Update README.md

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Pranav Srinivas Kumar 2019-03-31 17:33:39 -04:00 committed by GitHub
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@ -81,9 +81,6 @@ Here's what's happening:
Compound arguments are optional arguments that are combined and provided as a single argument. Example: ```ps -aux```
* Here are three optional arguments ```-a```, ```-b``` and ```-c```.
* ```-c``` requires 2 floating point numbers from the command-line. ```-a``` and ```-b``` are toggle arguments.
```cpp
argparse::ArgumentParser program("test");
@ -106,6 +103,15 @@ auto b = program.get<bool>("-b"); // true
auto c = program.get<std::vector<float>>("-c"); // {3.14f, 2.718f}
```
Here's what's happening:
* We have three optional arguments ```-a```, ```-b``` and ```-c```.
* ```-a``` and ```-b``` are toggle arguments.
* ```-c``` requires 2 floating point numbers from the command-line. You can specify how many inputs to expect using ```nargs```.
* argparse can handle compound arguments ```-abc``` and ```-bac```. This only works with short single-character argument names.
- ```-a``` and ```-b``` become true.
- argv is further parsed to identify the inputs mapped to ```-c```.
* Using ```-cab``` will throw an error since argparse expects two inputs for the argument ```-c```.
## Examples
### Positional Arguments