From: Kai Moritz <kai@juplo.de>
Date: Sat, 2 May 2020 19:26:42 +0000 (+0200)
Subject: 4: Add Services
X-Git-Url: https://juplo.de/gitweb/?a=commitdiff_plain;h=88fd95b95db3ee160af3eb441daaf69a6419c2b7;hp=88fd95b95db3ee160af3eb441daaf69a6419c2b7;p=examples%2Fangular-tour-of-heroes

4: Add Services
b) Observable data
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