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How do I join two lists in Java?
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In Java 8:
List<String> newList = Stream.concat(listOne.stream(), listTwo.stream())
.collect(Collectors.toList());
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Android ClassNotFoundException: Didn't find class on path
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If you added a new Library Project as a module to your Android project and you're using Kotlin in your library do not forget to add
apply plugin: 'kotlin-android'
to top of your module's Gradle file. Android Studio does not add this lin...
How to store arrays in MySQL?
...ample, where you may think "I'd like a list of stuff here", instead make a new table, linking the row in one table with the row in another table.[1] That way, you can represent M:N relationships. Another advantage is that those links will not clutter the row containing the linked item. And the datab...
Finding a substring within a list in Python [duplicate]
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print [s for s in list if sub in s]
If you want them separated by newlines:
print "\n".join(s for s in list if sub in s)
Full example, with case insensitivity:
mylist = ['abc123', 'def456', 'ghi789', 'ABC987', 'aBc654']
sub = 'abc'
print "\n".join(s for s in mylist if sub.lower() in s....
What to do Regular expression pattern doesn't match anywhere in string?
...rticular parsing task. Everyone’s level of skill is different, and every new task is different. For jobs where you have a well-defined input set, regexes are obviously the right choice, because it is trivial to put some together when you have a restricted subset of HTML to deal with. Even regex be...
Breakpoint on property change
... dev tools as a snippet (sources --> snippets --> right-click --> new --> paste this), you can use it anytime.
To use it, open the dev-tools and run the snippet. Then to break when myObject.myProperty is changed, call this from the dev-console:
breakOn(myObject, 'myProperty');
You...
Can you use reflection to find the name of the currently executing method?
...part since no one else used the exact same technique:
string MethodName = new StackFrame(0).GetMethod().Name;
This should return identical results to the MethodBase.GetCurrentMethod().Name technique, but it's still worth pointing out because I could implement this once in its own method using ind...
When should I use “this” in a class?
...public class Foo
{
public String useBarMethod() {
Bar theBar = new Bar();
return theBar.barMethod(this);
}
public String getName() {
return "Foo";
}
}
public class Bar
{
public void barMethod(Foo obj) {
obj.getName();
}
}
Case 3: Using this...
LINQ's Distinct() on a particular property
...unc<TSource, TKey> keySelector)
{
HashSet<TKey> seenKeys = new HashSet<TKey>();
foreach (TSource element in source)
{
if (seenKeys.Add(keySelector(element)))
{
yield return element;
}
}
}
So to find the distinct values using jus...
Localization and internationalization, what's the difference?
...ize it by hiring a translator to build the zh-CN resource files, and use a new date/time/currency format.
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