CmdParser | A simple and lightweight command line parser using C11 | Parser library
kandi X-RAY | CmdParser Summary
kandi X-RAY | CmdParser Summary
A simple and lightweight command line parser using C++11.
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CmdParser Key Features
CmdParser Examples and Code Snippets
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QUESTION
I have downloaded the CmdParser library for Arduino and I ran across the following lines in the sample code:
...ANSWER
Answered 2017-Nov-20 at 22:43In the context of CmdBuffer<32>, the angle brackets are accepting template arguments for a corresponding class template. Templates are a feature of c++ that make it possible to partially define a class (or function). When appropriate arguments are given, then the template is considered to be instantiated into a class, and the class in turn can be used to instantiate an object.
In contrast to function parameters, which can be dynamically provided at runtime, template parameters must be known at compile time. I.e., you can't use a non-const int variable to instantiate CmdBuffer to various sizes once the program is already executing.
The parameters of a class template can be either types or values. For example, the class template vector can be used to hold variable sized arrays of values, but only after a datatype is provided.
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set_optional<T>(), to include an optional argument
set_required<T>(), to include a required argument
The shorthand (if the user uses a single slash) string
The longhand (if the user uses two slashes) string
The optional description.
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