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/**
* Copyright (c) 2016-present, Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "caffe2/core/blob.h"
#include "caffe2/core/init.h"
#include "caffe2/core/tensor.h"
#include "caffe2/core/logging.h"
// We will be lazy and just use the whole namespace.
using namespace caffe2;
int main(int argc, char** argv) {
caffe2::GlobalInit(&argc, &argv);
caffe2::ShowLogInfoToStderr();
LOG(INFO) <<
"This script corresponds to the Blob part of the Caffe2 C++ "
"tutorial.";
LOG(INFO) << "Let's create a blob myblob.";
Blob myblob;
LOG(INFO) << "Let's set it to int and set the value to 10.";
int* myint = myblob.GetMutable<int>();
*myint = 10;
LOG(INFO)
<< "Is the blob type int? "
<< myblob.IsType<int>();
LOG(INFO)
<< "Is the blob type float? "
<< myblob.IsType<float>();
const int& myint_const = myblob.Get<int>();
LOG(INFO)
<< "The value of the int number stored in the blob is: "
<< myint_const;
LOG(INFO)
<< "Let's try to get a float pointer. This will trigger an exception.";
try {
const float& myfloat = myblob.Get<float>();
LOG(FATAL) << "This line should never happen.";
} catch (std::exception& e) {
LOG(INFO)
<< "As expected, we got an exception. Its content says: "
<< e.what();
}
LOG(INFO) <<
"However, we can change the content type (and destroy the old "
"content) by calling GetMutable. Let's change it to double.";
double* mydouble = myblob.GetMutable<double>();
*mydouble = 3.14;
LOG(INFO) << "The new content is: " << myblob.Get<double>();
LOG(INFO) <<
"If we have a pre-created object, we can use Reset() to transfer the "
"object to a blob.";
std::string* pvec = new std::string();
myblob.Reset(pvec); // no need to release pvec, myblob takes ownership.
LOG(INFO) << "Is the blob now of type string? "
<< myblob.IsType<std::string>();
LOG(INFO) << "This concludes the blob tutorial.";
return 0;
}
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