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@ngdoc error
@name ngRepeat:iidexp
@fullName Invalid Identifier
@description
Occurs when there is an error in the identifier part of {@link api/ng.directive:ngRepeat ngRepeat}'s expression.
To resolve, use either a valid identifier or a tuple (_key_, _value_) where both _key_ and _value_ are valid identifiers.
Examples of *invalid* syntax:
```
<div ng-repeat="33 in users"></div>
<div ng-repeat="someFn() in users"></div>
<div ng-repeat="some user in users"></div>
```
Examples of *valid* syntax:
```
<div ng-repeat="user in users"></div>
<div ng-repeat="(id, user) in userMap"></div>
```
Please consult the api documentation of {@link api/ng.directive:ngRepeat ngRepeat} to learn more about valid syntax.
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