大约有 41,000 项符合查询结果（耗时：0.0646秒） [XML]
How do I render a partial of a different format in Rails?
...
Itay Grudev
5,82344 gold badges4242 silver badges7777 bronze badges
answered Feb 19 '12 at 5:27
Tim HainesTim Haines
...
SQL query to select dates between two dates
...
answered Feb 26 '11 at 4:37
DeepakDeepak
5,75122 gold badges1818 silver badges2424 bronze badges
...
How to find time complexity of an algorithm
...
405
How to find time complexity of an algorithm
You add up how many machine instructions it w...
css 'pointer-events' property alternative for IE
... KyleKyle
58.9k2727 gold badges137137 silver badges149149 bronze badges
4
...
Better naming in Tuple classes than “Item1”, “Item2”
...
|
edited Mar 14 '17 at 14:11
answered Oct 13 '16 at 6:42
...
Big-O summary for Java Collections Framework implementations? [closed]
...
4 Answers
4
Active
...
Plot correlation matrix into a graph
...ttice)
#Build the horizontal and vertical axis information
hor <- c("214", "215", "216", "224", "211", "212", "213", "223", "226", "225")
ver <- paste("DM1-", hor, sep="")
#Build the fake correlation matrix
nrowcol <- length(ver)
cor <- matrix(runif(nrowcol*nrowcol, min=0.4), nrow=nrow...
Find all records which have a count of an association greater than zero
...s an example
[10] pry(main)> Comment.distinct.pluck :article_id
=> [43, 34, 45, 55, 17, 19, 1, 3, 4, 18, 44, 5, 13, 22, 16, 6, 53]
[11] pry(main)> _.size
=> 17
[12] pry(main)> Article.joins(:comments).size
=> 45
[13] pry(main)> Article.joins(:comments).distinct.size
=> 17
[1...
Python's most efficient way to choose longest string in list?
...n documentation itself, you can use max:
>>> mylist = ['123','123456','1234']
>>> print max(mylist, key=len)
123456
share
|
improve this answer
|
follow
...
How to use JNDI DataSource provided by Tomcat in Spring?
... 8 JNDI Datasource HOW-TO
Tomcat 8 Context Resource Links Reference
Spring 4 JEE JNDI Lookup XML Schema Reference
Spring 4 JndiObjectFactoryBean Javadoc
Edit: This answer has been updated for Tomcat 8 and Spring 4. There have been a few property name changes for Tomcat's default datasource resour...