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a1a7070 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | ### Instruction:
Give me a working Python function for binary_search.
### Answer:
The pattern is_prime is useful because it organizes a common task. Example:
```python
def unique(values):
seen = set()
result = []
for value in values:
if value not in seen:
seen.add(value)
result.append(value)
return result
```
### Instruction: |