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Virtual functions and performance - C++
...the iPhone is a good example of performant code: youtube.com/watch?v=Pdk2cJpSXLg
– Crashworks
Jun 10 '11 at 22:18
13
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Step-by-step debugging with IPython
... and a list of commands. IPython is now called (edit: part of) Jupyter.
ps: note that an ipdb command takes precedence over python code. So in order to write list(foo) you'd need print list(foo).
Also, if you like the ipython prompt (its emacs and vim modes, history, completions,…) it's easy t...
How to initialize log4j properly?
...stions in Linux how to determine your classpath value:
$ echo $CLASSPATH
$ ps wuax | grep -i classpath
$ grep -Ri classpath /etc/tomcat? /var/lib/tomcat?/conf /usr/share/tomcat?
or from Java: System.getProperty("java.class.path").
Log4j XML
Below is a basic XML configuration file for log4j in XML f...
Detect URLs in text with JavaScript
...ping inside the text, with JavaScript.
OK so lets just use this one: /(https?:\/\/[^\s]+)/g
Again, this is a bad regex. It will have many false positives. However it's good enough for this example.
function urlify(text) {
var urlRegex = /(https?:\/\/[^\s]+)/g;
return text.replace(urlReg...
【教学】AppInventor2人工智能应用：Personal Image Classifier (PIC) Tool...
...erimental-link-color)]《實戰AI資料導向式學習》，只有您自己最清楚「怎樣才是夠好的資料」，請[color=var(--fs-experimental-link-color)]直接下載 .aia來玩吧 （感謝CAVEDU 2019 實習生陳俊霖同學），本範例已經針對 CAVEDU AI 車情境的路牌訓練...
What's the best way to iterate over two or more containers simultaneously
... pattern occurs often in your data, consider using another pattern which zips two sequences and produces a range of tuples, corresponding to the paired elements:
for (auto& [a, b] : zip(containerA, containerB)) {
a = b;
}
The implementation of zip is left as an exercise for the reader, bu...
MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
...是限制使用Swap：
shell> sysctl vm.swappiness=0
查看内存情况最常用的是free命令：
shell> free -m
total used free shared buffers cached
Mem: 32101 29377 2723 0 239 25880
-/+ buffers/cache: 32...
MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
...是限制使用Swap：
shell> sysctl vm.swappiness=0
查看内存情况最常用的是free命令：
shell> free -m
total used free shared buffers cached
Mem: 32101 29377 2723 0 239 25880
-/+ buffers/cache: 32...
MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
...是限制使用Swap：
shell> sysctl vm.swappiness=0
查看内存情况最常用的是free命令：
shell> free -m
total used free shared buffers cached
Mem: 32101 29377 2723 0 239 25880
-/+ buffers/cache: 32...
MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
...是限制使用Swap：
shell> sysctl vm.swappiness=0
查看内存情况最常用的是free命令：
shell> free -m
total used free shared buffers cached
Mem: 32101 29377 2723 0 239 25880
-/+ buffers/cache: 32...