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If you are going to crawl sites you better use Ferrum or Vessel because you crawl, not test.

session = ActionDispatch::Integration::Session.new(Rails.application) response = session.post("/mypath", my_params: "go_here")

I used the above to test what happens to the user if a POST happens in another session (via WebSockets), so a form wouldn't cut it.

I also think being able to self-host and export parts of your data to share with others would be great.

why is there so little correlation between students’ performance in their physics courses and their ability to do physics research?

We used to construct mobile websites and apps using native technology, but there are now a lot more options on the market. 

So when should you use rbspy, and when should you use stackprof? The two tools are actually used in pretty different ways! rbspy is a command line tool (rbspy record --pid YOUR_PID), and StackProf is a library that you can include in your Ruby program and use to profile a given section of code.

Here is the list of the best 15 web app ideas. Take a look –

Where around hooks shine is when you want to run an example within a block. For instance, if your database library offers a transaction method that receives a block, you can use an around to cleanly open and close the transaction around the example.

Top 20 Web Development Tools To Build A Web Application

With the app market growing insanely, there is much more scope for newer apps to succeed. Well, it seems that the utility app development market, too, will see a boom soon.

Capybara can get us part of the way there. It allows us to work with an API rather than manipulating the HTML directly, but what it provides isn't an application specific API. It gives us low-level API methods like find, fill_in, and click_button, but it doesn't provide us with high-level methods to do things like "sign in to the app" or "click the Dashboard item in the navigation bar".

 Meaningful discussions may be replaced with comments about the weather or other topics of light conversation. Doctors may spend less time with patients after their prognosis becomes poor. Why do others begin to withdraw?

Beginning in their 60s, though, men and women lose bone mass at roughly the same rate.

Maybe once the core onError lifecycle is implemented (if maintainers decide to go that way) everyone will discover you're right and an implementation will be built in. I think that's probably what's going to happen. But until real life has proved it, it's usually best to go for the smallest most broadly applicable solution. I can definitely imagine <svelte:error> eventually being a thing, but it's a pretty dramatic change compared to an added importable function.

The key thing about the REST approach is that the server addresses the client state transitions. The state of the client is almost totally driven by the server and, for this reason, discussions on API versioning make little sense, too. All that a client should know about a RESTful interface should be the entry point. The rest should come from the interpretation of server responses.

Web3 promises rewards — maybe even a kind of justice — for “users”, but Ethereum doesn’t know anything about users, only wallets. One user can control many wallets; one bot can con­trol many wallets; Ethereum can’t tell the difference, doesn’t par­tic­u­larly care. Therefore, Web3’s gov­er­nance tools are appro­pri­ate for decision-making processes that approx­i­mate those of an LLC, but not for anything truly democratic, which is to say, any­thing that respects the uniform, unearned — unearned!—value of per­son­hood.

Avoid These Costly Mistakes During Web Application DevelopmentDmitryCEOCustom SoftwareHomeBlogTechnologyAvoid These Costly Mistakes During Web Application DevelopmentPublishedJan 16, 2020UpdatedJan 16, 202015 min readAccording to the Startup Genome Report, over 90% of startups fail after launch. There can be different reasons like skipping the market research, hiring wrong specialists, too early scaling, and so on. However, one of the most important elements of startup success is the product you provide. Neglecting estimates, avoiding the MVP stage, designing unnecessary functionality, and saving time on testing may become fatal errors that can result in a complete failure. In this article, we will tell you about the most costly mistakes you should avoid during web app development to succeed after product launch.

Finally, I think Actions are great for animations, because you will definitely need to apply the same logic to many different elements. One of my favorite examples are FLIP animations, where a change in DOM position can be animated. For example shuffling a list of items. I will not dive deep into the topic in this article: I've written about some techniques in this article about FLIP animations in React and in this article about how to create spring animations with Web Animation API. Although they are not about Svelte, at the end of the day it all boils down to manipulating the HTML element directly. And Svelte Actions are a great place to do it.

Rigorous and Pragmatic Methods & Tools

An application migration plan is a process to shift an existing software from a software computing environment to another. (here computing environment refers to laptop, server, cloud, data centres, and it goes on)

Choosing a PWA Development Company: Key Points to ConsiderAlinaE-Commerce & SaaS StrategistDmitryChief Executive OfficerPWAHomeBlogEntrepreneurshipChoosing a PWA Development Company: Key Points to ConsiderNov 10, 202012 min readThe term “progressive web application” has been floating around recently. So what are PWAs: a buzzword or a decent alternative to native apps? Codica team firmly believes that this technology can be beneficial for businesses. It is not by chance that we have added PWA apps to our list of prominent web development trends for 2020. This technology offers users an app-like experience. Besides, progressive web applications are easy to install, launch, and maintain and they cost less compared with building native apps. To launch a successful progressive web application, you need to partner with a reliable PWA development company. Here comes the most difficult part. There are plenty of software houses offering similar services. The question is: How do you find the right one? To make things easier for you, we covered the key factors you need to consider while choosing a PWA development partner. Besides, in our article you will find out why building a PWA can be challenging even for experienced software development companies.

Vue.js vs React: Comparison of Two Most Popular JS FrameworksEugeneFrontend DeveloperVueReactHomeBlogDevelopmentVue.js vs React: Comparison of Two Most Popular JS FrameworksSep 23, 202126 min readNowadays, every company aims to create a high-quality web solution within a short time frame. To put it into practice, the developers’ community chooses from many JavaScript libraries and frameworks and debates to find the best one. At Codica, we consider Vue.js and ReactJS the most rapidly developing tools for the front-end development for many reasons. While these technologies can help create the same products and applications, both of them have pros and cons. The purpose of this article is to compare Vue.js vs React.js in different aspects: from general information to technical features. Both these web development tools have mature communities, wide support and popularity, but Vue.js is a framework and React is a library. So, why do we compare oranges and apples?

2015, c. 36, s. 171

Creating a community network ontology is therefore about much more than just knowledge representation. It also requires us to think about how this conceptual knowledge model affects real-world knowledge creation and application processes, in our case concerning participatory community network mapping. Its participatory nature means that we need to think hard about how to explicitly involve the community in the construction, evolution, and use of the ontology.

Codica Named a Top E-commerce Web Development Company by ManifestIrina TurchanovaSaaS Growth ResearcherAwardsHomeBlogCodica WayCodica Named a Top E-commerce Web Development Company by ManifestAug 26, 202110 min readCodica is a professional team that provides software consultancy services to all-sized businesses. We have been building unique and complex custom web solutions for more than six years, helping our customers reach their business goals and prosper.

An extensible plugin architecture allows for customizing your workflow or even making Yarn a package manager for non-JavaScript projects.

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Question and Answer Website Development: Functionality and Best PracticesTimur YilmazTech JournalistMarketplaceProduct GuideHomeBlogEntrepreneurshipQuestion and Answer Website Development: Functionality and Best PracticesAug 25, 202117 min readSocial media is a jumping-off point for many people to get informed. Yet, on such platforms, users are more likely to voice opinions rather than share knowledge. That's when the websites to ask questions become a good help. For example, Quora's monthly active user base grew from 200 million to 300 million in 2018 alone. In 2021, the 6.6 million downloads of the Reddit app represented a 128% increase over the previous year. What is a selling point for this kind of platform and how to build one? How do they remain beneficial in a years-long run? How Q&A websites managed to survive social network dominance? Read on to find out.

How to Build a SaaS Startup in 10 Smart StepsAlina NechvolodE-Commerce & SaaS StrategistSaaSStartupHomeBlogEntrepreneurshipHow to Build a SaaS Startup in 10 Smart StepsJul 30, 202018 min readSaaS solutions are noted for their flexibility. This quality serves as a key reason why 37% of businesses switch to cloud-based systems. Given their growing popularity, the idea of launching a company offering SaaS products seems very lucrative. So, how to build a SaaS startup? In this article, we will answer this question, and guide you through the main stages of starting a SaaS business. You will learn to make market research and write a lean plan. Also, we will discuss the most suitable pricing models and effective marketing strategies. Finally, you will know how to track the progress of your startup.

Mobile Application Development

Indeed, the Spotify App has become the king of music streaming. So let’s take a deep dive into what makes the app unique and loved by its users.

How to Make a React Progressive Web Application (PWA)Eugene VolkovFrontend DeveloperKate KikidzhanCloud & SaaS Product ResearcherReactJavaScriptPWAHomeBlogDevelopmentHow to Make a React Progressive Web Application (PWA)Oct 7, 202021 min readThe early bird catches the worm. But the situation was not so favourable back in 2007 when Steve Jobs proposed the idea of web applications to be the model for iPhone Apps. Back then, the tech community was not yet ready to bring a huge interest in web apps. But since 2015, tech giants like Google and Microsoft have been preparing the tech ground for progressive web apps (or simply – PWAs). And now, PWA became a must-have technology for both giant corporations and small startups. Twitter, Starbucks, Google, and Aliexpress use progressive web apps to boost their online presence. At Codica, we have been helping our customers to develop their businesses by building robust PWA for our customers since 2015. That is why we have created this comprehensive guide on how to create a PWA with React. Also, you will see the most prominent progressive web app examples.

