roy | Small functional language that compiles to JavaScript | Functional Programming library

HTTP cookies violate the REST architectural style because they are independent of application state and they have no semantics, according to Roy Fielding’s doctoral dissertation Architectural Styles and the Design of Network-Based Software Architectures, § 6.3.4.2 ‘Cookies’:

An example of where an inappropriate extension has been made to the protocol to support features that contradict the desired properties of the generic interface is the introduction of site-wide state information in the form of HTTP cookies. Cookie interaction fails to match REST's model of application state, often resulting in confusion for the typical browser application.

Cookies also violate REST because they allow data to be passed without sufficiently identifying its semantics, thus becoming a concern for both security and privacy. The combination of cookies with the Referer [sic] header field makes it possible to track a user as they browse between sites.

So he suggests the following alternative:

As a result, cookie-based applications on the Web will never be reliable. The same functionality should have been accomplished via anonymous authentication and true client-side state. A state mechanism that involves preferences can be more efficiently implemented using judicious use of context-setting URI rather than cookies, where judicious means one URI per state rather than an unbounded number of URI due to the embedding of a user-id. Likewise, the use of cookies to identify a user-specific "shopping basket" within a server-side database could be more efficiently implemented by defining the semantics of shopping items within the hypermedia data formats, allowing the user agent to select and store those items within their own client-side shopping basket, complete with a URI to be used for check-out when the client is ready to purchase.

My understanding of his user preference example is the following. Let’s say that a website allows its users to choose between a light theme (the default) and a dark theme in a preference page at URI /preferences (like Stack Overflow). When a user chooses the dark theme, he should be redirected to the URI /preferences?theme=dark whose HTML representation will be the same as the HTML representation of the URI /preferences, except that it will be now in dark mode and the query ?theme=dark will be appended to all the embedded hyperlinks. That way, if the user selects for instance the embedded hyperlink to the home page at URI /home?theme=dark (not /home), then the HTML representation of the home page will also be in dark mode and the query ?theme=dark will also be appended to all its embedded hyperlinks. To revert to the light theme, then the user selects the embedded hyperlink to the preference page at URI /preferences?theme=dark, chooses the light theme in the preference page and should be redirected to the URI /preferences whose HTML representation will be the same as the HTML representation of the URI /preferences?theme=dark, except that it will be now in light mode and the query ?theme=dark will be removed from all the embedded hyperlinks. Is it what Roy Fielding meant?

Likewise for his shopping cart example, when the user adds a product i to cart, he should be redirected to a URI with a query ?product-{i}={product-i}&quantity-{i}={quantity-i} whose HTML representation will have that query appended to all its embedded hyperlinks. That way, when the user selects the check out hyperlink /checkout?product-1={product-1}&quantity-1={quantity-1}&…&product-n={product-n}&quantity-n={quantity-n}, the content of the shopping cart is sent to the website. Is it what Roy Fielding meant?

I have combined 3 JSON files into a single array using flat(), and then looped through the array to output its contents in the console. It outputs an array of arrays created from the 3 JSON files below.

Here's the console output:

I'm now writing my engineering thesis about REST and REST APIs, mostly focusing on Django REST framework as it was the framework we used in our engineering project. I just finished writing about the guidelines for API to be RESTful stated by Roy Fielding and I wanted to start section with implementations of REST architecture in Django REST Framework, but then I realized I don't really know why this framework is RESTful. I know what main paradigms are for API to be RESTful, but I don't know what specific parts of framwork inplements for example that our service is stateless or layered. Maybe someone can pinpoint what parts of django rest framework corresponds to specified guidelines for service to be RESTful ? If It's wrong site to ask this type of question then I'm sorry, but any help would be greatly appreciated.

I wanna drag files to my window and then perform actions.

I tried to use snippets below provided in this answer to distinguish whether you're dragging a file or a window.

I have a HTML table and with question and 8 SELECT ROW OR SELECT from user that requires user to select data and as the user selects on the selection it should save so when the the user refresh/reloads or closes the web-page and opens the web-page back up the data must show on what he selected previously.

I tried the simple method using local storage to get data selected by user to save and display for the first select_row but doesn't work because it get into conflict when i try to get and save the data from same place. so just to see what i did on my work i made the line of code to show under scripts if when the user selects

I have Created a Node JS API for Search and stored some data in MongoDB. My data is stored like example:

I'm using Win10 and have some code written in Python 2.7 (have to be, it's not mine) and I want to create an EXE file. I want to install pyinstaller but can't do it. I've already tried to update the pip version, the suteuptools, to install "ez_setup" to download the file from the pyinstaller website but it doesn't help.

These are the ways I tried to download it:

I have two folders: Controls and Patients. Inside each one of these there are several folders for different individuals (CO1, CO2), with this organization:

I have two folders: control and patients both with several folders inside, belonging to one individual each.

I want to do two things:

• Create inside the folder for each individual a new folder called cortical_maks and inside that one, three more, called accumebens, putamen, caudate

• Inside each individual folder, there are images in img format I want to convert to nii.gz using the funtion fslchfiletype.

This is what I have so far: