Just a quick note that Virtus can coerce (auto-cast) structured values like collections or maps: class Klass include Virtus.model attribute :dimensions, Hash[Symbol => Float] attribute :numbers, Array[Integer]
I have no idea how it's supposed to work (or why the don't have a print CSS), but this works for pages written with Markdown: "Edit" the wiki...
In addition to the {{ myValue }} two-way binding syntax, since Angular 1.3 there's a one-time binding syntax, prefixing the value or expression with ::, e.g. {{ ::myValue }}, {{ ::myValue >= 42 }} and...
...myExpression(value) | someFilter }}. One-time bound expressions get dropped from the list of watchers as soon as they can be resolved. Performance-wise the impact for this small change is...
...it can wipe the database. Importing a remote dump with geordi Asking Postgres to show the storage path of a database Doing these things without a superuser will show a...
...raise PG::InsufficientPrivilege. To do so, the application's PostgreSQL user must be a superuser. Grant superuser rights like this: $ sudo -u postgres psql # ALTER USER WITH SUPERUSER...
...Transcoder is video transcoding in the cloud. It is designed to be a highly scalable, easy to use and a cost effective way for developers and businesses to convert (or...
...transcode”) video files from their source format into versions that will playback on devices like smartphones, tablets and PCs. This might be a good alternative for services like Panda which...
sudo apt-get install i8kutils Reboot You can now run the i8k tools such as i8kmon Setting the fan speed to high (2) will only work shortly as the fan...
...is somehow controlled automatically.\ This helps you out in bash: while true; do i8kfan - 2; sleep 0.2; done There should be a better solution and it will be posted as...
If you paste multiple lines of text into a cell, Calc's AutoCorrect will change the first character of the...
...you want to inspect a method's magic), you need to enable it explicitly: script/console --debugger If you cannot access local variables etc, see this card. WEBrick For WEBrick, enable...
script/server --debugger
...to it if the content inside is too long. While you can only truncate single lines with CSS by using text-overflow, this small JavaScript library also allows truncating text...
...For Internet Explorer, the element you clamp on needs to have its line-height set in pixels. A relative value will not work. There is also the -webkit-line-clamp...
Scope is all about where something is visible. It’s all about what (variables, constants, methods) is available to you at a given moment. If you understand scope well enough...
...more importantly, which ones are not. The article gives detailed explanation on the variable scope in ruby with examples that are easy to understand. Every ruby developer should at least...
If you're getting this strange error message when setting debugging breakpoints, probably HAML is the culprit. Cause As far as I could find out, the error is the result...
...of setting a breakpoint (debugger) in a helper method that's called from a haml partial. Suggestions Try putting the breakpoint into the HAML view...
...or quote from an article is duplicated within the article using a different formatting style so that it jumps out at the reader. Blatantly copying the excerpt of the pull...
A pull quote is a purely visual technique, and therefore should not change the structure of the body. Next to that, a structural representation of the excerpt would be seen...
There is a kinda secret, yet well supported CSS feature called currentColor. It's like a special CSS variable that has been supported in almost all browsers for almost all...
...time (see linked Caniuse). Usage The currentColor value can be used in CSS to indicate the current value of color should be used. A common use case is setting a...
If your shell seems frozen You probably pressed Ctrl-S which stops the buffer. Try Ctrl-Q to resume. If your shell behaves strangely (no input being displayed, strange character...
...Try typing this, followed by pressing the return key: reset That should clear the screen and reset output settings etc...
Styling HTML email is painful. Tables, inline CSS, unsupported CSS, desktop clients, web clients, mobile clients, various devices, various providers. All these things have to be thought about and tested...
...It’s no surprise developers don’t want to deal with this when there is a backlog of more important priorities. We’ve tried to remove some of the pain...
...so ETags are only saving you render time and some bandwidth. While working on a Sinatra-based JSON web service that gets very heavy traffic, I wanted to find a...
...way to short-circuit requests and avoid most of the stack if a resource hasn’t been modified...
Katapult was an endeavor to dramatically speed up starting a new Rails application. However, it turned out to save less time than expected, while requiring more time for maintenance than...
...anticipated. Since its benefits fell too low, we have decided to not continue developing Katapult. You can still use Katapult for generating ready-to-run applications with model CRUD, authentication...
While you can set your own font in your terminal or other tools, it will not change the default "Monospace" font that some applications use. To change that, edit ~/.fonts.conf...
...and add settings for the "monospace" family. Here is how it looks on my machine now: monospace DejaVu Sans Mono Fill in "DejaVu Sans Mono" with your preferred font's...
Get "PuTTY Link" and "Pageant" (an SSH key agent) from the PuTTY download page. Run pageant.exe, find its icon inside your system tray and add your SSH key.
...a cmd and put the full path to PuTTY's plink.exe into the GIT_SSH environment variable, e.g.: set GIT_SSH=D:\PuTTY\plink.exe You can then use Git like...
...the parsing to ruby_parser. Unfortunately, ruby_parser appears to be confused when a string contains both escaped chars (that is, any unicode characters as ndash, umlauts etc.) and #{} blocks...
...which makes it extremely slow. The easiest "solution" we came up with was to replace all occurrences of UTF-8 chars with their HTML entities (so "ü" instead of "ü...
If you need to call a state_machine event and do not want to re-define resource_controller's create method, try this: create.before do object.state_event = :launch_spaceship
This only works when you actually have a session ID (not the case for Rails' CookieStore, for example): request.session_options[:id] # => "142b17ab075e71f2a2e2543c6ae34b94" Note that it's a bad idea to...
...expose your session ID, so be careful what you use this for...
If you want to do JavaScript-style camelization, ActiveSupport's String#camelize method can actually help you out. Simply pass a :lower argument to it. >> 'foo_bar_baz'.camelize
You select some characters, make them bold and suddenly your entire document is bold? Here's how to fix that: Right-click the style in the "Styles and Formatting" window...
...Select "Modify" Go to the "Organizer" tab Unselect "AutoUpdate" You're welcome...