本文整理汇总了C++中vector::At方法的典型用法代码示例。如果您正苦于以下问题：C++ vector::At方法的具体用法？C++ vector::At怎么用？C++ vector::At使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类vector的用法示例。
在下文中一共展示了vector::At方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main(int argc, const char *argv[]) {
OptArgs opts;
string position_file;
string h5file_in;
string source;
string h5file_out;
string destination;
string positions_file;
bool help;
string flowlimit_arg;
unsigned int flowlimit;
vector<string>otherArgs;
DumpStartingStateOfExtractWells (argc,argv);
opts.ParseCmdLine(argc, argv);
opts.GetOption(h5file_in, "", 'i', "input");
opts.GetOption(source, "", 's', "source");
opts.GetOption(h5file_out, "", 'o', "output");
opts.GetOption(destination, "", 'd', "destination");
opts.GetOption(flowlimit_arg, "", 'f', "flowlimit");
opts.GetOption(positions_file, "", 'p', "positions");
opts.GetOption(help, "false", 'h', "help");
opts.GetLeftoverArguments(otherArgs);
// input data processing
string line;
vector<size_t> row_val;
vector<size_t> col_val;
ifstream filestream;
if ( ! positions_file.empty() )
filestream.open(&positions_file.At(0));
istream &input = ( filestream.is_open() ) ? filestream : cin;
while ( getline(input, line) )
{
int num = -1;
vector<size_t> ints;
istringstream ss(line);
while ( ss >> num && ints.size() < 2 ) {
if (num < 0) {
fprintf(stderr, "Found negative integer %d\n", num);
exit(-1);
}
else
ints.push_back((size_t)num);
}
if (ints.size() != 2) {
fprintf(stderr, "Found %d integers in %s, expected 2\n", (int)ints.size(), &line[0]);
continue;
}
row_val.push_back(ints.at(0));
col_val.push_back(ints.at(1));
}
if (row_val.size() == 0 ) {
fprintf(stdout, "No positions to extract, check input\n");
exit(0);
}
vector<size_t>input_positions(row_val.size(), 0);
int numCPU = (int)sysconf( _SC_NPROCESSORS_ONLN );
int numThreads = MAXTHREADS < numCPU ? MAXTHREADS : numCPU;
fprintf(stdout, "Using %d threads of %d cores\n", numThreads, numCPU);
if (source.empty())
source = source + SIGNAL_IN;
H5ReplayReader reader = H5ReplayReader(h5file_in, &source[0]);
if ( h5file_out.empty() )
h5file_out = h5file_out + H5FILE_OUT;
if ( destination.empty() )
destination = destination + SIGNAL_OUT;
reader.Open();
int rank = reader.GetRank();
vector<hsize_t>dims(rank);
vector<hsize_t>chunks(rank);
reader.GetDims(dims);
reader.GetChunkSize(chunks);
reader.Close();
// convert input row, col positions to indices
for (hsize_t i=0; i<input_positions.size(); i++)
input_positions.At(i) = RowColToIndex(row_val.At(i), col_val.At(i), dims.At(0), dims.At(1));
sort(input_positions.begin(), input_positions.end());
fprintf(stdout, "Opened for read %s:%s with rank %d, row x col x flow dims=[ ", &h5file_in[0], &source[0], rank);
for (int i=0; i<rank; i++)
fprintf(stdout, "%d ", (int)dims.At(i));
fprintf(stdout, "], chunksize=[ ");
for (int i=0; i<rank; i++)
fprintf(stdout, "%d ", (int)chunks.At(i));
fprintf(stdout, "]\n");
H5ReplayRecorder recorder = H5ReplayRecorder(h5file_out, &destination[0],reader.GetType(),2);
recorder.CreateFile();
//.........这里部分代码省略.........