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Java Reflection Performance
...operations have slower performance than their non-reflective counterparts, and should be avoided in sections of code which are called frequently in performance-sensitive applications.
Here's a simple test I hacked up in 5 minutes on my machine, running Sun JRE 6u10:
public class Main {
publ...
How to empty a list?
...ote that doing lst = [] does not empty the list, just creates a new object and binds it to the variable lst, but the old list will still have the same elements, and effect will be apparent if it had other variable bindings.
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How to set iPhone UIView z index?
...o move one view on top of another, how can I know the z index of the view, and how to move on to top?
9 Answers
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Archiving project in Xcode incorrectly creates multi-application bundle
...the Build Settings for all your dependent projects (e.g. static libraries) and make sure that the "Skip Install" option under "Deployment" is set to YES.
More detail here:
http://flakasoft.com/developer-tips/xcode-4-bug-solution-for-archiving-build-with-static-library/
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How to run JUnit tests with Gradle?
...dd a junit 4 dependency correctly?
Assuming you're resolving against a standard Maven (or equivalent) repo:
dependencies {
...
testCompile "junit:junit:4.11" // Or whatever version
}
Run those tests in the folders of tests/model?
You define your test source set the same way:
sour...
MySQL Insert Where query
...ySQL INSERT Syntax does not support the WHERE clause so your query as it stands will fail. Assuming your id column is unique or primary key:
If you're trying to insert a new row with ID 1 you should be using:
INSERT INTO Users(id, weight, desiredWeight) VALUES(1, 160, 145);
If you're trying to c...
How does OpenID authentication work?
...e of already existing internet technology (URI, HTTP, SSL, Diffie-Hellman) and realizes that people are already creating identities for themselves whether it be at their blog, photostream, profile page, etc. With OpenID you can easily transform one of these existing URIs into an account which can be...
Open file dialog box in JavaScript
... <input type='file' /> control itself. But a div is placed over that and css styles are applied to get that feel. Opacity of the file control is set to 0 so that it appears that the dialog window is opened when clicking on the div.
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Android: combining text & image on a Button or ImageButton
I'm trying to have an image (as the background) on a button and add dynamically, depending on what's happening during run-time, some text above/over the image.
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How to make a DIV visible and invisible with JavaScript
...roperty of that element. To show/hide, you can use two properties: display and visibility, which have slightly different effects:
Adjusting style.display will look as if element is not present at all ("removed").
elem.style.display = 'none'; // hide
elem.style.display = 'block'; // show - use this...