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How do I discover memory usage of my application in Android?
...total RAM they are using, and compare pss between processes to get a rough idea of their relative weight.
The other interesting metric here is PrivateDirty, which is basically the amount of RAM inside the process that can not be paged to disk (it is not backed by the same data on disk), and is not ...
Please explain some of Paul Graham's points on Lisp
..., so...)
So, if you're a Common Lisp programmer and you happen to like the idea of Clojure-style vector literals, you can just plug into the reader a function to react appropriately to some character sequence -- [ or #[ possibly -- and treat it as the start of a vector literal ending at the matching...
Adding a Method to an Existing Object Instance
...it is possible - But not recommended
I don't recommend this. This is a bad idea. Don't do it.
Here's a couple of reasons:
You'll add a bound object to every instance you do this to. If you do this a lot, you'll probably waste a lot of memory. Bound methods are typically only created for the short d...
Which parts of Real World Haskell are now obsolete or considered bad practice?
... for those topics, but here are some links to introductions to give you an idea what they're about. Also, if you want to use vectors, use the vectors package.
Control.Applicative
RWH uses Control.Applicative's (<$>) at several points, but doesn't explain Control.Applicative at all. LYAH and ...
How to test my servlet using JUnit
...e_DE - It happens during the execution of new MyServlet().doPost(...). Any idea what could be broken?
– Benny Neugebauer
Sep 14 '14 at 15:38
1
...
How can I plot with 2 different y-axes?
...
this is why link-only answers are a bad idea ... wiki.r-project.org appears defunct, I'm asking on r-devel@r-project.org.
– Ben Bolker
Sep 5 '14 at 22:31
...
Proper SCSS Asset Structure in Rails
...ables or mixins. You might consider this overhead, but I actually like the idea that you have to declare the dependencies of your styles in every file. Of course, it is important that you only import mixins and variables in the globals.css.scss as they do not add style definitions. Otherwise the sty...
When to use static vs instantiated classes
...onseFactory);
$httpResponse = $httpClient->request();
The main idea is to decouple the dependencies out of your classes. This way the code is much more extensible and, the most important part for me, testable. Why is it more important to be testable? Because I don't always write library ...
Difference between and
...two rows from the XML and added one. That's not a very big difference. The idea with annotations is that it's supposed to remove the XML.
So let's remove the XML definitions and replace them all with annotations:
package com.xxx;
import org.springframework.stereotype.Component;
@Component
public c...
How do I (or can I) SELECT DISTINCT on multiple columns?
...roughly equivalent to:
SELECT a,b,c FROM t GROUP BY a,b,c
It's a good idea to get used to the GROUP BY syntax, as it's more powerful.
For your query, I'd do it like this:
UPDATE sales
SET status='ACTIVE'
WHERE id IN
(
SELECT id
FROM sales S
INNER JOIN
(
SELECT salepr...