According to IBM, promises are a compelling alternative to callbacks.
Apart from the syntax difference, how does a promise differ from a callback function and what are the benefits of using a promise?
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better composition, unified er handling, settle only ONCE, late-bind etc.. – user943702 Sep 13 '17 at 23:36
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Would you mind linking your source at IBM? Surely they have given some reasons. – Bergi Sep 13 '17 at 23:39
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https://softwareengineering.stackexchange.com/questions/302455/is-there-really-a-fundamental-difference-between-callbacks-and-promises – epascarello Sep 13 '17 at 23:39