Category Archives: OSX

Fish Shell

Installing Fish:

[cc lang=”bash”]
brew install fish
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Displaying the branch name in the prompt:

Place the following script here: ~/.config/fish/config.fish

[cc lang=”bash”]
set fish_git_dirty_color red
set fish_git_not_dirty_color green

function parse_git_branch
set -l branch (git branch 2> /dev/null | grep -e ‘\* ‘ | sed ‘s/^..\(.*\)/\1/’)
set -l git_diff (git diff)

if test -n “$git_diff”
echo (set_color $fish_git_dirty_color)$branch(set_color normal)
else
echo (set_color $fish_git_not_dirty_color)$branch(set_color normal)
end
end

function fish_prompt
if test -d .git
printf ‘%s@%s %s%s%s:%s> ‘ (whoami) (hostname|cut -d . -f 1) (set_color $fish_color_cwd) (prompt_pwd) (set_color normal) (parse_git_branch)
else
printf ‘%s@%s %s%s%s> ‘ (whoami) (hostname|cut -d . -f 1) (set_color $fish_color_cwd) (prompt_pwd) (set_color normal)
end
end
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Reference here (Thanks for sharing the snippet!)

Fixing: StatusBar covering your UIViewController’s view

Ever since iOS 7, if you’re not using a UINavigationController instance, you’ll need to perform a very simple step, in order to prevent iOS’s StatusBar from covering your view:

1. Press Control, click over the “Top Layout Guide”, and drag it upon the troublesome view.
2. You’ll get a small popup. Please, click on “Vertical Spacing”.
3. Edit the new constraint, and update the Constant value, as needed.

Reference here!

CoreData HeavyWeight Migration Issues

We recently hit a pretty severe bug. In one of our apps, users began experiencing token issues after an upgrade.

Bottomline?… the last upgrade had a Heavyweight migration. So far so good, but what happened?. Turns out that the URIRepresentation that can be used to map a NSManagedObjectID, is and is not reliable. Everything is okay, until you perform a heavyweight migration!.

Heavyweight migrations might swizzle your NSManagedObjectID’s. Fix?, create your own primaryKeys. NSUUID helper class is the easiest way to accomplish that.

Reference here!