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&& (AND) and || (OR) in IF statements
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No, it will not be evaluated. And this is very useful. For example, if you need to test whether a String is not null or empty, you can write:
if (str != null && !str.isEmpty()) {
doSomethingWith(str.charAt(0));
}
or,...
Git push rejected after feature branch rebase
OK, I thought this was a simple git scenario, what am I missing?
12 Answers
12
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Hidden features of mod_rewrite
There seem to be a decent number of mod_rewrite threads floating around lately with a bit of confusion over how certain aspects of it work. As a result I've compiled a few notes on common functionality, and perhaps a few annoying nuances.
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Using relative URL in CSS file, what location is it relative to?
... a background image URL in a CSS file, when using a relative URL, where is it relative to? For example:
8 Answers
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How do you effectively model inheritance in a database?
What are the best practices for modeling inheritance in databases?
9 Answers
9
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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?
... a reference to your Model property to attach the PropertyChanged event to it, then you can use a Messaging system such as Prism's EventAggregator or MVVM Light's Messenger.
I have a brief overview of messaging systems on my blog, however to summarize it, any object can broadcast a message, and any...
Android webview slow
...d webviews are slow. This is on everything from phones to 3.0+ tablets with more than adequate specs
10 Answers
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module.exports vs exports in Node.js
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var func = require('./module.js');
// the following line will **work** with module.exports
func();
Basically node.js doesn't export the object that exports currently references, but exports the properties of what exports originally references. Although Node.js does export the object module.expo...
Using a piano keyboard as a computer keyboard [closed]
...ing piano does not cause me pain. I have played piano for around 20 years without any pain issues. I would like to know if there is a way to capture MIDI from a MIDI keyboard and output keyboard strokes. I know nothing at all about MIDI but I would like some guidance on how to convert this signal in...
Why doesn't nodelist have forEach?
...st does not have a forEach method. I know that nodelist doesn't inherit from Array , but doesn't it seem like forEach would be a useful method to have? Is there a particular implementation issue I am not aware of that prevents adding forEach to nodelist ?
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