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Spring classpath prefix difference
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SIMPLE DEFINITION
The classpath*:conf/appContext.xml simply means that all appContext.xml files under conf folders in all your jars on the classpath will be picked up and joined into one big application context.
In contrast, classpath:conf/appContext.xml will load only one such file... the fir...
What is android:weightSum in android, and how does it work?
...e maximum weight sum, and is calculated as the sum of the layout_weight of all the children if not specified explicitly.
Let's consider an example with a LinearLayout with horizontal orientation and 3 ImageViews inside it. Now we want these ImageViews always to take equal space. To acheive this, yo...
Listing all permutations of a string/integer
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First of all: it smells like recursion of course!
Since you also wanted to know the principle, I did my best to explain it human language. I think recursion is very easy most of the times. You only have to grasp two steps:
The first ...
How to handle exceptions in a list comprehensions?
...n alternate values &c in case of exceptions), so it's impossible, literally speaking, to "handle exceptions in a list comprehension" because a list comprehension is an expression containing other expression, nothing more (i.e., no statements, and only statements can catch/ignore/handle exception...
List All Redis Databases
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Or you can just run the following command and you will see all databases of the Redis instance without firing up redis-cli:
$ redis-cli INFO | grep ^db
db0:keys=1500,expires=2
db1:keys=200000,expires=1
db2:keys=350003,expires=1
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How to format all Java files in an Eclipse project at one time?
...old Eclipse project and the code is not well formatted. I'd like to format all the .java files according to the settings in Eclipse. I don't want to edit every individual file with Ctrl + Shift + F . Is there a way to format all my files? Perhaps an Eclipse plugin?
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Select rows which are not present in other table
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There are basically 4 techniques for this task, all of them standard SQL.
NOT EXISTS
Often fastest in Postgres.
SELECT ip
FROM login_log l
WHERE NOT EXISTS (
SELECT -- SELECT list mostly irrelevant; can just be empty in Postgr...
How do you track record relations in NoSQL?
...pivotal tables (to add keys marking a relation between two objects) I am really stumped as to how you would be able to retrieve data in a way that would be useful for normal web pages.
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Remove the complete styling of an HTML button/submit
...button by using:
input, button, submit { border:none; }
If so..
Personally, I've found that you can't actually stop/override/disable this IE native action, which led me to change my markup a little to allow for this movement and not affect the overall look of the button for the various states.
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How to get all Errors from ASP.Net MVC modelState?
I want to get all the error messages out of the modelState without knowing the key values. Looping through to grab all the error messages that the ModelState contains.
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