis. Logic[edit] Self-reference[edit] These paradoxes have in common a contradiction arising from self-reference. Barber paradox: A barber (who is a man) shaves all and only those men who do not shave themselves. Vagueness[edit] Ship of Theseus (a.k.a. Mathematics[edit] Statistics[edit] Probability[edit] Infinity and infinitesimals[edit] Geometry and topology[edit] The Banach–Tarski paradox: A ball can be decomposed and reassembled into two balls the same size as the original.
Learn the Basics of Coding Allowing remote access to your home computer is not the best advice, especially for someone new to programming and security. However, we all do it. Just be aware that you are risking all the data and probably all the other systems on your home network in doing this. Secure web programming is hard, really hard. If you are writing code for your own internal use, working code is the goal. When you write code for others, it needs to work with strange inputs. Possibly the most important item to learn is that just because something works, that doesn't mean it is correct or secure. End User Programming If you are on MS-Windows and want to make your PC do things, check out PowerShell programming. If you are on Linux or OSX, check out bash programming. Power User Programming If you want to create cross-platform programs that can have GUIs and aren't CPU intensive, while learning simple and advanced programming techniques, check out Python. Web programming requires a multitude of skills.
Duvida de melhor Livro para programação em Java. [RESOLVIDO] eu acho que o viny pegou pesado com o rapaz... acho que podemos fazer um programa com java, sem saber muitas destas coisas aí, propostas. inclusive ele se disse iniciante, então certamente um iniciante, não saberá quase nada disso, eu que tenho alguma experiencia e o curso técnico( que faltou o estágio, mas está em andamento), já fiquei em dúvida, mas por outro lado são coisas que voce resolve em 20 minutos eu garanto. estas respostas, vc pode dar e assimila-las em 20 minutos. por outro lado conhecer os comandos java é algo que leva tempo e estudo, experiencia. eu recomendei um livro bacana ali, tanto para iniciantes ou médios, e para quem gosta de swing (swing de java é claro ) dá boas noções de textfields, botões, ações do mouse, botões, desenhar na tela, mostrar imagens,etc. não assustemos as pessoas, para não transformar a informatica ou programação num monstro inacessivel. certo não desprezar coisas mais avançadas, mas talvez tenham sua hora. valeu galera.!!
8 Ways to Sleep Better Steps Method 1 Getting to Sleep Quickly (Easy Methods) <img alt="Image titled Sleep Better Step 1" src=" width="728" height="546" class="whcdn">1Take a nice warm bath or shower in the evening. <img alt="Image titled Sleep Better Step 6" src=" width="728" height="546" class="whcdn">6Add gentle sounds. Method 2 Moderating your Diet <img alt="Image titled Sleep Better Step 13" src=" width="728" height="546" class="whcdn">1Eat dinner at least three hours before bedtime. Method 3 Making Your Bed and Bedroom Welcoming Method 4 Changing Your Daily Routine Method 5 Medication for Better Sleep Reader Questions and Answers Tips Warnings