Open the first Xcode workspace or project found. Put this in your .zshrc file

xc

# thanks https://gist.github.com/subdigital/5420709#comment-864932

function xc {
    xcode_proj=`find . -name "*.xc*" -d 1 | sort -r | head -1`

    if [[ `echo -n $xcode_proj | wc -m` == 0 ]]
    then
        echo "No xcworkspace/xcodeproj file found in the current directory."
    else
        echo "Found $xcode_proj"
        open "$xcode_proj"
    fi
}