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How to wait for several Futures?
....onFailure{case i => println(i)}
// this waits one second, then prints "java.lang.ArithmeticException: / by zero"
// the first to fail in traversal order
And:
val f1 = Future { Thread.sleep(1000) ; 5 / 0 }
val f2 = Future { 5 }
val f3 = Future { None.get }
sequenceOrBailOut(List(f1,f2,f3)).on...
使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...动应用程序。 与传统的Android应用程序开发通常需要使用Java编程不同，App Inventor封装了Android开发模型，并通过图形块隐藏了实现细节，使得Java编程代码对用户来说是不可见的。
因此，在 App Inventor 中构建应用程序只需要通过将...
What are important languages to learn to understand different approaches and concepts? [closed]
...he upswing and will only continue to grow in the future.
Prototype-based, JavaScript / Io / Self - Self is the grand-daddy and highly influential on every prototype-based language. This is not the same as class-based OOP and shouldn't be treated as such. Many people come to a prototype language a...
The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
...r better options to do this more cleanly in a single line, both using only Java built-in classes or using a utility library. See other answers below.
Since strings are immutable, you may want to use the StringBuilder class if you're going to alter the String in the code.
The StringBuilder class ...
Check whether number is even or odd
...0, not n % 2 == 1, because the latter doesn't work for negative numbers in Java.
– Jxek
Jan 8 '15 at 9:38
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show 15 more comments
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When exactly is it leak safe to use (anonymous) inner classes?
...Classes: Introduction
As I'm not sure how comfortable you are with OOP in Java, this will hit a couple of basics. A nested class is when a class definition is contained within another class. There are basically two types: Static Nested Classes and Inner Classes. The real difference between these ar...
How do I get IntelliJ to recognize common Python modules?
... 14 Ultimate has this feature, and it worked perfectly without breaking my Java module detection like db42's answer did.
– Patrick M
Oct 12 '15 at 15:30
...
How can you automatically remove trailing whitespace in vim
... keepp %s/\s\+$//e
call cursor(l, c)
endfun
autocmd FileType c,cpp,java,php,ruby,python autocmd BufWritePre <buffer> :call <SID>StripTrailingWhitespaces()
If you want to apply this on save to any file, leave out the second autocmd and use a wildcard *:
autocmd BufWritePre * :c...
Upload artifacts to Nexus, without Maven
I have a non-Java project that produces a versioned build artifact, and I want to upload this to a Nexus repository. Because the project isn't Java, it doesn't use Maven for builds. And I'd rather not introduce Maven/POM files just to get files into Nexus.
...
Pretty printing JSON from Jackson 2.2's ObjectMapper
...Mapper">
<property name="dateFormat">
<bean class="java.text.SimpleDateFormat">
<constructor-arg value="yyyy-MM-dd" />
<property name="lenient" value="false" />
</bean>
</property>
<property name="serializa...