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Maven plugins can not be found in IntelliJ
... had a few of these due to IntelliJ battling my company's proxy server. Finally blew them out. Thanks!
– paultamalunas
Oct 26 '17 at 23:12
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How to directly initialize a HashMap (in a literal way)?
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All Versions
In case you happen to need just a single entry: There is Collections.singletonMap("key", "value").
For Java Version 9 or higher:
Yes, this is possible now. In Java 9 a couple of factory methods have been added...
What does !! mean in ruby?
...:
!!nil #=> false
!!"abc" #=> true
!!false #=> false
It's usually not necessary to use though since the only false values to Ruby are nil and false, so it's usually best to let that convention stand.
Think of it as
!(!some_val)
One thing that is it used for legitimately is preventi...
CocoaPods Errors on Project Build
...o my Podfile. My solution was to remove the workspace file and run pod install again:
rm -rf MyProject.xcworkspace
pod install
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Printing everything except the first field with awk
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How to remove .html from URL?
...overflow.com/a/9204355/3217306
Update: I was slightly mistaken, . matches all characters except newlines, so includes whitespace. Also, here is a helpful regex cheat sheet
Sources:
http://community.sitepoint.com/t/what-does-this-mean-rewritecond-request-filename-f-d/2034/2
https://mediatemple.ne...
android splash screen sizes for ldpi,mdpi, hdpi, xhdpi displays ? - eg : 1024X768 pixels for ldpi
...le.
According to Google's statistics the majority of ldpi displays are small screens and the majority of mdpi, hdpi, xhdpi and xxhdpi displays are normal sized screens.
xlarge screens are at least 960dp x 720dp
large screens are at least 640dp x 480dp
normal screens are at least 470dp x 320dp
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Count number of rows within each group
I have a dataframe and I would like to count the number of rows within each group. I reguarly use the aggregate function to sum data as follows:
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浅谈APM在电子交易系统中的应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
浅谈APM在电子交易系统中的应用百度定义的APMAPM = Application Performance Management，应用性能管理，对企业系统即时监控以实现对应用程序性能管理和故障管理的系...百度定义的APM
APM = Application Performance Management，应用性能管理，...
Ruby on Rails Server options [closed]
..., Mongrel, Passenger, Apache, Nginx and many more I am sure, and I don't really understand the different roles they play.
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