<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Hi Greg.</div><div class=""><br class=""></div><div class="">Thanks for the insight. In this case, I think I’m saved because I don’t actually need to capture self in the block. I guess I was just too far along on my train to realize that. I think this will work and it will keep the code simple and neat.</div><div class=""><br class=""></div><div class="">I guess we'll see as I complete this project whether I really have everything I need for the callback block. I may have to resort to one of the other measures you all have suggested.</div><div class=""><br class=""></div><div class="">Thanks again!</div><div class=""><br class=""></div><div class="">-Kenny</div><div class=""><br class=""></div><br class=""><div><blockquote type="cite" class=""><div class="">On Sep 26, 2017, at 12:40 AM, Greg Parker <<a href="mailto:gparker@apple.com" class="">gparker@apple.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;"><div class=""><br class="Apple-interchange-newline">On Sep 25, 2017, at 6:12 PM, Kenny Leung via swift-users <<a href="mailto:swift-users@swift.org" class="">swift-users@swift.org</a>> wrote:</div><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class=""><br class=""></div><div class="">I’m trying to implement the AudioQueue example from Apple in Swift, and keep it as Swifty as I can. I’ve run into a problem where I have a let ivar for the AudioQueue, but the only way to initialize that let ivar is to pass a block to the function that creates the AudioQueue. I get the error, "Variable 'self.mQueue' used before being initialized”. Is there any way to get around this catch? </div></div></div></blockquote><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">The compiler cannot guarantee that the code running inside your block does not try to use mQueue before it is initialized. Swift strictly enforces its initialization rules, so the compiler rejects your code.</div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">One common solution is to change mQueue into an implicitly-unwrapped optional var. The compiler still can't tell if your block object uses mQueue before it is initialized, but if it does it will get a well-defined runtime error due to the nil IUO. That well-defined error is sufficient to pacify the initialization rules.</div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Another solution might be to divide your data into two different types. It looks like the block object only needs to access self.audioBuffers and self.source. You might be able to box those two fields into a separate class type and have the block object capture a reference to that object only. Then the initialization order is simple enough for the compiler to understand:</div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">1. PDAudioPlayer.init() initializes a source+audioBuffers object.</div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">2. PDAudioPlayer.init() calls AudioQueueNewOutputWithDispatchQueue(), passing it a block that captures a reference to the fully-initialized source+audioBuffers object.</div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">3. PDAudioPlayer.init() uses the results of #1 and #2 to complete its own initialization or return nil.</div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">This adds an extra allocation and extra indirection to each PDAudioPlayer object, but as long as you don't have millions of these things the performance difference should be negligible.</div><div style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><br class="" style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><blockquote type="cite" class="" style="font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;"><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class="">———8<————8<————</div><div class=""><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"><span class="" style="color: rgb(186, 45, 162);">class</span><span class="Apple-converted-space"> </span>PDAudioPlayer {</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">static</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">let</span><span class="Apple-converted-space"> </span>kNumberBuffers :<span class="" style="color: rgb(112, 61, 170);">Int</span><span class="Apple-converted-space"> </span>=<span class="Apple-converted-space"> </span><span class="" style="color: rgb(39, 42, 216);">3</span> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(0, 132, 0);">// 1</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0); background-color: rgb(255, 255, 255);"><span class=""> <span class="Apple-converted-space"> </span></span>//var mDataFormat:AudioStreamBasicDescription // 2</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">let</span><span class="Apple-converted-space"> </span>mQueue :<span class="" style="color: rgb(112, 61, 170);">AudioQueueRef</span> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(0, 132, 0);">// 3</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0); background-color: rgb(255, 255, 255);"><span class=""> <span class="Apple-converted-space"> </span></span>//var mBuffers :[AudioQueueBufferRef] // 4</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0); background-color: rgb(255, 255, 255);"><span class=""> <span class="Apple-converted-space"> </span></span>//var mAudioFile :AudioFileID? // 5</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">var</span><span class="Apple-converted-space"> </span>bufferByteSize :<span class="" style="color: rgb(112, 61, 170);">UInt32</span>? <span class="Apple-converted-space"> </span><span class="" style="color: rgb(0, 132, 0);">// 6</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">var</span><span class="Apple-converted-space"> </span>mCurrentPacket :<span class="" style="color: rgb(112, 61, 170);">Int64</span>? <span class="Apple-converted-space"> </span><span class="" style="color: rgb(0, 132, 0);">// 7</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">var</span><span class="Apple-converted-space"> </span>mNumPacketsToRead :<span class="" style="color: rgb(112, 61, 170);">UInt32</span>? <span class="Apple-converted-space"> </span><span class="" style="color: rgb(0, 132, 0);">// 8</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(112, 61, 170); background-color: rgb(255, 255, 255);"><span class=""> <span class="Apple-converted-space"> </span></span><span class="" style="color: rgb(186, 45, 162);">var</span><span class=""><span class="Apple-converted-space"> </span>mPacketDescs :</span>UnsafePointer<span class=""><</span>AudioStreamPacketDescription<span class="">>? <span class="Apple-converted-space"> </span></span><span class="" style="color: rgb(0, 132, 0);">// 9</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">var</span><span class="Apple-converted-space"> </span>mIsRunning:<span class="Apple-converted-space"> </span><span class="" style="color: rgb(112, 61, 170);">Bool</span><span class="Apple-converted-space"> </span>=<span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">false</span> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(0, 132, 0);">// 10</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255); min-height: 13px;"> <br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">let</span><span class="Apple-converted-space"> </span>dispatchQueue :<span class="" style="color: rgb(112, 61, 170);">DispatchQueue</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135); background-color: rgb(255, 255, 255);"><span class=""> <span class="Apple-converted-space"> </span></span><span class="" style="color: rgb(186, 45, 162);">let</span><span class=""><span class="Apple-converted-space"> </span>source :</span>PDFileAudioSource</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">var</span><span class="Apple-converted-space"> </span>audioBuffers :[<span class="" style="color: rgb(79, 129, 135);">PDAudioBuffer</span>]</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255); min-height: 13px;"> <br class="webkit-block-placeholder"></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135); background-color: rgb(255, 255, 255);"><span class=""> <span class="Apple-converted-space"> </span></span><span class="" style="color: rgb(186, 45, 162);">init</span><span class="">?