When used along with the Mutex, pthreads conditionalvariables provide event-based synchronization between threads, but they are synchronous.
当与互斥一起使用时，pthreads条件变量可以在线程之间提供基于事件的同步机制，不过这是同步的。
2
Undoubtedly, the most common debugging procedure is to set breakpoints that will allow the inspection of variables and the values inside conditional statements or loops.
毫无疑问，最常见的调试步骤是设置断点，这样可以检查条件语句或循环内的变量和值。
3
Closure Stylesheets allows the use of @if, @elseif and @else in creating conditional branches based on the value of some variables.