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To make image and sound resources available in Interface Builder 3.0 and later, all you have to do is add them to your Xcode project. Interface Builder automatically searches your Xcode project for resources and lists them in the library window. When you make a connection to a given resource file, Interface Builder makes a note of that connection in the nib file. At load time, the nib-loading code looks for that resource in the project bundle, where it should have been placed by Xcode at build time.

Public key cryptography uses a public key to encrypt data
and a private key to decrypt it. The name public key
comes from the fact that you can make the encryption key public without
compromising the secrecy of the data or the decryption key.

What this means is that it is safe to send your public
key (i.e. the contents of the ~/.ssh/id_rsa.pub
file) in electronic mail or by other means e.g. to have a system
administrator of a remote site install that key into your
~/.ssh/authorized_keys file. For anyone to actually
gain access they need the corresponding private key (i.e.
the decrypted contents of ~/.ssh/id_rsa) to identify
themselves.

To further protect your private key you should enter a
passphrase to encrypt the key when it is stored in the filesystem. This
will prevent people from using it even if they gain access to your
files.

• Play sounds of any duration

• Play sounds from files or memory buffers

• Loop sounds

• Play multiple sounds simultaneously (although not with precise synchronization)

• Control relative playback level for each sound you are playing

• Seek to a particular point in a sound file, which supports application features such as fast forward and rewind

• Obtain audio power data that you can use for audio level meterin

• Play sounds of any duration

• Play sounds from files or memory buffers

• Loop sounds

• Play multiple sounds simultaneously (although not with precise synchronization)

• Control relative playback level for each sound you are playing

• Seek to a particular point in a sound file, which supports application features such as fast forward and rewind

• Obtain audio power data that you can use for audio level metering

OneRiot则有一种神奇的算法可以收录tweets，tweets中的链接，以及链接页面的内容，进而提供相关结果。Wowd开发了一种类似于SETI@Home的分布式计算模型，可有效管理和解析用户的即时信息数据集。