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The DROP COLUMN form does not physically remove the column, but simply makes it invisible to SQL operations. Subsequent insert and update operations in the table will store a null value for the column. Thus, dropping a column is quick but it will not immediately reduce the on-disk size of your table, as the space occupied by the dropped column is not reclaimed. The space will be reclaimed over time as existing rows are updated. (These statements do not apply when dropping the system oid column; that is done with an immediate rewrite.)

Overall, there's a strong correlation between job satisfaction and pushing code into production. 65% of developers who never check in code are satisfied at their jobs vs. 77% satisfaction rate among developers who commit code multiple times per day. Developers want to code! (Or maybe happy developers just commit more than everyone else.)

Alexandrian pattern

Therefore we've built https://github.com/salsita/redux-side-effects which is at least "somehow" trying to simulate the Continuations with Effect handlers approach. The idea is very simple, if reducer was generator then you could simply yield side effects and return mutated app state. So the only condition is to turn all your reducers into function* and use yield* whenever you want to compose them.

In general, it is important to recognize that any big team will have multiple roles. And HTML templates are more inclusive of real-world workflow that includes designers, testers, and others who aren't deeply familiar with JavaScript, but who can interact with HTML templates directly or through tools.

generate(ast, null, code);

<script async src="//genius.codes"></script>

Let’s instead choose numbers because they fit, because they look good, and because they serve the meaning of the design.

In some ways it’s different from how we already work, but it feels more natural. Going from content out, rather than canvas in, to paraphrase Mark Boulton, is a more web native way of designing

The first parkrun took place in 2004. Paul Sinton-Hewitt, 55, an IT worker who ran for South London Harriers athletics club, decided to set up a different kind of event after tripping and falling during a run while representing his club

This is a perfect use-case for @extend. These rulesets are inherently related; their shared traits are shared for a reason, not coincidentally. Further, we aren’t transplanting their selectors hundreds of lines away from their source, so our Specificity Graph stays nice and sane

We’ve learned so far that bindings create a bigger $digest cycle, and it’d be a great idea for directives we create to potentially be statically rendered components that aren’t tied into Angular unless really needed.

ES6 performance sucks! Strong mode is a mode for ES6, you cannot use it without using various ES6 features. However, idiomatic ES6 code currently is substantially slower than ES5, across all browsers -- easily by 2x, often by 10x or more. Due to the sheer size of ES6, plus a number of unfortunate design choices, it will likely take years until implementations catch up with ES5 optimisations, and the hundreds of man years that went into those. Until then, strong mode is not going to be an attractive target

n the Webpack approach, each Sass file is compiled in isolation. This isn't a new idea, but I think it's a much better way of doing Sass. It just means you need to @import dependencies like variables & mixins wherever you use them

but also it is extremely easy to transition from browserify to webpack when needed.

If however, you’re predominantly dependent on the NPM ecosystem and you want a tool with a small and very well designed API and takes minimal configuration, you should go for Browserify

When not setting an explicit domain for a cookie, the default in most browsers is to only send the cookie when the domain matches exactly. However, Internet Explorer violates the RFC, and will send it to all subdomains as well.

Any browser extensibility is a potential vector for malicious software, and our extensions will be vetted, delivered, and managed through the Windows Store

“Search is the cornerstone of Google,” Corrado said. “Machine learning isn’t just a magic syrup that you pour onto a problem and it makes it better. It took a lot of thought and care in order to build something that we really thought was worth doing.”

API-wise, one issue with React (or JSX) is that the render function often involves a lot of logic, and ends up looking more like a piece of program (which in fact it is) rather than a visual representation of the interface. For some developers this is a bonus, but for designer/developer hybrids like me, having a template makes it much easier to think visually about the design and CSS. JSX mixed with JavaScript logic breaks that visual model I need to map the code to the design. In contrast, Vue.js pays the cost of a lightweight data-binding DSL so that we have a visually scannable template and with logic encapsulated into directives and filters.

