left_pad_cpp

Unopinionated C++ version of the popular left_pad.

See: https://www.npmjs.com/package/left-pad

Features

• In not_kik namespace. Makes it safer from future lawsuits.
• Two functions provided, as well as object oriented interface.
• Cheaper than http://left-pad.io
• Not written in JavaScript.
• Peer reviewed.

Usage

Copying version.

std::cout << not_kik::LeftPad("foo", 5, '+') << std::endl;
std::cout << not_kik::LeftPad("foo", -1, '+') << std::endl;
// Outputs: "++foo" and "foo".

In-place version.

std::string foo("foo");
not_kik::LeftPad(5, '+', &foo);
std::cout << foo << std::endl;
foo = "foo";
not_kik::LeftPad(-1, '+', &foo);
std::cout << foo << std::endl;
// Outputs: "++foo" and "foo".

Object oriented interface.

not_kik::LeftPadder plus_left_padder('+');
std::cout << plus_left_padder.Pad("foo", 5) << std::endl;
std::cout << plus_left_padder.Pad("foo", -2) << std::endl;
// Outputs: "++foo" and "foo".

Future work

• Add RightPad.
• Python bindings.
• Better unit testing with gtest framework.
• Algorithmic optimizations.

License

In case you don't like the advertising BSD license, a commercial license is available.

In other languages

• Go: https://github.com/keltia/leftpad
• Java: https://github.com/absurdhero/left-pad-java
• Python: https://pypi.python.org/pypi/left-pad
• Service: https://github.com/keltia/leftpad