[xcode] Storyboard warning: prototype table cells must have reuse identifiers

Storyboard warning: prototype table cells must have reuse identifiers

In Short~

Step1. give a name to cell

Step2. Clean “DerivedData”  ~/Library/Developer/Xcode/DerivedData/

Step3. Restart Xcode



[tip] vocal remover

SoX (Command Line)


For Mac OSX

$ sudo port install sox



Nyquist is a sound synthesis and composition language offering a Lisp syntax as well as an imperative language syntax (SAL) and a powerful integrated development environment.. Nyquist is an elegant and powerful system based on functional programming.

* audiacity_open_source



* Center pan remover


Removes center-panned content in stereo tracks by inverting and making mono.

Can be used to mitigate vocals in music tracks if the vocals are panned to centre. Optionally you can choose a band of frequencies to invert, rather than the whole channel.

This may be less destructive of the content panned away from centre.

The resulting audio retains two channels, but sounds mono because both channels are panned to centre.