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PHPCMS判断首页列表页内页分类 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...些标签判断,原理都是一样的,在公用模板上使用效率很高的,代码如下:
{if !$catid}首页{/if}
{if $child}栏目首页{/if}
{if $parentid}栏目列表页{/if}
{if $catname}栏目首页和栏目列表页{/if}
{if $id}内容页{/if}
{if $tag}标签列表页{/if}
PHP...
7-Zip for 32/64位 v16.02 - 软件下载 - 清泛网 - 专注C/C++及内核技术
...-Zip 主要特征
使用了 LZMA 与 LZMA2 算法的 7z 格式 拥有极高的压缩比
支持格式:
压缩 / 解压缩:7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
仅解压缩:ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VH...
低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别 · App Inventor 2 中文网
...类或监测类数据交换
SPP可以达到3Mbps或更高。提供较高的数据传输速率,适用于需要快速传输大量数据的应用,例如音频流、文件传输等。
蓝牙功耗
极低功耗:可达数月或几年的电池续航时间
较高功...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...质量等级会有额外的开销,一般用于安全性、可靠性要求高的场景,比如支付。
RetainFlag:保留消息
保留消息定义:如果PUBLISH消息的RETAIN标记位被设置为1,则称该消息为“保留消息”。
Broker对保留消息的处理:...
Spinlock versus Semaphore
... means that acquiring a spinlock is a "busy" operation that possibly burns CPU cycles for a long time (maybe forever!) while it effectively achieves "nothing".
The main incentive for such an approach is the fact that a context switch has an overhead equivalent to spinning a few hundred (or maybe tho...
淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...系统,文章主要介绍大秒系统以及这种典型读数据的热点问题的解决思路和实践经验。一些数据
大家还记得2013年的小米秒杀吗?三款小米手机各11万台开卖,走的都是大秒系统,3分钟后成为双十一第一家也是最快破亿的旗舰店...
What Process is using all of my disk IO
If I use "top" I can see what CPU is busy and what process is using all of my CPU.
7 Answers
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How to discover number of *logical* cores on Mac OS X?
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You can do this using the sysctl utility:
sysctl -n hw.ncpu
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Android studio using > 100% CPU at all times - no background processes appear to be running
I've noticed Android Studio (when running) uses greater than 100% CPU at all times, even when it appears there are no background processes that the IDE is running (indexing, etc). I might suspect this were something specific to my box, but some fellow developers are encountering this as well.
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转型产品经理必看 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...多人问我如何转型做产品经理、转型产品经理会遇到哪些问题,其实我一直没能回答好这个问题,因为我从运营转型产品经理的过程太顺利,并且转型的过程也没有做太多的思考和总结。直到看到这篇文章...作者完整记录了自己...