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为什么大数据也不能帮你摆脱单身狗的命运？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...子找到宿命中的人，在线网站也让找到真爱的几率变大，操作又容易上手。据我所知，目前微信，陌陌，探探，世纪佳缘，match，tinder很多这样的“严肃”交友(约会)的工具，他们号称采用大数据建立人物画像，采用KNN聚合，DNN...
What is the advantage of using heredoc in PHP? [closed]
...ng</li>
<li>$whatever</li>
<li>$testing123</li>
</ul>
</div>
HTML;
// Sometime later
echo $html;
It is easy to read and easy to maintain.
The alternative is echoing quoted strings, which end up containing escaped quotes and IDEs aren't ...
What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
...
123
Please also note that the ConcurrentHashMap does not allow null keys or values. So they are NOT equal alternatives of a synchronized map.
...
Is it ok to use dashes in Python files when trying to import them?
...
123
One other thing to note in your code is that import is not a function. So import(python-code)...
Xcode 6 - How to pick signing certificate/provisioning profile for Ad-Hoc distribution?
...
AlexHsiehAlexHsieh
123
Remove rows with all or some NAs (missing values) in data.frame
...mptions --------------------
fakeData <- function(m, n, p){
set.seed(123)
m <- matrix(runif(m*n), nrow=m, ncol=n)
m[m<p] <- NA
return(m)
}
df <- cbind( data.frame(id = paste0('ID',seq(row_size)),
stringsAsFactors = FALSE),
data.frame(fak...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...log
/etc/rsyslog.conf
/etc/rsyslog.d
/etc/sysconfig/rsyslog
...
如果系统里有Syslog的话，那么在启动Rsyslog之前，别忘了先关闭它：
shell> service syslog stop
shell> service rsyslog start
如果运行Rsyslog时出现问题，那么可以通过激活调试模式来查...
HTTP status code for update and delete?
...atus code is the request sent by the client is valid (DELETE mySite/entity/123) and the entity to delete does not exist.
– Martin
Dec 30 '11 at 21:27
69
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How do I print a double value without scientific notation using Java?
...
123
You could use printf() with %f:
double dexp = 12345678;
System.out.printf("dexp: %f\n", dexp)...
Why implement interface explicitly?
...
Michael BMichael B
7,21233 gold badges2424 silver badges5252 bronze badges
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