The flip side of this is that I’m always being painfully aware that React Hot Loader is a great hack. It’s not how hot reloading should work

The greatest advantage Webpack has over these tools is Hot Module Replacement (HMR). In short, it provides a way to patch the browser state without a full refresh. We'll discuss it in more detail when we go through the React setup

match_main(text, pattern, loc) => location Given a text to search, a pattern to search for and an expected location in the text near which to find the pattern, return the location which matches closest. The function will search for the best match based on both the number of character errors between the pattern and the potential match, as well as the distance between the expected location and the potential match.

Usually you end up evolving both in parallel. However, I find it quite helpful to have an initial idea of what the state tree should look like in different situations before I start coding.

All kinds of frameworks and architectures have state. In Ember apps and Backbone apps, state is in Models. In Angular apps, state is often in Factories and Services. In most Flux implementations, it is in Stores. How does Redux differ from these?

Learn the actual underlying technologies, before learning abstractions. Don't learn jQuery, learn the DOM. Don't learn SASS, learn CSS. Don't learn HAML, learn HTML. Don't learn CoffeeScript, learn JavaScript. Don't learn Handlebars, learn JavaScript ES6 templates.

Note that this is functionally equivalent to using the HTML5 doctype.

Suddenly the cry "The Trial's beginning!" was heard in the distance, and Alice ran along with the others.

ink it so very much out of the way to hear the Rabbit say to itself, "Oh dear! Oh dear! I shall be too late!" But when the Rabbit actually took a watch out of its waistcoat-pocket and looke

And so it was indeed! She was now only ten inches high, and her face brightened up at the thought that she was now the right size for going through the little door into that lovely garden.

Now, as far as I know, this use of the UUID does not cause any major issues with the retailers, and will not lead to your EPUB being rejected. But it does not make sense to identify an EPUB with an ID that is not the ISBN. Future-proofing your content is one of the most important steps you can take as a production specialist.

Shallow rendering currently throws an error if setState is called. React seems to expect that, if you use setState, the DOM is available. To work around the issue, we use jsdom so React doesn’t throw the exception when the DOM isn’t available. Here’s how to set it up:

Composing components in a single compile-time checked file is one of the big reasons JSX is so special.

You can call store.dispatch(action) from anywhere in your app, including components and XHR callbacks, or even at scheduled intervals.

Now todoApp just gives it the slice of the state to manage, and todos knows how to update just that slice.

If you find yourself often writing such operations, it’s a good idea to use a helper like react-addons-update, updeep, or even a library like Immutable that has native support for deep updates.

EPUB CFIs are also a key part of the answer for how to share bookmarks, highlights, annotations and other reader-definable features between reading systems and between readers. By standardizing the referencing mechanism, it ensures that any reading system will be able to correctly dereference the location referenced by these CFIs, avoiding proprietary solutions to the same problem. (But, for true interop, a standard means of structuring the information for sharing is still necessary.)

Substrings in brackets are extensible assertions that improve the robustness of traversing paths and migrating them from one revision of the document to another. These assertions preserve additional information about traversed elements of the document, which makes it possible to recover intended location even after some modifications are made to the EPUB Publication

Our current integration with Hypothesis is nearly two years old now and the interface needs rethinking and updating. Sliding panels coming in from both side aren’t ideal and obscure content. The design too closely mimics a printed book and as a result the paginated rendering hinders being able to make annotations across pages. A scrolling view would allow navigating the book and using the Hypothes.is toolbar at the same time. We’re going to create a new example reader with the controls, navigation and Hypothes.is integrated together with scrolling text.

When you associate a controller with a directive, an instance of the controller gets stored in the data store of the element. The naming convention for the key value is '$' + name of directive + 'Controller'

ES6 modules are supposed to be statically analyzable (runtime cannot change the exports/imports) so it can’t be dynamic

Hierarchical composition happens only among React components, not with Stores neither with Actions.

In my experience, the best way to lift weights for runners is to use a heavy weight that is enough to push your limits after 5 repetitions

We shouldn't be expected to get things right the first time, but we need a platform that lets us get it wrong first, and then iterate towards perfection.

I highly recommend giving it a read.

Regarding tight coupling with require, this is a limitation of the framework. I believe Angular 2 is more flexible with interdirective communication from the little I have seen of it.

This effectively means that these directives cannot be used outside of annotated-image because Angular will throw an error when it cannot locate the required controller.

The basic principle is that you patch where an object is looked up, which is not necessarily the same place as where it is defined. A couple of examples will help to clarify this.

