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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...
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...
Deep Learning(深度学习)学习笔记整理系列之(三) - 大数据 & AI - 清泛...
...算单元情况下对复杂函数的表示能力有限,针对复杂分类问题其泛化能力受到一定制约。深度学习可通过学习一种深层非线性网络结构,实现复杂函数逼近,表征输入数据分布式表示,并展现了强大的从少数样本集中学习数据集...
分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...一台服务器来提供数据服务的时候,我会遇到如下的两个问题:1)一台服务器的性能不足以提供足够的能力服务于所有的网络...当我们在生产线上用一台服务器来提供数据服务的时候,我会遇到如下的两个问题:
1)一台服务...
Processing Symbol Files in Xcode
I was wondering if anyone could tell me what Xcode is actually doing when it says: "Processing Symbol Files" after plugging in your device?
...
Profiling Django
...at queries are executed on each page and how much time they take. It's a really useful, powerful and easy to use tool.
Also, read recommendations about Django performance in Database access optimization from the documentation.
And Django performance tips by
Jacob Kaplan-Moss.
...
What is “overhead”?
... s/drive/go/ (If you're needing to drive somewhere you don't usually decide to walk...
– RCIX
May 19 '10 at 7:18
1
...
Is there a performance difference between i++ and ++i in C++?
...
However, if i is an instance of a C++ class, then i++ and ++i are making calls to one of the operator++ functions. Here's a standard pair of these functions:
Foo& Foo::operator++() // called for ++i
{
this->data += 1;
return *this;
}
Foo Foo::operator++(int ignored_dummy_value) ...
刘强东“一元年薪”背后的O2O棋局 - 资讯 - 清泛网 - 专注C/C++及内核技术
...类、鲜花、外卖送餐等各类生活服务项目,并基于移动端定位实现2小时内快速送达。
据京东方面透露,“京东到家”如今已开通7个城市,目前该业务订单数量快速增长,盈利模式是京东和超市分成。
刘强东称,长期来看,“...
Reading binary file and looping over each byte
...hile byte != "":
# Do stuff with byte.
byte = f.read(1)
finally:
f.close()
Python 2.5-2.7
with open("myfile", "rb") as f:
byte = f.read(1)
while byte != "":
# Do stuff with byte.
byte = f.read(1)
Note that the with statement is not available in versio...