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Multiple dispatcher on arguments values.

Project description

# dispatk

## Description

This function is inspired by singledispatch of Python 3.4+ (PEP 443),
but the dispatch happens on the key extracted fro the arguments values.

```
from dispatk import dispatk

@dispatk(lambda n: int(n))
def fib(n):
return fib(n-1) + fib(n-2)
@fib.register(0)
def _(n):
return 0
@fib.register(1, 2)
def _(n):
return 1
@fib.register(41)
def _(n):
return 165580141
```

*register* accepts one or more keys, so

```
@fib.register(1, 2)
def _(n):
return 1
```

is equivalent to

```
@fib.register(1)
@fib.register(2)
def _(n):
return 1
```

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