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LINQ's Distinct() on a particular property
... is a "distinct-by" effectively. I don't believe it's part of LINQ as it stands, although it's fairly easy to write:
public static IEnumerable<TSource> DistinctBy<TSource, TKey>
(this IEnumerable<TSource> source, Func<TSource, TKey> keySelector)
{
HashSet<TKey>...
Javascript: How to check if a string is empty? [duplicate]
I know this is really basic, but I am new to javascript and can't find an answer anywhere.
5 Answers
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TextView.setTextSize behaves abnormally - How to set text size of textview dynamically for different
...for each screen density (ldpi, mdpi, hdpi).
getTextSize(), on the other hand, returns the actual pixel dimensions of the text.
You can use setTextSize(int unit, float size) to specify a unit type. The constant values for this can be found in the TypedValue class, but some of them are:
TypedValue...
Get Maven artifact version at runtime
...ion element of the maven-jar-plugin to set addDefaultImplementationEntries and addDefaultSpecificationEntries to true, like this:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
&l...
Using C++ library in C code
...lemented in C++.
If you need to expose a full C++ class with data members and methods, then you may need to do more work than this simple function example.
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What does ^M character mean in Vim?
I keep getting ^M character in my vimrc and it breaks my configuration.
15 Answers
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Scripting Language vs Programming Language [closed]
Can anyone explain the difference between Scripting Language and Programming Language please?
Also can you state some examples for each. I have Googled a lot but I always find the best answers from Stack Overflow.
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How to get Activity's content view?
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this.getWindow().getDecorView().findViewById(android.R.id.content)
or
this.findViewById(android.R.id.content)
or
this.findViewById(android.R.id.content).getRootView()
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Initial size for the ArrayList
... immediately obvious from the api why you cannot set BOTH the initial size and the initial capacity in a single constructor call. You sort of have to read through the api and say "Oh, I guess ArrayList does not have a method or constructor to do that"
– demongolem
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Binding a Button's visibility to a bool value in ViewModel
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Assuming AdvancedFormat is a bool, you need to declare and use a BooleanToVisibilityConverter:
<!-- In your resources section of the XAML -->
<BooleanToVisibilityConverter x:Key="BoolToVis" />
<!-- In your Button declaration -->
<Button
Height="50" Width="...