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Why is a combiner needed for reduce method that converts type in java 8
...entity,
BinaryOperator<T> accumulator)
In your case, T is String, so BinaryOperator<T> should accept two String arguments and return a String. But you pass to it an int and a String, which results in the compilation error you got - argument mismatch; int cannot be converted to...
How to access parameters in a RESTful POST method
...
Your @POST method should be accepting a JSON object instead of a string. Jersey uses JAXB to support marshaling and unmarshaling JSON objects (see the jersey docs for details). Create a class like:
@XmlRootElement
public class MyJaxBean {
@XmlElement public String param1;
@XmlEl...
What is the difference between RegExp’s exec() function and String’s match() function?
... // match is now the next match, in array form.
}
// No more matches.
String.match does this for you and discards the captured groups.
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Git: How to rebase to a specific commit?
...atively, check out the branch first with:
git checkout topic
Rebase Any String of Commits to a Target Commit
The basic form of the command we need, cribbed from the documentation, is:
git rebase --onto <Target> [<Upstream> [<Branch>]]
<Branch> is optional and all it do...
Android: how to make an activity return results to the activity which calls it?
...u can make use of setData() to return result.
Intent data = new Intent();
String text = "Result to be returned...."
//---set the data to pass back---
data.setData(Uri.parse(text));
setResult(RESULT_OK, data);
//---close the activity---
finish();
So then again in the first activity you write the b...
搭建高可用mongodb集群(四)—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
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public class TestMongoDBShards {
public static void main(String[] args) {
try {
List addresses = new ArrayList();
ServerAddress address1 = new ServerAddress("192.168.0.136" , 20000);
ServerAddress address2 = new...
How to set the first option on a select box using jQuery?
.... <option></option> is not the same as an option with an empty-string value attribute i.e. <option value=""></option>, and you made it clear we need the value="" part 3) Even if there are no <option> with empty-string value; setting .val('') will "affect change", the se...
What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
...ng symlinks (on unixes).
Also note the following example with nio.Paths:
String canonical_path_string = "C:\\Windows\\System32\\";
String absolute_path_string = "C:\\Windows\\System32\\drivers\\..\\";
System.out.println(Paths.get(canonical_path_string).getParent());
System.out.println(Paths.get(a...
Objective-C Split()?
Is there any way to split strings in objective c into arrays? I mean like this - input string Yes:0:42:value into an array of (Yes,0,42,value)?
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
... however, make sure to look for the difference between JSON.parse and JSON.stringify unless you already know.
– usefulBee
Sep 2 '15 at 14:19
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