Best SaaS Product Ideas You Should Try in 2021Kate KikidzhanCloud & SaaS Product ResearcherSaaSStartupHomeBlogEntrepreneurshipBest SaaS Product Ideas You Should Try in 2021May 6, 202117 min readIn 2020, the cloud market and its most notable players, such as Google, Microsoft, Adobe, and Salesforce, cannot be taken lightly. Cloud software distribution, namely SaaS, PaaS, and IaaS models, invaded the technology world and will not go away any time soon. At the same time, the COVID-19 pandemic increased the importance of remote work for a business to survive, as well as high profitability. That is why the demand for SaaS solutions that tend to be more cost-effective has risen markedly. And we believe that it is better to ride the SaaS wave now rather than regret missed opportunities later. So we have prepared for you a list of SaaS product ideas that will be a great deal for cloud-based solutions for startups in 2021.

apart from [Websockets], which is unnecessarily complex for non-browser applications

Walmart’s app has been downloaded more than 50 million times, and that’s just the number of Android downloads. With this app, you get all the shopping features that you would usually get offline, and then some more—interested in knowing what? Keep reading.

For user-contributed data that's freeform and unstructured, use jsonb. It should perform as well as hstore, but it's more flexible and easier to work with.

The main (IMO) feature of MQTT – quality of service – doesn't make sense in our case: if a WebSocket server is down and doesn't receive broadcast messages (through HTTP/Redis/queue), it's likely not to handle client connections too.

We used testing tools that were in the same ecosystem as our backend technology stack for primrily three reasons: We owned both ends of the stack Team experience Interacting with the database

Thanks, this was just what I was looking for! This is a perfect appropriate use of instance_eval. I do not understand the nay-sayers. If you already have your array in a variable, then sure, a.reduce(:+) / a.size.to_f is pretty reasonable. But if you want to "in line" find the mean of an array literal or an array that is returned from a function/expression — without duplicating the entire expression ([0,4,8].reduce(:+) / [0,4,8].length.to_f, for example, is abhorrent) or being required to assign to a local, then instance_eval option is a beautiful, elegant, idiomatic solution!!

She signed us up, but the people that were doing all the paperwork for us basically lied to us and basically committed fraud, because they told us that through this for certain we were going to be able to get papers, because we went through some kind of a violence.

Do you want to build a successful and viable web solution? Implement the most recent trends in web development for 2021 to increase engagement and grow your business.The modern world is steadily developing, and new web technologies emerge every day. These new trends offer a lot of opportunities to entrepreneurs who want to engage more users and stay competitive in the market.In this article, we want to share the top 9 latest trends in web application development in 2021 that you should know about.

Excellent Webworld has been in the software development industry for more than a decade now, and the reason for our long term success are our dedicated services. So, get custom embedded software solutions from one of the most trusted IoT software development teams in the world.

Everyone loves the thing that interacts. SPAs or Single Page Applications are the straightforward concepts of it. When you use Facebook or Twitter, it interacts with you dynamically by bringing new data from the web server. This way, you do not need to reload the entire page to get the new data or content.

With Stack Overflow for Teams being a flexible platform, we’ve seen customers use it for a wide variety of use cases: A platform to help onboard new employees A self-serve help center to reduce support tickets Collaboration and documentation to drive innersource initiatives Breaking down silos and driving org wide transformation like cloud migration efforts A direct customer support platform Enable people who are working towards a common goal, whether a startup or a side project, to develop a collective knowledge base

What produces that text, and what do you want to use it for?

If it's a list of actual pathnames, just replacing spaces by newlines may obviously mangle pathnames that contain embedded spaces, such as /User/myself/VirtualBox VMs/.

This is a great application for using route constraints.

Application: 3-D Shape RegistrationAn important problem in model-based recognition is to find the transformation of a set of datapoints that yields the best match of these points against a shape model. The process is oftenreferred to asdata registration. The data points are typically measured on a real object by rangesensors, touch sensors, etc., and given in Cartesian coordinates. The quality of a match is oftendescribed as the total squared distance from the data pointsto the model. When multiple shapemodels are possible, the one that results in the least total distance is then recognized as the shapeof the object.Quaternions are very effective in solving the above least-squares-based registration problem.

le projet pour l’enfant n’était pas systématiquement mis en œuvre pour tout enfant36

Knowing about the wiring mechanics in Trailblazer is one thing. However, the real fun starts with nesting activities. That’s when the ideas of encapsulation, interfaces and reducing dependencies really come into play.

