Essential reading:
https://github.com/bbatsov/ruby-style-guide
For example, use 2 spaces per indent:
https://github.com/bbatsov/ruby-style-guide#source-code-layout
Here’s how to set it in Sublime Text:
http://mlo.io/blog/2012/08/23/language-specific-indents-sublime.html
and do auto formatting:
http://nicksantan.com/blog/2012/12/adding-auto-format-code-indenting-to-sublime-text-2/
In case you’re wondering which to use, check out this:
http://www.slideshare.net/slowbluecamera/test-presentation
bearing in mind that Capistrano version 3 was announced:
http://www.capistranorb.com/2013/06/01/release-announcement.html
Ever wanted your windows to maximise when you click the green button in the top left of your application?
Right Zoom does that job perfectly. Very nice!
margin is the space around elements (i.e. outside the border of an element).
padding is the space between the element border and the element content.
Visually, this helps:
The four numbers you may see after each of these start at the top and then go clock-wise. E.g. this:
margin:25px 50px 75px 100px;
means that the:
top margin is 25px
right margin is 50px
bottom margin is 75px
left margin is 100px
Note that the word “auto” is an instruction for the browser to calculate the margin.
The number of arguments to margin can vary from 1 to 4. Here’s what to do for the various cases:
One single value applies to all four sides.
Two values: apply first to top and bottom, the second to left and right.
Three values: apply first to top, second to left and right and third to bottom.
Four values apply to top, right, bottom and left in that order (clockwise).
More info here:
http://www.w3.org/TR/CSS2/box.html
and here:
https://developer.mozilla.org/en-US/docs/Web/CSS/margin
And this lets you actually try it out:
Need to see what’s going on with NSUserDefaults?
Use:
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSLog(@”%@”, [defaults dictionaryRepresentation]);
Or, from the command line:
(lldb) po [ [NSUserDefaults standardUserDefaults] dictionaryRepresentation];
Great post explaining the short circuit procedure that takes place with the double ampersand operator:
http://stackoverflow.com/questions/9299350/what-does-double-ampersand-do-in-this-program
After the joys of Ruby’s REPL environment, it feels a significant step backwards to go back to the Compile/Test cycle in Objective-C.
Bring on a REPL, Apple!
Until then, this is possibly the best option:
http://merbist.com/2012/05/04/macruby-on-ios-rubymotion-review/
sudo apt-get update && sudo apt-get dist-upgrade
Handy guide if you’re using Linode:
https://library.linode.com/using-linux/package-management#sph_debian-and-ubuntu-package-management
Nine times out of ten this is down to a table that hasn’t been indexed properly.
Use
SHOW PROCESSLIST;
to see your MySQL processes. Check out the ‘time’ column.
To add an index use:
ALTER TABLE `table` ADD INDEX `product_id` (`product_id`)
http://stackoverflow.com/questions/3002605/how-to-add-indexes-to-mysql-tables
and