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无人驾驶汽车大难题 人工智能同人的差距显著 - 资讯 - 清泛网 - 专注C/C++...
...中更顺畅地行驶。与此同时，这些数据还被用于不断改善软件，以便所有车辆能够从一辆车的经验中吸取教训。2009年，谷歌自动驾驶汽车就已经以自动驾驶模式行驶了193万公里行程，其软件已经能够轻易地控制变道、超车等系...
Test if string is a number in Ruby on Rails
...il 1154461.1 (±5.5%) i/s - 5788976 in 5.035311s
require 'benchmark/ips'
int = '220000'
bad_int = '22.to.2'
Benchmark.ips do |x|
x.report('cast') do
Integer(int) rescue false
end
x.report('cast fail') do
Integer(bad_int) rescue false
end
x.report('to_s') do
int.to_i....
阿里双11大型项目管理怎么玩？ - 项目管理 - 清泛网 - 专注C/C++及内核技术
...前如期保质保量地上线？
2016年7月底，阿里巴巴菜鸟网络工程效能团队乐学*开始尝试使用阿里巴巴研发协同平台RDC的项目集管理、项目风险进度及健康度管理等功能。
*乐学：本名于旭东，供职于阿里巴巴菜鸟网络工程效...
Why must a lambda expression be cast when supplied as a plain Delegate parameter
...keRequired code pattern are very helpful.
– Erik Philips
Jan 9 '13 at 1:12
...
write a shell script to ssh to a remote machine and execute commands
...
There are multiple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ...
Connect Java to a MySQL database
... default 3306.
Download the JDBC driver and put in classpath, extract the ZIP file and put the containing JAR file in the classpath. The vendor-specific JDBC driver is a concrete implementation of the JDBC API (tutorial here).
If you're using an IDE like Eclipse or Netbeans, then you can add it to...
大单融资后，MOOC去哪儿 - 资讯 - 清泛网 - 专注C/C++及内核技术
...的高校竞争
2013年被称为中国MOOC元年。这种大型开放式网络课程在进入国内后便在一片质疑声中戴上光环，迎来了迅猛的发展。目前国内MOOC领域已分为两种，一为以果壳网等公司为代表的互联网企业，二为以北大、清华为代表...
How to configure socket connect timeout
When the Client tries to connect to a disconnected IP address, there is a long timeout over 15 seconds... How can we reduce this timeout? What is the method to configure it?
...
How to get execution time in rails console?
...be better to add another answer or comment with reference to the benchmark-ips gem? You've done quite a big edit to the answer there which changes it significantly and rather reduces the appropriateness of the votes on it already.
– Shadwell
Jan 2 '17 at 13:01
...
what happens when you type in a URL in browser [closed]
...TPS, no HTTP2, no extras), simplest possible DNS, no proxies, single-stack IPv4, one HTTP request only, a simple HTTP server on the other end, and no problems in any step. This is, for most contemporary intents and purposes, an unrealistic scenario; all of these are far more complex in actual use, a...