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Regular expression for matching latitude/longitude coordinates?
I'm trying to create a regular expression for matching latitude/longitude coordinates. For matching a double-precision number I've used (\-?\d+(\.\d+)?) , and tried to combine that into a single expression:
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getting the screen density programmatically in android?
How to get the screen density programmatically in android?
19 Answers
19
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How to enumerate an object's properties in Python?
I C# we do it through reflection. In Javascript it is simple as:
7 Answers
7
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What can be the reasons of connection refused errors?
I'm trying to write a server program in C,
using another client, I get this error when I try to connect through port 2080 for example.
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getResourceAsStream() vs FileInputStream
...erent, but thus not C:\Tomcat\webapps\contextname or whatever you'd expect it to be. In a normal Eclipse project, that would be C:\Eclipse\workspace\projectname. You can learn about the current working directory the following way:
System.out.println(new File(".").getAbsolutePath());
However, the wo...
How can I access and process nested objects, arrays or JSON?
...value pairs are also called the "properties".
Properties can be accessed either using dot notation
const value = obj.someProperty;
or bracket notation, if the property name would not be a valid JavaScript identifier name [spec], or the name is the value of a variable:
// the space is not a vali...
How do I manually create a file with a . (dot) prefix in Windows? For example, .htaccess
I want to create a .htaccess file manually and discovered it seems impossible through the Windows UI. I get a "you must type a filename." message. There has to be a way to create files with . as a prefix in Windows.
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Scala Doubles, and Precision
...o ROOT locale. E.g. "%.2f".formatLocal(java.util.Locale.ROOT,x).toDouble . It seems, format uses ',' because of the locale whereas toDouble is not able to take it in and throws a NumberFormatException. This of course is based on where your code is being run, not where it's developed.
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Calculate number of hours between 2 dates in PHP
...l, DateTimeZone and DatePeriod. The cool thing about this classes is, that it considers different timezones, leap years, leap seconds, summertime, etc. And on top of that it's very easy to use. Here's what you want with the help of this objects:
// Create two new DateTime-objects...
$date1 = new Da...
Proper way to implement IXmlSerializable?
... IXmlSerializable , what are the rules and best practices for implementing it? I've heard that GetSchema() should return null and ReadXml should move to the next element before returning. Is this true? And what about WriteXml - should it write a root element for the object or is it assumed t...