大约有 7,800 项符合查询结果（耗时：0.0213秒） [XML]
Dump Mongo Collection into JSON format
...ay to dump mongo collection into json format? Either on the shell or using java driver.I am looking for the one with best performance.
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How to check if current thread is not main thread
... 'Android' and this was my top result. To that end, for the non-Android SO Java users landing here, don't forget about:
public static void main(String[] args{
Thread.currentThread().setName("SomeNameIChoose");
/*...the rest of main...*/
}
After setting this, elsewhere in your code, you ca...
How to develop a soft keyboard for Android? [closed]
...build the LatinIME keyboard. I cloned the repo but when I try to build the java part it seems to complain about the native part, and I can't figure out how to get the ndk to build the right part. Any tips?
– Ibrahim
Mar 7 '11 at 9:10
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ArrayIndexOutOfBoundsException when using the ArrayList's iterator
...String s : arrayList)
if (s.equals(value))
// ...
As for
java.lang.ArrayIndexOutOfBoundsException: -1
You just tried to get element number -1 from an array. Counting starts at zero.
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What does the question mark operator mean in Ruby?
... even strongly typed languages have conventions like this. For example, in Java methods that return a boolean value are often prefixed with "is", as in isEmpty(), isDigit(), etc. In Ruby, the same methods would be written empty?, and digit? which is quite a bit nicer IMO.
– Aje...
Check if instance is of a type
...favorite. typeof(Class).IsAssignableFrom(object.getType()) similar to the Java instanceof operator.
– SkidRunner
Nov 7 '16 at 16:42
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When to use “new” and when not to, in C++? [duplicate]
When should I use the "new" operator in C++? I'm coming from C#/Java background and instantiating objects is confusing for me.
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Gradle store on local file system
...ee where Gradle has cached artifacts with a simple script:
apply plugin: 'java'
repositories{
mavenCentral()
}
dependencies{
compile 'com.google.guava:guava:12.0'
}
task showMeCache << {
configurations.compile.each { println it }
}
Now if you run gradle showMeCache it should downlo...
Android dismiss keyboard
...nputMethodManager }
val windowHeightMethod = InputMethodManager::class.java.getMethod("getInputMethodWindowVisibleHeight")
val height = windowHeightMethod.invoke(imm) as Int
if (height > 0) {
imm.toggleSoftInput(InputMethodManager.HIDE_IMPLICIT_ONLY, 0)
}
}
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Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...me first serve. If you run sc.makeRDD(0 to 9, 2).mapPartitions(it => { java.lang.Thread.sleep(new java.util.Random().nextInt(1000)); it } ).map(_.toString).fold("")(_ + _) with 2+ cores several times, I think you will see it produces random (partition-wise) order. I've updated my answer accordin...