gahcep/DataLoader

Simplify the process of loading input test data into your project via text files

Data Loader

Header-only C++ library written to ease a burden of loading data from text files in different formats.

Got tired of writing a code snippet that just loads data every time you need to solve a quiz? Want to put all efforts to algorithm solving without being distracted? You can this with Data Loader library.

What kind of format the library supports now?

Load vectors:

1. No size given, each value on new line:

   Data:

   1.2
   3.4
   4.0
   1.1

   Code:

   // Parse data
Loader<float> loader("input_file.txt");
loader.read_vector(Flags::NullOpts, Flags_Vector_Parse::ItemsLineByLine);

   // Get vector
std::vector<float> vect;
loader.arg_vector(0, vect);

2. Size given, delimeter-based values

   File:

   4
   1.2;3.4;4.0;1.1

   API:

   // Parse data
Loader<float> loader("input_file.txt");
loader.delimeter(';');
loader.read_vector(Flags::NullOpts, Flags_Vector_Parse::Size | Flags_Vector_Parse::ItemsAtOnce);

   // Get vector
std::vector<float> vect;
loader.arg_vector(0, vect);

Load matrix:

Note: Dimentions should be provided
Note: Only 2D matrices supported

1. Dimentions: both values on the same line

   Data:

   4 4
   1.7 2.1 2.6 1.2
   0.8 3.6 1.6 0.3
   2.6 1.8 1.4 1.6
   3.5 2.9 0.2 2.3

   Code:

   // Parse data
Loader<float> loader("input_file.txt");
loader.delimeter(' ');
loader.read_matrix(Flags_Matrix_Parse::DimentionsAtOnce);

   // Get flattened matrix
auto matrix = loader.arg_matrix();

2. Dimentions: each value on separate line:

   Data:

   4
   4
   1.7 2.1 2.6 1.2
   0.8 3.6 1.6 0.3
   2.6 1.8 1.4 1.6
   3.5 2.9 0.2 2.3

   Code:

   // Parse data
Loader<float> loader("input_file.txt");
loader.read_matrix(Flags_Matrix_Parse::DimentionsLineByLine);

   // Get flattened matrix
auto matrix = loader.arg_matrix();