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FirstOrDefault: Default value other than null
...p6 = list.FirstOrDefault()?.Bar;
}
For C# 6.0 or later:
Use ?. or ?[ to test if is null before perform a member access Null-conditional Operators documentation
Example:
var barCSharp6 = list.FirstOrDefault()?.Bar;
C# older version:
Use DefaultIfEmpty() to retrieve a default value if the sequen...
What is the difference between “text” and new String(“text”)?
...als
The program consisting of the compilation unit (§7.3):
package testPackage;
class Test {
public static void main(String[] args) {
String hello = "Hello", lo = "lo";
System.out.print((hello == "Hello") + " ");
System.out.print((Other.hello == hello) + " ");
...
Vim: Move window left/right?
...
@David - just tested this and <c-w> r worked horizontally for me.
– ostler.c
Jan 9 '13 at 19:18
3
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How do I set a ViewModel on a window in XAML using DataContext property?
...m the View. Separating them is useful for when you want to write isolated test cases.
In App.xaml:
<Application
x:Class="BuildAssistantUI.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="c...
PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
...ng on HTTPS (unless you're running on a non-standard port, which I haven't tested).
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Cleaning up old remote git branches
...un
If it looks good, remove the --dry-run. Additionally, you may like to test this on a fork first.
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What is the optimal length for an email address in a database?
...positively-skewed). It is normally
distributed without the outliers (I
tested it.)
Min: 12 1st quartile: 19 Mean (w/
outliers): 23.04 Mean w/o outliers):
22.79 3rd quartile: 26 Max (w/ outliers): 47 Max (w/o outliers): 35
Median: 23 Mode: 24 Std. Dev (w/
outliers): 5.20 Std. Dev ...
Is it possible to hide extension resources in the Chrome web inspector network tab?
...utocomplete any form inputs, both of which are features I really need when testing web interfaces. You can stop any extension resources appearing easily enough by just creating a fresh user profile with no extensions installed (and you'll still have working autofill, unlike an incognito window). Ho...
What's the best way to determine the location of the current PowerShell script?
...
Just tested $PSScriptRoot and working as expected. However, it would give you an empty string if you run it at command line. It would only give you result if used in a script and script is executed. That's what it is meant for ......
How to make a transparent HTML button?
...t;button style="border:1px solid black; background-color: transparent;">Test</button>
This is doing an inline style. You're defining the border to be 1px, solid line, and black in color. The background color is then set to transparent.
UPDATE
Seems like your ACTUAL question is how do ...