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Two single-column indexes vs one two-column index in MySQL?
... "MySQL can use multiple-column indexes for queries that test all the columns in the index, or queries that test just the first column, the first two columns, the first three columns, and so on. If you specify the columns in the right order in the index definition, a single composite in...
Properly escape a double quote in CSV
...le double quote to escape a double quote. You can use a command-line tool called csvfix to detect any lines which don't conform: csvfix check -nl -v [filename]
– Sam Critchley
Jun 30 '16 at 14:51
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How do you make a web application in Clojure? [closed]
... is Compojure: http://github.com/weavejester/compojure/tree/master
It's small but powerful, and has beautifully elegant syntax. (It uses Jetty under the hood, but it hides the Servlet API from you unless you want it, which won't be often). Go look at the README at that URL, then download a snapshot...
Encrypt Password in Configuration Files? [closed]
...simple way of doing this is to use Password Based Encryption in Java. This allows you to encrypt and decrypt a text by using a password.
This basically means initializing a javax.crypto.Cipher with algorithm "AES/CBC/PKCS5Padding" and getting a key from javax.crypto.SecretKeyFactory with the "PBKDF...
Install Marketplace plugin on Eclipse Juno
...asy way to add Eclipse MarketPlace
1. Go to http://eclipse.org/mpc/archive.php and download mpc zip for your eclipse.
2. Than go to Eclipse -> Help -> Install New Software and Add and select Archive file Location
then press ok, it will check dependency and install it.
And Enjoy....
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HTML/CSS: Making two floating divs the same height
... peculiar problem that I currently solve using a table , see below. Basically, I want to have two divs take up 100% of the available width, but only take up as much vertical space as needed (which isn't really that obvious from the picture). The two should at all times have the exact same height ...
doGet and doPost in Servlets
...ould use doPost() when you want to intercept on HTTP POST requests. That's all. Do not port the one to the other or vice versa (such as in Netbeans' unfortunate auto-generated processRequest() method). This makes no utter sense.
GET
Usually, HTTP GET requests are idempotent. I.e. you get exactly t...
Why should I care that Java doesn't have reified generics?
...esn't have reified generics but, when pushed, the candidate couldn't actually tell me the sort of things that he could have achieved were they there.
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In JPA 2, using a CriteriaQuery, how to count results
...onfuse these concepts :-) JPA comes with very powerfull/ complex API that allows you to do multiple joins/ fetches/ aggregations/ aliases etc in a single query. You have to deal with it while counting.
– G. Demecki
Sep 14 '15 at 8:16
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Strip HTML from Text JavaScript
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@Magnus Smith: Yes, if whitespace is a concern - or really, if you have any need for this text that doesn't directly involve the specific HTML DOM you're working with - then you're better off using one of the other solutions given here. The primary advantages of this method are ...