Deprecation Guide for in syntax for {{each}}

The in syntax is used to name an iterated value with {{each}}. Block params, introduced Ember 1.10, obsoletes the in syntax.

Each helpers should be updated to use block params. For example this helper:

{{#each foo in bar}}

Can be converted as follows:

{{#each bar as |foo|}}

For "itemController" :

{{#each foo in bar itemController="abc"}}

Can be converted as follows:

{{#each bar itemController="abc" as |foo|}}