Consider this HTML:
<div style="line-height: 42px">
<input type="checkbox" />
</div>
Even though the surrounding container defines a line-height, which vertically centers its inline elements, the check box will be top aligned if it is the only element inside the container.
It will be aligned correctly if the HTML looks like this:
<div style="line-height: 42px">
<input type="checkbox" /> foo
</div>
So the ac...
If you want to use the (badly implemented!) solarized color scheme in your Rubymine IDE:
Clone the IntelliJ IDEA port:
git clone https://github.com/jkaving/intellij-colors-solarized.git
Import the settings in Rubymine by chosing the above directory File -> Import Settings
Change the color scheme in the settings (Ctrl-Alt-S) in Editor -> Colors & Fonts
Note that selecting a color scheme will also reset your previous editor font choice. You might want to change the font to [Envy Code R](http://damieng.com/blog/2008/05/2...
Solarized is a sixteen color palette (eight monotones, eight accent colors) designed for use with terminal and gui applications. It has several unique properties. I designed this colorscheme with both precise CIELAB lightness relationships and a refined set of hues based on fixed color wheel relationships. It has been tested extensively in real world use on color calibrated displays (as well as uncalibrated/intentionally miscalibrated displays) and in a variety of lighting conditions.
tl;dr: Always have your attachment path start with :rails_root/storage/#{Rails.env}#{ENV['RAILS_TEST_NUMBER']}/.
The directory where you save your Paperclip attachments should not look like this:
storage/photos/1/...
storage/photos/2/...
storage/photos/3/...
storage/attachments/1/...
storage/attachments/2/...
The problem with this is that multiple environments (at least development and test) will share the same directory structure. This will cause you pain eventually. Files will get overwritten and...
Don't simply test for the presence of the magic Paperclip attribute, it will return a paperclip Attachment object and thus always be true:
- if user.photo.present? # always true
= image_tag(user.photo.url)
Use #exists? instead:
- if user.photo.exists?
= image_tag(user.photo.url)
When your Cucumber feature needs to browse the page HTML, and you are not sure how to express your query as a clever CSS or XPath expression, there is another way: You can use all and find to grep through the DOM and then perform your search in plain Ruby.
Here is an example for this technique:
Then /^I should see an image with the file...
When you need to use diff in either some Ruby code or your Rails app, use the differ gem.
puts Differ.diff "foo", "boo"
# => {"boo" >> "foo"}
There are several variants available, all using the base method diff(to, from, separator = "\n").
You have diff_by_line, diff_by_word, diff_by_char and may of course use your own separator:
puts Differ.diff 'Hauptsatz, und mein Nebensatz.', 'Hauptsatz, und dein Nebensatz.', ','
# => Hauptsatz,{" und dein Nebensatz." >> " un...
When you have a program running in a hidden X screen (like with Xvfb for Selenium tests) you may want to look at that hidden screen occasionally.
First, find out what X displays are currently active:
netstat -nlp | grep X11
This should give you some results like these:
unix 2 [ ACC ] STREAM LISTENING 8029600 4086/Xvfb /tmp/.X11-unix/X99
unix 2 [ ACC ] STREAM LISTENING 8616 - ...
Below you can find the hex color codes for the Color Graphics Adapter palette which used to be popular in the 1980s.
$cga_black: #000000
$cga_white: #ffffff
$cga_light_gray: #aaaaaa
$cga_dark_gray: #555555
$cga_yellow: #ffff55
$cga_brown: #aa5500
$cga_light_red: #ff5555
$cga_dark_red: #aa0000
$cga_light_green: #55ff55
$cga_dark_green: #00aa00
$cga_light_cyan: #55ffff
$cga_dark_cyan: #00aaaa
$cga_light_blue: #5555ff
$cga_dark_blue: ...
VirtualBox does not offer anything for this task -- you need to do it yourself. It's not that hard:
fdisk, dd and gParted.sudo su
fdisk -l to see the disk information. \Thunderbird 5 brings a custom chrome on Windows Vista/7 that uses translucent Aero decorations on toolbars and menubars. Here is how to restore solid backgrounds if you don't like it.
Put the following into chrome\userChrome.css in your Thunderbird profile directory:
@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
window {
background-color: -moz-dialog !important;
}
(Re-)start Thunderbird afterwards.
If you need more info on where the userChrome.css is suppose...
You probably need to activate X-Sendfile.
Sass comes with many built-in functions to manipulate color. Some of the more interesting functions include:
adjust-hue($color, $degrees)
Changes the hue of a color.
lighten($color, $amount)
Makes a color lighter.
darken($color, $amount)
Makes a color darker.
saturate($color, $amount)
Makes a color more saturated.
desaturate($color, $amount)
Makes a color less saturated.
grayscale($color)
Converts a color to grayscale.
complement($color)
Returns the compleme...
geordi, our collection of awesome shell scripts, has been extended by three scripts to help you call RSpec or Cucumber:
This script runs Cucumber the way you want it:
Gemfile
bundle exec
File > New… to and follow the instructions, choose the .iso file you downloaded as image fileChoose Virtual Machine > Install VMware Tools from the VMware menu, then as root:
^
# install required packages
pkg_add...
File > New… to and follow the instructions, choose the .iso file you downloaded as image fileVirtual Machine > Install VMware Tools from the VMware menu, then:^
# install required packages
sudo apt-get install build-essential psmisc
# m...
When you want to quickly boot from a drive or image in a virtual machine you do not need to setup up a VirtualBox machine. Often QEMU does the job well enough.
Install it:
sudo apt-get install qemu
To boot an ISO:
qemu-system-x86_64 -cdrom filename.iso
If you prepared a USB pen drive and want to test it, run it like this (/dev/sdx being your device name; you may need to sudo to access it):
qemu-system-x86_64 -hda /dev/sdx
Be aware that not everything runs smoothly in QEMU -- you might need to set up a _VirtualBox...
Automatically convert bitmap images like JPEGs, GIFs and PNGs to the crisp, clean, scalable vector art of EPS, SVG, and PDF with the world's best auto-tracing software.
The trick is this: send a low-resolution version of your image to the screen, and a high-resolution version to the printer.
When installing RMagick you may get an error messages like this:
Version 2.13.1:
checking for Ruby version >= 1.8.5... yes
checking for gcc... yes
checking for Magick-config... no
Can't install RMagick 2.13.1. Can't find Magick-config in /home/arne/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/var/lib/gems/1.8/bin
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
d...
I prefer using Opera's "User mode" to toggle an outlining of HTML elements quickly. This helps greatly when you want to see the actual dimensions of elements, e.g. for floating elements inside containers, instead of opening up the Dragonfly inspector every time.
Navigate to View → Style → "Manage Modes..." and tick the checkboxes like in the attached image. Then, switch to the User Mode by pressing the shortcut (Shift+G for the 9.2-compatible layout or for the default layout with enabled "single-key shortcuts") and select "Outline" from...
Liquid Canvas is a JavaScript library which allows you to draw inside an HTML canvas element with an easy yet powerful description language.
It can be used to add graphics to your web page without ever touching an image creation tool such as The Gimp, Inkscape or Photoshop.
Check out the Demo and the basic example and then download version 0.3.
Sometimes you need to dynamically load an image and do something as soon as its loaded (when for example its size is already available).
With jQuery, this seems to work across browsers:
$('<img>')
.attr('src', '')
.load(function() {
alert('fully loaded!');
})
.attr('src', '/the/real/image/url');
The shell variable PS1 holds your bash prompt. You might want to change it to serve your needs best. Here is how to:
\[\e[ and \] so your shell can correctly count its prompt's length