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How can I count the number of matches for a regex?
...on)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public static void main(String[] args) {
String hello = "HelloxxxHelloxxxHello";
Pattern pattern = Pa...
How to exclude a directory in find . command
I'm trying to run a find command for all JavaScript files, but how do I exclude a specific directory?
38 Answers
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Automating “enter” keypresses for bash script generating ssh keys
I would like to create script, which simply runs ssh-keygen -t rsa . But how to pass to it 3 times enter?
5 Answers
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What integer hash function are good that accepts an integer hash key?
What integer hash function are good that accepts an integer hash key?
11 Answers
11
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How do I 'overwrite', rather than 'merge', a branch on another branch in Git?
...ge staging
EDIT 2020-07-30:
I thought a bit more about this question and possible solutions. If you absolutely require the merge parents in the correct order, need perform this action with a single command line invocation, and don't mind running plumbing commands, you can do the following:
$ git c...
jQuery vs document.querySelectorAll
... several times that jQuery's strongest asset is the way it queries and manipulates elements in the DOM: you can use CSS queries to create complex queries that would be very hard to do in regular javascript .
However , as far as I know, you can achieve the same result with document.querySelector o...
Check a collection size with JSTL
...
<c:if test="${companies.size() > 0}">
</c:if>
This syntax works only in EL 2.2 or newer (Servlet 3.0 / JSP 2.2 or newer). If you're facing a XML parsing error because you're using JSPX or Facelets instead of JSP, then use gt ins...
How to detect incoming calls, in an Android device?
I'm trying to make an app like, when a call comes to the phone I want to detect the number. Below is what I tried, but it's not detecting incoming calls.
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浅谈TCP优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
浅谈TCP优化很多人常常对TCP优化有一种雾里看花的感觉，实际上只要理解了TCP的运行方式就能掀开它的神秘面纱。Ilya Grigorik在「High Performance B...很多人常常对TCP优化有一种雾里看花的感觉，实际上只要理解了TCP的运行方式就能...
Quicksort vs heapsort
Both quicksort and heapsort do in-place sorting. Which is better? What are the applications and cases in which either is preferred?
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