我需要再次构建，但这次是在一台拥有主线代码的集成机器上进行。
At this point we build again, but this time on an integration machine based on the mainline code.
它只不过就是调用函数或者子例程的主线代码的概念，其中每个函数或者子例程实现了更大的程序的一个单独的部分。
It? S simply the concept of mainline code that calls out to functions or subroutines that each implement an individual piece of a larger program.
这阻塞了主线程但是在另一个线程上执行代码。
This blocks the main thread but executes the code on another thread.
例：新的代码检入到主线中。
MacRuby 0.6发布之后，用户发现了一个问题，在运行某代码段的时候，从后台线程切换到主线程会导致程序崩溃。
One issue that was found after the release of MacRuby 0.6 seems to cause problems with scheduling a block to run on the main thread from a background thread.
只要团队A的开发代码线达到稳定的一个点，他们就可以将代码复制回主线。
As soon as Team a development branch reaches a stable point they copy back up to the mainline.
上面的代码，将在某个线程创建时抛出任何异常在主线程中。
This code will assure that any exception which occurred during thread creation will be raised in your main thread.
你需要做一些线程安全工作，确保UI修改代码被发送到主线程。
You need to do some thread safety work and make sure that UI modifying code gets sent to the main thread.
你的代码可能设置一个标志或内部同步对象（如事件）使主线程的代码最终会注意到它，并继续从那里筹集外部事件。
You code might set a flag or an internal synchronization object (such as event) so that main thread code would eventually notice it and proceed with raising an external event from there.
不过，可以创建辅助线程，以便与主线程一起并行执行代码。
However, auxiliary threads can be created and used to execute code in parallel with the primary thread.
我通过代码管理系统在代码库的主线(mainline)上拉下(checkout)一份工作代码拷贝。
I do this by using a source code management system by checking out a working copy from the mainline.
我通过代码管理系统在代码库的主线(mainline)上拉下(checkout)一份工作代码拷贝。
I do this by using a source code management system by checking out a working copy from the mainline.
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