uncleflo
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Docker Basics: How to Use Dockerfiles – The New Stack
Saved by uncleflo on January 16th, 2022.
By using a Docker image, it is not only possible to deploy one container after another, it’s quite easy. Once you’ve pulled the image from a registry (such as Docker Hub), each container can then be deployed with a single docker command. But what happens when you find yourself having to deploy numerous containers (each for a different purpose) from the same image? All of a sudden the management of those containers can get a bit cumbersome. Say, for example, you pull down the latest Ubuntu image for development. Before you can develop with that container, there are a number of modifications you want to make to the image (such as upgrading software and adding the necessary development packages for the job at hand). For this, you could manually edit each image as needed (creating a new image for each necessary variation on the theme), or you could construct a Dockerfile for each variation. Once you have your Dockerfile constructed, you can quickly build the same image over and over, without having to take the time to do it manually. Carefully crafted Dockerfiles can save you considerable time and effort.
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GitHub - peerchemist/finta: Common financial technical indicators implemented in Pandas.
Saved by uncleflo on May 15th, 2021.
TA class is very well documented and there should be no trouble exploring it and using with your data. Each class method expects proper ohlc DataFrame as input. Finta supports over 80 trading indicators.
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word2vec - Google Code Archive
Saved by uncleflo on December 23rd, 2018.
This tool provides an efficient implementation of the continuous bag-of-words and skip-gram architectures for computing vector representations of words. These representations can be subsequently used in many natural language processing applications and for further research. The word2vec tool takes a text corpus as input and produces the word vectors as output. It first constructs a vocabulary from the training text data and then learns vector representation of words. The resulting word vector file can be used as features in many natural language processing and machine learning applications. A simple way to investigate the learned representations is to find the closest words for a user-specified word. The distance tool serves that purpose. For example, if you enter 'france', distance will display the most similar words and their distances to 'france', which should look like:
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Weighting words using Tf-Idf - NLP-FOR-HACKERS
Saved by uncleflo on December 23rd, 2018.
If I ask you “Do you remember the article about electrons in NY Times?” there’s a better chance you will remember it than if I asked you “Do you remember the article about electrons in the Physics books?”. Here’s why: an article about electrons in NY Times is far less common than in a collection of physics books. It is less likely to stumble upon the “electron” concept in NY Times than in a physics book. Let’s consider now the scenario of a single article. Suppose you read an article and you’re asked to rank the concepts found in the article by importance. The chances are you’ll basically order the concepts by frequency. The reason is simply that important stuff would be mentioned repeatedly because the narrative gravitates around them. Combining the 2 insights, given a term, a document and a collection of documents we can loosely say that:importance ~ appearances(term, document) / count(documents containing term in collection).
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HTTPS Preventing Mixed Content
Saved by uncleflo on May 30th, 2018.
Finding and fixing mixed content is an important task, but it can be time-consuming. This guide discusses some tools and techniques that are available to help with the process. For more information on mixed content itself, see What is Mixed Content. Manually finding mixed content can be time consuming, depending on the number of issues you have. The process described in this document uses the Chrome browser; however most modern browsers provide similar tools to help with this process.
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Locking for Concurrency in MySQL
Saved by uncleflo on May 9th, 2018.
The first and most important point is that the primary use of locking is to solve concurrency problems. If scripts are being implemented that write to the database but aren't multistep operations susceptible to the problems described in the last section, locks aren't needed. Simple scripts that insert one row, delete one row, or update one row, and that don't use results of a previous SELECT or data entered by the user as input, don't require a lock.
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PHP Fine Diff
Saved by uncleflo on December 28th, 2017.
This page demonstrate the FineDiff class (as in “fine granularity diff”) I wrote – starting from scratch – to generate a lossless (won't eat your line breaks), compact opcodes string listing the sequence of atomic actions (copy/delete/insert) necessary to transform one string into another (thereafter referred as the “From” and “To” string). The “To” string can be rebuilt by running the opcodes string on the “From” string. The FineDiff class allows to specify the granularity, and up to character-level granularity is possible, in order to generate the smallest diff possible (at the potential cost of increased CPU cycles.)
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Bootstrap 4 Templates & Themes
Saved by uncleflo on December 28th, 2017.
Bootstrap is designed to help people of all skill levels – designer or developer, huge nerd or early beginner. Use it as a complete kit or use it to start something more complex. Unlike other front-end toolkits, Bootstrap was designed first and foremost as a styleguide to document not only its features, but best practices and living, coded examples. Built to support new HTML5 elements and syntax with progressively enhanced components. Bootstrap is tested and supported in major modern browsers like Chrome, Firefox, and Internet Explorer. Bootstrap provides an unparalleled array of features and reusable components that let you hit the ground running.
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Apache CXF
Saved by uncleflo on December 27th, 2017.
Apache CXF™ is an open source services framework. CXF helps you build and develop services using frontend programming APIs, like JAX-WS and JAX-RS. These services can speak a variety of protocols such as SOAP, XML/HTTP, RESTful HTTP, or CORBA and work over a variety of transports such as HTTP, JMS or JBI. CXF includes a broad feature set, but it is primarily focused on the following areas: Web Services Standards Support: CXF supports a variety of web service standards including SOAP, the WS-I Basic Profile, WSDL, WS-Addressing, WS-Policy, WS-ReliableMessaging, WS-Security, WS-SecurityPolicy, WS-SecureConverstation, and WS-Trust (partial). Frontends: CXF supports a variety of "frontend" programming models. CXF implements the JAX-WS APIs. CXF JAX-WS support includes some extensions to the standard that make it significantly easier to use, compared to the reference implementation: It will automatically generate code for request and response bean classes, and does not require a WSDL for simple cases.It also includes a "simple frontend" which allows creation of clients and endpoints without annotations. CXF supports both contract first development with WSDL and code first development starting from Java.
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Securely Hash Passwords with PHP
Saved by uncleflo on December 27th, 2017.
PHP 5.5+ now comes baked with a password_hash function to generate secure, one-way hashes along with a password_verify function to match a hash with the given password—If you’re a PHP developer, you should always be securely storing user passwords, no excuses. Developers have a huge responsibility when handling and storing user-sensitive information, such as a password. We should take extra precaution and the necessary steps to make sure the user’s data is safe and secure*. *Please keep in mind the following implementation is only part of the problem since it handles the data once the web server receives it; however, it does not address the other issue of securely sending the sensitive data over-the-air from the browser to the server, which is why a valid SSL certificate is necessary.
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OAuth 2 Simplified
Saved by uncleflo on July 10th, 2017.
This post describes OAuth 2.0 in a simplified format to help developers and service providers implement the protocol. The OAuth 2 spec can be a bit confusing to read, so I've written this post to help describe the terminology in a simplified format. The core spec leaves many decisions up to the implementer, often based on security tradeoffs of the implementation. Instead of describing all possible decisions that need to be made to successfully implement OAuth 2, this post makes decisions that are appropriate for most implementations.
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The security impact of a new cryptographic library - Daniel J. Bernstein, Tanja Lange, and Peter Schwabe
Saved by uncleflo on July 10th, 2017.
This paper introduces a new cryptographic library, NaCl, and explains how the design and implementation of the library avoid various types of cryptographic disasters suffered by previous cryptographic libraries such as OpenSSL. Specifically, this paper analyzes the security impact of the following NaCl features: no data flow from secrets to load addresses; no data flow from secrets to branch conditions; no padding oracles; centralizing randomness; avoiding unnecessary randomness; extremely high speed; and cryptographic primitives chosen conservatively in light of the cryptanalytic literature.
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The Sodium crypto library (libsodium)
Saved by uncleflo on July 10th, 2017.
Sodium is a modern, easy-to-use software library for encryption, decryption, signatures, password hashing and more. It is a portable, cross-compilable, installable, packageable fork of NaCl, with a compatible API, and an extended API to improve usability even further. Its goal is to provide all of the core operations needed to build higher-level cryptographic tools. Sodium supports a variety of compilers and operating systems, including Windows (with MinGW or Visual Studio, x86 and x86_64), iOS and Android. The design choices emphasize security, and "magic constants" have clear rationales. And despite the emphasis on high security, primitives are faster across-the-board than most implementations of the NIST standards.
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NOTY
Saved by uncleflo on June 30th, 2017.
NOTY is a notification library that makes it easy to create alert - success - error - warning - information - confirmation messages as an alternative the standard alert dialog. Features: Dependency-free, Web Push Notifications with Service Worker support - v3.1.0-beta, UMD, Named queue system, Has 11 layouts, 5 notification styles, 5+ themes, Custom container (inline notifications), Confirm notifications, TTL with timeout option, Progress bar indicator for timed notifications, Supports css animations, animate.css, mojs, bounce.js, velocity and other animation libraries, 2 close options: click, button, API & Callbacks, Custom templating, Document visibility control (blur, focus)
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JavaScript and Scala Implementations of WOOT
Saved by uncleflo on June 21st, 2017.
Yjs is a framework for offline-first p2p shared editing on structured data like text, richtext, json, or XML. It is fairly easy to get started, as Yjs hides most of the complexity of concurrent editing. For additional information, demos, and tutorials visit y-js.org.
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Comparison of different SQL implementations
Saved by uncleflo on June 7th, 2017.
