def index(data, value, start=None, end=None, *, memory_pool=None):
"""
Find the index of the first occurrence of a given value.
Parameters
----------
data : Array or ChunkedArray
value : Scalar-like object
start : int, optional
end : int, optional
Returns
-------
index : the index, or -1 if not found
"""
if start is not None:
if end is not None:
data = data.slice(start, end - start)
else:
data = data.slice(start)
elif end is not None:
data = data.slice(0, end)
if not isinstance(value, pa.Scalar):
value = pa.scalar(value, type=data.type)
elif data.type != value.type:
value = pa.scalar(value.as_py(), type=data.type)
options = IndexOptions(value=value)
result = call_function('index', [data], options, memory_pool)
if start is not None and result.as_py() >= 0:
result = pa.scalar(result.as_py() + start, type=pa.int64())
return result
def index(data, value, start=None, end=None, *, memory_pool=None):
"""
Find the index of the first occurrence of a given value.
Parameters
----------
data : Array-like
value : Scalar-like object
The value to search for.
start : int, optional
end : int, optional
memory_pool : MemoryPool, optional
If not passed, will allocate memory from the default memory pool.
Returns
-------
index : int
the index, or -1 if not found
"""
if start is not None:
if end is not None:
data = data.slice(start, end - start)
else:
data = data.slice(start)
elif end is not None:
data = data.slice(0, end)
if not isinstance(value, pa.Scalar):
value = pa.scalar(value, type=data.type)
elif data.type != value.type:
value = pa.scalar(value.as_py(), type=data.type)
options = IndexOptions(value=value)
result = call_function('index', [data], options, memory_pool)
if start is not None and result.as_py() >= 0:
result = pa.scalar(result.as_py() + start, type=pa.int64())
return result