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Issue 1400473008: Roll Observatory packages and add a roll script (Closed) Base URL: git@github.com:dart-lang/observatory_pub_packages.git@master
Patch Set: Created 5 years, 2 months ago
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1 // Copyright 2014 Google Inc. All Rights Reserved. 1 // Copyright 2014 Google Inc. All Rights Reserved.
2 // 2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License. 4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at 5 // You may obtain a copy of the License at
6 // 6 //
7 // http://www.apache.org/licenses/LICENSE-2.0 7 // http://www.apache.org/licenses/LICENSE-2.0
8 // 8 //
9 // Unless required by applicable law or agreed to in writing, software 9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, 10 // distributed under the License is distributed on an "AS IS" BASIS,
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70 if (!expression) { 70 if (!expression) {
71 throw new StateError(_resolveMessage(message, 'failed precondition')); 71 throw new StateError(_resolveMessage(message, 'failed precondition'));
72 } 72 }
73 } 73 }
74 74
75 String _resolveMessage(message, String defaultMessage) { 75 String _resolveMessage(message, String defaultMessage) {
76 if (message is Function) message = message(); 76 if (message is Function) message = message();
77 if (message == null) return defaultMessage; 77 if (message == null) return defaultMessage;
78 return message.toString(); 78 return message.toString();
79 } 79 }
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