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Is there a way to recover from an accidental “svn revert”?
I managed to shoot myself in the foot this morning by doing the following:
10 Answers
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Find duplicate lines in a file and count how many time each line was duplicated?
...len where n is number of lines). I'm working on files that are several gigabytes large, so performance is a key issue. I wonder whether there is a tool that does just the counting in a single pass using a prefix tree (in my case strings often have common prefixes) or similar, that should do the tric...
Elastic Search: how to see the indexed data
...ur ElasticSearch cluster is to use elasticsearch-head.
You can install it by doing:
cd elasticsearch/
./bin/plugin -install mobz/elasticsearch-head
Then (assuming ElasticSearch is already running on your local machine), open a browser window to:
http://localhost:9200/_plugin/head/
Alternative...
Configuring IntelliJ IDEA for unit testing with JUnit
...ses, see instructions below.
You can use the Create Test intention action by pressing Alt+Enter while standing on the name of your class inside the editor or by using Ctrl+Shift+T keyboard shortcut.
A dialog appears where you select what testing framework to use and press Fix button for the first ...
What's the difference between REST & RESTful
...(REST) is a style of software architecture. As described in a dissertation by Roy Fielding, REST is an "architectural style" that basically exploits the existing technology and protocols of the Web.
RESTful is typically used to refer to web services implementing such an architecture.
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How do I add a delay in a JavaScript loop?
...; // start the loop
You could also neaten it up, by using a self invoking function, passing the number of iterations as an argument:
(function myLoop(i) {
setTimeout(function() {
console.log('hello'); // your code here
if (--i) myLoop(i); ...
Likelihood of collision using most significant bits of a UUID in Java
...as Carl Seleborg mentions.
Incidentally, you would be slightly better off by using the least significant half of the UUID (or just generating a random long using SecureRandom).
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How to get commit history for just one branch?
...ommit, 3 would still be listed, 2 of them from master)
See commit e3fa568 by Junio C Hamano (gitster):
revision: parse "git log -<count>" more carefully
This mistyped command line simply ignores "master" and ends up showing two commits from the current HEAD:
$ git log -2master
be...
How do you remove all the options of a select box and then add one option and select it with jQuery?
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why not just use plain javascript?
document.getElementById("selectID").options.length = 0;
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SQL MAX of multiple columns?
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There are 3 more methods where UNPIVOT (1) is the fastest by far, followed by Simulated Unpivot (3) which is much slower than (1) but still faster than (2)
CREATE TABLE dates
(
number INT PRIMARY KEY ,
date1 DATETIME ,
date2 DATETIME ,
date3 DATETIME ,
...