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How to test if one java class extends another at runtime?
...e will return true if the class/instance is a member of the type hierarchy and are not restrictive to direct superclass/subclass relationships. For example:
// if A.class extends B.class, and B.class extends C.class
C.class.isAssignableFrom(A.class); // evaluates to true
// ...and...
new A() instan...
How to add a 'or' condition in #ifdef
...ned. If you want it to happen if neither of them are defined, you'd use an AND: #if !defined(CONDITION1) && !defined(CONDITION2).
– cp.engr
Feb 20 '17 at 18:26
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Pushing app to heroku problem
I am trying to push my app to heroku and I get the following message:
4 Answers
4
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How do I stop Notepad++ from showing autocomplete for all words in the file
...++ provides 2 types of features:
Auto-completion that read the open file and provide suggestion of words and/or functions within the file
Suggestion with the arguments of functions (specific to the language)
Based on what you write, it seems what you want is auto-completion on function only + su...
How to make CSS3 rounded corners hide overflow in Chrome/Opera
...w: hidden works in simple situations, but breaks in webkit based browsers and Opera when the parent is positioned relatively or absolutely.
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Turning a string into a Uri in Android
...ri = Uri.parse("http://www.google.com");
Here's the doc http://developer.android.com/reference/android/net/Uri.html#parse%28java.lang.String%29
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What are markers in Java Logging frameworks and what is a reason to use them?
...d triggering in the logback documentation. You may also combine log levels and markers for triggering.
Filtering: Markers are very useful for making certain valuable log statements stand out. For example, you can color/mark all your persistence related logs (in various and multiple class files) wi...
@Nullable annotation usage
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It makes it clear that the method accepts null values, and that if you override the method, you should also accept null values.
It also serves as a hint for code analyzers like FindBugs. For example, if such a method dereferences its argument without checking for null first, Fin...
Format an Integer using Java String Format
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StringUtils.leftPad is another good choice and could be argued that it is more readable plus it allows you to pad with other characters. I have had a Google around but I cannot find anything that confirms it is faster - could you provide some evidence for that?
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Placing an image to the top right corner - CSS
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Position the div relatively, and position the ribbon absolutely inside it. Something like:
#content {
position:relative;
}
.ribbon {
position:absolute;
top:0;
right:0;
}
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