So, the sad conclusion is: all problems must be resolved individually depending on a specific usage context. There’s no silver bullet to resolve all ZeroDivisionErrors once and for all. And again, I am not even covering complex IO flows with retry policies and expotential timeouts.

I'm sure there will be a few other people out there who eventually want something like this, since Interactions are actually a great fit for enforcing consistency in data structures when working with a schemaless NoSQL store, but obviously it's still a bit of a niche audience.

Like all best practices, I think the way you will resolve a problem will depend of the application you are doing.

We think that, although Ruby is a great language for the backend, the view should be written in languages designed for that purpose, HTML and JavaScript.

The non-determinism is why cache invalidation — and that other hard problem, naming things — are uniquely and intractably hard problems in computer science. Computers can perfectly solve deterministic problems. But they can’t predict when to invalidate a cache because, ultimately, we, the humans who design and build computational processes, can’t agree on when a cache needs to be invalidated.

Our app is mostly about displaying pages of static information. We crunch a lot of data to generate a single error report page.

Honeybadger isn't a single page app, and it probably won't ever be. SPAs just don't make sense for our technical requirements.

This nav bar by Chris Coyier is a great example of something that makes more sense as a flexbox than grid.

Flexbox's strength is in its content-driven model. It doesn't need to know the content up-front. You can distribute items based on their content, allow boxes to wrap which is really handy for responsive design, you can even control the distribution of negative space separately to positive space.

Flexbox is for one dimensional layout (row or column). CSS grid is for two dimensional layout.

There is one situation where iframes are (almost) required: when the contents of the iframe is in a different domain, and you have to perform authentication or check cookies that are bound to that domain. It actually prevents security problems instead of creating them. For example, if you're writing a kind of plugin that can be used on any website, but the plugin has to authenticate on another domain, you could create a seamless iframe that runs and authenticates on the external domain.

I normally try to figure out if that's a good solution for the problem before resorting to iframes. Sometimes, however, an iframe just does the job better. It maintains its own browser history, helps you segregate CSS styles if that's an issue with the content you're loading in.

Usually, if you can do it without an iframe, that is a better option. I'm sure others here may have more information or more specific examples, it all comes down to the problem you are trying to solve.

Ubuntu also supports ‘snap’ packages which are more suited for third-party applications and tools which evolve at their own speed, independently of Ubuntu. If you want to install a high-profile app like Skype or a toolchain like the latest version of Golang, you probably want the snap because it will give you fresher versions and more control of the specific major versions you want to track.

CSS Grid Layout excels at dividing a page into major regions or defining the relationship in terms of size, position, and layer, between parts of a control built from HTML primitives.

Making literal grids. Like X columns with Y gap between them homegrown framework stuff. grid-gap is wonderful, as gutters are the main pain point of grid systems.

Depending on what other component libraries you’ve used, you may be used to handling events by passing callback functions to component properties, or using a special event syntax – Svelte supports both, though one is usually more appropriate than the other depending on your situation. This post explains both ways.

Les meilleures applications en ligne de 2020

A perfect web application idea must be a combination of functionalities and amazing designing elements. To make it more clear, let us first discuss what makes a difference between a great web application and an average one.

I wouldn't use Flutter for web, mobile is good though.

It's super promising for web apps, just maybe not for web pages. I went from React to Svelte to Flutter for my current app project, and every step felt like a major upgrade.Flutter provides the best developer experience bar none, and I think it also has the potential to provide the best user experience. But probably only for PWAs, which users are likely to install anyway. Or other self-contained experiences, like Facebook games. It does have some Flash vibes, but is far more suitable for proper app development than Flash ever was while still feeling more like a normal website to the average user. It won't be the right choice for everything, but I believe it will be for a lot of things.

The lodash/fp module promotes a more functional programming (FP) friendly style by exporting an instance of lodash with its methods wrapped to produce immutable auto-curried iteratee-first data-last methods.

One of the significant differences between the two is that a call to a partially applied function returns the result right away, not another function down the currying chain; this distinction can be illustrated clearly for functions whose arity is greater than two.

Currying and partial function application are often conflated.

Looks like the problem is that debounce defaults to waiting for 0 ms ... which is completely useless!

I don't think we want the cookbook to become a collection of tutorials regarding how to use certain libraries and tools with svelte. A set of more generic recipes or deep dives into topics would probably serve people better and have broader application.

It's designed for Single Page Applications (SPA). If you need Server Side Rendering then consider using Sapper.

We will also need to make a tweak to our package.json file to ensure that if we reload on a page we have navigated to, for example, /blog, we will not receive a server error and it will load the appropriate route.

Leverages hash-based routing, which is optimal for SPAs and doesn't require any server-side processing