(source:</span>PDFileAudioSource<span class="">) {</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">self</span>.<span class="" style="color: rgb(79, 129, 135);">source</span><span class="Apple-converted-space"> </span>= source</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">self</span>.<span class="" style="color: rgb(79, 129, 135);">dispatchQueue</span><span class="Apple-converted-space"> </span>=<span class="Apple-converted-space"> </span><span class="" style="color: rgb(112, 61, 170);">DispatchQueue</span>(label:<span class="" style="color: rgb(209, 47, 27);">"AudioPlayer"</span>, qos:.<span class="" style="color: rgb(186, 45, 162);">default</span>, attributes:[], autoreleaseFrequency:.<span class="" style="color: rgb(62, 30, 129);">workItem</span>, target:<span class="" style="color: rgb(186, 45, 162);">nil</span>)</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(79, 129, 135); background-color: rgb(255, 255, 255);"><span class=""> <span class="Apple-converted-space"> </span></span><span class="" style="color: rgb(186, 45, 162);">self</span><span class="">.</span>audioBuffers<span class=""><span class="Apple-converted-space"> </span>= [</span>PDAudioBuffer<span class="">]()</span></div><div class="" style="margin: 0px; font-size: 12px; line-height: normal; background-color: rgb(255, 255, 255); min-height: 14px;"><br class=""></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">var</span><span class="Apple-converted-space"> </span>tempAudioQueue :<span class="" style="color: rgb(112, 61, 170);">AudioQueueRef</span>?</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">var</span><span class="Apple-converted-space"> </span>dataFormat = source.<span class="" style="color: rgb(79, 129, 135);">mDataFormat</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">let</span><span class="Apple-converted-space"> </span>status =<span class="Apple-converted-space"> </span><span class="" style="color: rgb(62, 30, 129);">AudioQueueNewOutputWithDispatchQueue</span>(&tempAudioQueue, &dataFormat,<span class="Apple-converted-space"> </span><span class="" style="color: rgb(39, 42, 216);">0</span>,<span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">self</span>.<span class="" style="color: rgb(79, 129, 135);">dispatchQueue</span>) { [weak<span class="Apple-converted-space"> </span><span class="" style="text-decoration: underline; color: rgb(186, 45, 162);">s</span><span class="" style="color: rgb(186, 45, 162);">elf</span>] (queue, buffer)<span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">in // ERROR on this line</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">guard</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">let</span><span class="Apple-converted-space"> </span>this =<span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">self</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">else</span><span class="Apple-converted-space"> </span>{</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">return</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(0, 132, 0);">// block</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">guard</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">let</span><span class="Apple-converted-space"> </span>audioBuffer = this.<span class="" style="color: rgb(49, 89, 93);">audioBufferForAudioQueueBuffer</span>(aqBuffer:buffer)<span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">else</span><span class="Apple-converted-space"> </span>{</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">return</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(0, 132, 0);">// block</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> this.<span class="" style="color: rgb(79, 129, 135);">source</span>.<span class="" style="color: rgb(49, 89, 93);">fillBuffer</span>(audioBuffer)</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">if</span><span class="Apple-converted-space"> </span>status !=<span class="Apple-converted-space"> </span><span class="" style="color: rgb(39, 42, 216);">0</span><span class="Apple-converted-space"> </span>{</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">return</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">nil</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">guard</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">let</span><span class="Apple-converted-space"> </span>audioQueue = tempAudioQueue<span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">else</span><span class="Apple-converted-space"> </span>{</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">return</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">nil</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">self</span>.<span class="" style="color: rgb(79, 129, 135);">mQueue</span><span class="Apple-converted-space"> </span>= audioQueue</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 12px; line-height: normal; background-color: rgb(255, 255, 255); min-height: 14px;"><br class=""></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">private</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">func</span><span class="Apple-converted-space"> </span>audioBufferForAudioQueueBuffer(aqBuffer:<span class="" style="color: rgb(112, 61, 170);">AudioQueueBufferRef</span>) -><span class="Apple-converted-space"> </span><span class="" style="color: rgb(79, 129, 135);">PDAudioBuffer</span>? {</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">for</span><span class="Apple-converted-space"> </span>buffer<span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">in</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">self</span>.<span class="" style="color: rgb(79, 129, 135);">audioBuffers</span><span class="Apple-converted-space"> </span>{</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">if</span><span class="Apple-converted-space"> </span>buffer.<span class="" style="color: rgb(79, 129, 135);">audioQueueBuffer</span><span class="Apple-converted-space"> </span>== aqBuffer {</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">return</span><span class="Apple-converted-space"> </span>buffer</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> <span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">return</span><span class="Apple-converted-space"> </span><span class="" style="color: rgb(186, 45, 162);">nil</span></div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);"> }</div><div class="" style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);">}</div></div></div></div></blockquote></div></blockquote></div><br class=""></body></html>