kern_return_t kr = vm_protect(proc.task, (vm_address_t)address, numBytes, false, newProtection);
for i, item in arr { }，这一点在新收录的资料中也有详细论述
。新收录的资料对此有专业解读
for key in keys {。关于这个话题，新收录的资料提供了深入分析
From there, Michael took a less conventional path than many Silicon Valley executives by moving into government, serving from 2009 to 2011 as a White House fellow under President Barack Obama, serving as special assistant to then–Defense Secretary Robert Gates at the DOD where he managed projects in Afghanistan, Iraq, and Pakistan and oversaw efforts aimed at reducing bureaucracy to provide resources to soldiers.