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Benefit of using Parcelable instead of serializing object
...
From "Pro Android 2"
NOTE: Seeing Parcelable might have triggered the question, why is Android not using the
built-in Java serialization mechanism? It turns out that the
Android team came to the conclusion
t...
Immutable class?
...und this problem is to return a copy of an array or collection when called from a getter:
public List<T> getList() {
// return a copy of the list so the internal state cannot be altered
return new ArrayList(list);
}
What is the advantage of immutability?
The advantage of immutability c...
Static Classes In Java
...ed or instance fields accessed
Note that the compiler will not prevent you from declaring an instance (non-static) member. The issue will only show up if you attempt to call the instance member
Simple example per suggestions from above:
public class TestMyStaticClass {
public static void mai...
Java Ordered Map
...
From java 8 doc. LinkedHashMap whose order of iteration is the order in which its entries were last accessed
– TRiNE
May 15 '19 at 9:45
...
Finding the number of days between two dates
...time intervals not specific points in time, the format syntax is different from the date() and strftime() syntax. The time interval syntax can be found here: php.net/manual/en/dateinterval.format.php
– Andrew
Jun 4 '13 at 7:56
...
How to set JAVA_HOME in Linux for all users
... don't forget to delete the double quotes and recreate them from your keyboard, because only copying and pasting may create troubles.
– Sunil Kumar
Jan 13 '15 at 15:43
...
Equivalent to 'app.config' for a library (DLL)
...ame.dll.config, otherwise the below code won't work properly.
Now to read from this file have such function:
string GetAppSetting(Configuration config, string key)
{
KeyValueConfigurationElement element = config.AppSettings.Settings[key];
if (element != null)
{
string value = e...
Difference between abstract class and interface in Python
...I don't know what "substantial" means. It's "real" -- it has substance -- from a design perspective. But from a language perspective there may be no support. You could adopt conventions to distinguish between an abstract class and an interface class definition in Python.
– S...
How do I deep copy a DateTime object?
Now $date1 and $date2 contain the same date -- three years from now. I'd like to create two separate datetimes, one which is parsed from a string and one with three years added to it. Currently I've hacked it up like this:
...
.gitignore after commit [duplicate]
...repo. ( --cached since you probably want to keep the local copy but remove from the repo. ) So if you want to remove all the exe's from your repo do
git rm --cached /\*.exe
(Note that the asterisk * is quoted from the shell - this lets git, and not the shell, expand the pathnames of files and sub...