The goal of this page — which is a work in progress — is to gather information relevant for people who are porting SQL from one product to another and/or are interested in possibilities and limits of 'cross-product' SQL. The following tables compare how different DBMS products handle various SQL (and related) features. If possible, the tables also state how the implementations should do things, according to the SQL standard. I will only write about subjects that I've worked with personally, or subjects which I anticipate to find use for in the near future. Subjects on which there are no significant implementation variances are not covered. Beta-versions of software are not examined. I'm sorry about the colors. They are a result of wanting to mark each DBMS differently and at the same time wanting to be relatively nice to printers.
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How to implement a bitmask in php?
Saved by uncleflo on April 12th, 2017.
I'm not sure if bitmask is the correct term. In php, the error_reporting function can be called multiple ways.It's quite simple actually. First a bit of code to demonstrate how it can be implemented. If you don't understand anything about what this code is doing or how it works, feel free to ask additional questions in the comments.
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PHP-based SMPP client lib
Saved by uncleflo on November 28th, 2016.
This is a simplified SMPP client lib for sending or receiving smses through SMPP v3.4. In addition to the client, this lib also contains an encoder for converting UTF-8 text to the GSM 03.38 encoding, and a socket wrapper. The socket wrapper provides connection pool, IPv6 and timeout monitoring features on top of PHP's socket extension. This lib has changed significantly from it's first release, which required namespaces and included some worker components. You'll find that release at 1.0.1-namespaced. This lib requires the sockets PHP-extension, and is not supported on Windows. A windows-compatible version is also available.
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Web Services Discovery
Saved by uncleflo on October 21st, 2016.
Web services provide access to software systems over the Internet using standard protocols. In the most basic scenario there is a Web Service Provider that publishes a service and a Web Service Consumer that uses this service. Web Service Discovery is the process of finding a suitable Web Service for a given task. Publishing a Web service involves creating a software artifact and making it accessible to potential consumers. Web Service Providers augment a Web service endpoint with an interface description using the Web Services Description Language (WSDL) so that a consumer can use the service.
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Google Analytics Content Experiments - A Guide To Website Testing | Testing & Usability
Saved by uncleflo on April 4th, 2015.
In this article I discuss Content Experiments, a tool that can be used to create A/B tests from inside Google Analytics. This tool has several advantages over the old Google Website Optimizer, especially if you are just starting the website testing journey. Content Experiments provide a quick way to test your main pages (landing pages, homepage, category pages) and it requires very few code implementations.
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Home
Saved by uncleflo on April 4th, 2015.
Unreal Engine 4 is a complete suite of game development tools made by game developers, for game developers. From 2D mobile games to console blockbusters and VR, Unreal Engine 4 gives you everything you need to start, ship, grow and stand out from the crowd.
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The Chinese Wall Security Policy by Dr David F.C. Brewer and Dr Michael J. Nash
Saved by uncleflo on September 7th, 2014.
Another concept is that of Chinese Walls, a security model that is also referred to as [the Brewer and Nash Model][8]. From their paper, the model can be described within a database organization as three intermittent levels. At the lowest level, we consider individual items of information, each concerning a single corporation. In keeping with BLP, we will refer to the files in which such information is stored as objects. At the intermediate level, we group all objects which concern the same corporation together into what we will call a company dataset. At the highest level, we group together all company datasets whose corporations are in competition. We will refer to each such group as a conflict of interest class.
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markItUp! Universal Markup Editor
Saved by uncleflo on September 2nd, 2014.
markItUp! universal markup jQuery editor markItUp! is a JavaScript plugin built on the jQuery library. It allows you to turn any textarea into a markup editor. Html, Textile, Wiki Syntax, Markdown, BBcode or even your own Markup system can be easily implemented. markItUp! is not meant to be a “Full-Features-Out-of-the-Box”-editor. Instead it is a very lightweight, customizable and flexible engine made to meet the developer's needs in their CMSes, blogs, forums or websites. markItUp! is not a WYSIWYG editor, and it never will be.
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promises-aplus/promises-spec
Saved by uncleflo on June 20th, 2014.
A promise represents the eventual result of an asynchronous operation. The primary way of interacting with a promise is through its then method, which registers callbacks to receive either a promise's eventual value or the reason why the promise cannot be fulfilled. This specification details the behavior of the then method, providing an interoperable base which all Promises/A+ conformant promise implementations can be depended on to provide. As such, the specification should be considered very stable. Although the Promises/A+ organization may occasionally revise this specification with minor backward-compatible changes to address newly-discovered corner cases, we will integrate large or backward-incompatible only after careful consideration, discussion, and testing.
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LG Website Redesign Concept
Saved by uncleflo on June 7th, 2013.
Screens from a concept presentation to re-imagine LG Electronics global website. The main design goals here were to strip away unecessary UI, increase the size and quality of product imagery, and remove the use of Flash elements. Tightly integrating social media hooks, product review and engaging product demonstrations were also implemented.
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