availableData
The data currently available in the receiver.
レシーバにおいて現在利用可能なデータ。
- readDataUpToLength:error:
Reads data synchronously up to the specified number of bytes.
Availability 有効性
Technology
error
When the return value is nil
, this provides an NSError
indicating why the read operation failed.
The data available through the file handle up to the maximum size that can be represented by an NSData
object or, if a communications channel, until an end-of-file indicator is returned.
This method invokes read
as part of its implementation.
このメソッドは、read
をそれの実装の一部として発動します。
availableData
- readDataUpToLength:error: