| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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| // for details. All rights reserved. Use of this source code is governed by a
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| // BSD-style license that can be found in the LICENSE file.
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| /// @assertion It is a compile-time error if the arity of a user-declared
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| /// operator with one of the names:
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| /// <, >, <=, >=, ==, -, +, ̃/, /, *, %, |, ˆ, &, <<, >>, >>>, [] is not 1.
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| /// @description Checks that a compile-time error is produced if a user-defined
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| /// operator [] specifies no parameters.
|