UPDATE: This post has seen a significant change from the first version of the code. It now relies on a much simpler method: a hidden object element that relays its resize event to your listeners.

multiElement

A relative reference beginning with a single slash character is termed an absolute-path reference, as defined by <abs_path> in Section 3.

House - Judiciary

It is important to note that the path attribute does not protect against unauthorized reading of the cookie from a different path. It can be easily bypassed using the DOM, for example by creating a hidden iframe element with the path of the cookie, then accessing this iframe's contentDocument.cookie property. The only way to protect the cookie is by using a different domain or subdomain, due to the same origin policy.

This will make the directory /data inside the container live outside the Union File System and directly accessible on the host. Any files that the image held inside the /data directory will be copied into the volume. We can find out where the volume lives on the host by using the docker inspect command on the host (open a new terminal and leave the previous container running if you’re following along):

and a related URL fragment specification will leverage the FindText API to let you share a URL that navigates directly to the selection you shared

Here’s an example with a component directive that uses bindToController. Instead of defining the scope properties on scope, we declaratively define what properties are bound to the component’s controller:

The DOM element that is currently being annotated.

Recruiters are not welcome.

This extension passes the AMO validator with no signing warnings, meaning it would be automatically signed for distribution. #1 required no modifications to pass validation. #2 and #3 required some l33t hacking in the form of Components.interfaces["nsI" + "p".toUpperCase() + "rocess"] and window['e'.replace() + 'val'](req.responseText) — variations on basic string concatentation.

This is pretty bad since it looks like you support accessors but you really do not. I hope you are not shipping anything with this any time soon.

Won't this be fixed now under Bug 49739?

Trying to override the getter on the prototype of an element is somewhat pointless as WebKit does not use getters for DOM properties. Technically we could make it do so, but that basically means throwing away performance for no good reason. Comment 2 T. Brains 2010-03-21 14:23:58 PDT That means there's absolutely no way to override or extend the default get or set behavior of any of the built-in DOM properties, which is very limiting, and like I mentioned contradicts the behavior of other browsers.

In those cases, the best way to get an invariant is to start writing what Steve McConnell calls“smoke tests” against the rest of the system

The free plan of ngrok allows only a single concurrent tunnel to be opened. Even though BroswerStack and Sauce Labs provide their own tunneling solution, we decided to go with ngrok, in order to provide a more generic solution. We happily upgraded to the $25/month business account following our excellent experience with the free account.

Join Darin Fisher, VP of Chrome as he talks the past, present and future of the web.

Given we put the system in a known state before the user (or external system) starts interacting with the system (in the When steps). Avoid talking about user interaction in givens. When we take key actions the user (or external system) performs. This is the interaction with your system which should (or perhaps should not) cause some state to change. Then we observe outcomes.

This problem is precisely the kind of problem that FSMs are very good at resolving. If you can enumerate the states, and events, then you know the number of paths though the system. So if Given/When/Then statements are truly nothing more than state transitios, all we need to do is enumerate the number of GIVENs and the number of WHENs. The number of scenarios will simply be the product of the two.

Compute fingerprint

Adding in push notifications with Parse made a big improvement in re-engagement and keeping people coming back at the right time.

Most apps had detailed stats to help improve performance. However, to a friend who is not a runner, that info is much less exciting. They would probably much rather see that it was equal to 5 donuts, and give you a thumbs up.

When starting on a new design, I like to list the objectives. Picking the right goals is often more important and harder than making things look good

On October 14, 2003, the Swiss newspaper Tages-Anzeiger published a few articles presenting as a scandal the fact that the Degussa company was involved in the construction of the memorial producing the anti-graffiti substance Protectosil used to cover the stelae, because the company had been involved in various ways in the National-Socialist persecution of the Jews. A subsidiary company of Degussa, Degesch, had even produced the Zyklon B gas used to poison people in the gas chambers.

The onboarding flow can be designed in many other ways that might be more useful to your users. Slack, for instance, uses the first screen to create some context. They simply introduce themselves, focusing on benefits instead of screens and features.

That’s why now all the big players are shifting from hamburger menus towards making the most relevant navigation options always visible.

use Hypothesis

You’ll now have three Docker containers