Adobe no longer supports their PDF reader on Linux and the official page does not offer it for download. \ However, some files may not display properly on Ubuntu's default...
...PDF reader Evince or PDF forms may not work as expected. Hence, you may still need to use it. Here is how to install the Adobe Reader (acroread) if you...
Note that we used $ and ^ to explicitly look at the end and start of the filenames...
...git pull won't know its remote version. You could use difficult commands to set up a branch's tracking but it's easier to...
...just push it like this: git push -u From the documentation on git push: -u, --set-upstream For every branch that is up to date or successfully pushed, add upstream...
A perfect implementation of the wrong specification is worthless. By the same principle a beautifully crafted library with no documentation is also damn near worthless. If your software solves the...
...wrong problem or nobody can figure out how to use it, there's something very bad going on. Fine. So how do we solve this problem? It's easier than...
Here's a pretty useful steps that hasn't made it into Spreewald yet. It is best used with the auto-mapper for BEM classes in features/support/selectors.rb
...above [selector] element When /^I hover above (.*) element$/ do |selector| page.find(selector_for(selector)).hover end Example: When I hover above the album's image element → triggers a hover event...
change_association :parent, class_name: 'Parent::AsForm', inverse_of: :children end When saving a Parent::AsForm record with nested Child::AsForm records, the children will not be saved...
...case where you override the association with has_many :children,...
...and belongs_to :parent, .... Solution This can be fixed with appending autosave: true to the Parent model: class Parent < ApplicationRecord...
...binary, do not install Ubuntu's node package. Instead, you need to create a symlink that points to the binary one of the nodejs package: sudo ln -s /usr/bin/nodejs /usr/bin/node...
...You probably already installed NodeJS. In case you did not: sudo apt-get install nodejs If you already installed the node Ubuntu package, bower will just do nothing (i.e. not...
...disable hiding URL parameters, open up Tools → Preferences (Ctrl+F12) → Advanced → Browsing and check "Show full web address in address field". No need to touch opera:config. The badge that...
...displays the page's "zone" (Web, Secure, Opera, ...) will be shrinked so you can still see a yellow lock for proper SSL connections, etc...
In large forms (30+ controls) new Capybara version become [extremely slow] when filling out fields. It takes several seconds per input. The reason for this is that Capybara generates a...
...huge slow XPath expression to find the field. The attached code patches fill_in with a much faster implementation. It's a dirty fix and probably does a lot less...
I was annoyed that RubyMine's autocompletion did not work via Ctrl+Space for me. In fact, it did not work in any application. Turns out that keyboard combination was...
...hijacked by Ubuntu as it's the default for switching input languages (i.e. keyboard layouts). If you use only 1 language/layout, you will not notice except for the key not...
...frame('iframe-id') do fill_in 'E-mail', with: 'foo@bar.com' fill_in 'Password', with: 'secret' click_button 'Submit' end Instead of the frame's [id] attribute you may also pass...
If you're also using Cucumber you could make a meta-step like this: When /^(.*?) inside the (.*?) frame$/ do |step_text, frame_id| page.within_frame(frame_id...
S3cmd is a free command line tool and client for uploading, retrieving and managing data in Amazon S3. S3cmd reads its configuration by default from ~/.s3cfg, which is created once...
...you run s3cmd --configure. If you have many configurations, we recommend to always specify the configuration you want to use. This prevents applying actions to the wrong bucket. Examples:
You must reconfigure the guest so it will get its own IP address: Shutdown the guest In the guest's VirtualBox settings, choose Network and switch the network adapter type...
...Unix) or ipconfig (Windows) You can now connect to this IP address using HTTP, SSH, etc. Note that by doing this your VirtualBox guest is fully exposed on the local...
...not play nice with gnome-open. You can fix the problem by uninstalling it: sudo apt-get remove exo-utils Note that this may also uninstall XFCE tools like xfce4...
To reduce download time, application servers usually serve content using gzip compression, if the browser supports it. When using a tool like Wget to explicitly download an application's response...
...the server responds with the uncompressed version: wget http://example.com/ If you are curious about the compressed file's size, pass the corresponding HTTP header: wget --header="accept-encoding: gzip...
Using ActiveRecord's #signed_id and .find_signed methods you can create URLs that expire after some time. No conditionals or additional database columns required...
By default, Twitter Bootstrap's print styles include printing links. /* Bootstrap's way of printing URLs */ @media print { a[href]:after { content: " (" attr(href) ")"; } } If you want to turn that...
You can use scheme-less URLs (or protocol-relative URLs) to have browsers use the current protocol (HTTP or HTTPS) when loading content referenced with such an URL.
...relative URL doesn’t contain a protocol. For example, http://stevesouders.com/images/book-84x110.jpg becomes //stevesouders.com/images/book-84x110.jpg Browsers substitute the protocol of the page itself for the resource’s missing protocol. Problem solved...
...Invoked Function Expessions (or IIFEs) to prevent local variables from bleeding into an outside scope: (function() { var foo = "value"; // foo is scoped to this IIFE })(); In Coffeescript an IIFE looks...
(-> foo = "value" # foo is scoped to this IIFE )() There is also a shorthand syntax with do: do -> foo = "value" # foo is scoped to this IIFE
...format ("2021-02-22T20:34:53.686Z") Google API guideline: https://google.aip.dev/ Numbers: String vs. Number The JSON number type is not a double. It's just a number...
...parsed as whatever the parser finds fitting. Pagination: Limit + Offset vs. Object ID / Pointer vs. System-Version Tables Filter Attributes e.g. ?fields=f1,f2,f3 Version in path (/api/v1/) or...
Sometimes you want to see what data you get through a TCP or UDP connection. For example, you want to know how a HTTP Request look like.
...easy with netcat. Example to listen on port 80 and the output gets to stdout. sudo nc -kl 80 It's also possible write it into a file:
jQuery is still a useful and pragmatic library, but chances are increasingly that you’re not dependent on using it in your projects to accomplish basic tasks like selecting elements...
...styling them, animating them, and fetching data—things that jQuery was great at. With broad browser support of ES6 (over 96% at the time of writing), now is probably a...
When you need the DOM node of a tag (e.g. to read extra attributes, or to modify the DOM near it), you can usually reference it via document.currentScript. However, document.currentScript is unsupported in ancient browsers, like Internet Explorer 11 or wkhtmltopdf's Webkit engine. If you are not running async scripts, you can easily polyfill it: document.scripts[document.scripts.length - 1] It works because document.scripts grows with each tag that was evaluated. That is also the reason why this solution will not work reliably for async code. Demo: https://codepen.io/foobear/pen/poRLxQm
...with more than one developer should always consider to enforce code review even for small changes to improves the overall code health of the system. Here are some guidelines that...
...perfect pull request Google Google's Engineering Practices documentation Modern Code Review: A Case Study at Google Thoughtbot Thoughtbot' Code Review Guideline