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C# elegant way to check if a property's property is null
...rom b in a.PropertyB
from c in b.PropertyC
select c.Value;
This returns null, if any of the nullable properties are null; otherwise, the value of Value.
class A { public B PropertyB { get; set; } }
class B { public C PropertyC { get; set; } }
class C { public strin...
Do you get charged for a 'stopped' instance on EC2? [closed]
...s mostly depend on the EC2 type of your choice. Unlike EC2-Classic, if you select EC2-VPC a stopped instance retains its associated Elastic IP addresses when it restarts.
– Chetabahana
Jul 16 '16 at 22:27
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ToList()— does it create a new list?
...ublic static void RunChangeList()
{
var objs = Enumerable.Range(0, 10).Select(_ => new MyObject() { SimpleInt = 0 });
var whatInt = ChangeToList(objs); // whatInt gets 0
}
public static int ChangeToList(IEnumerable<MyObject> objects)
{
var objectList = objects.ToList();
o...
How can I close a buffer without closing the window?
...s) left me a little confused. Let's say I split the display (:sp) and then select a different buffer to display in each window. Now I want to close one of the buffers, yet I don't want the window to close (After the closing it can display the next buffer on the list or an empty buffer, it doesn't ma...
Remove HTML Tags in Javascript with Regex
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@Adrian the last line will select the output of temp.textContent if it exists, and only try temp.innerText if it does not. Your browser should have the former, but for browsers that do not, the latter is used instead :)
– jsdw
...
Copy object values in Visual Studio debug mode
...
You can add a watch for that object, and in the watch window, expand and select everything you want to copy and then copy it.
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One-liner to take some properties from object in ES 6
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Why do you use hasOwnProperty? If the fields are hand-selected, even in seems to be more appropriate; although I'd go for omitting the check completely and just let them default to undefined.
– Bergi
Nov 24 '15 at 0:19
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Android java.lang.VerifyError?
...directory to the build class
path by (click right button on the
folder and select "Build path"->"Use
as source folder").
Rebuild your project.
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How do I install the OpenSSL libraries on Ubuntu?
...b to see a list of matching package names (which can help when you need to select the correct version of a package that has multiple versions or other variations available).
Bash completion is actually very useful... for example, you can also get a list of commands that apt-get supports by typing s...
Mac OS X Terminal: Map option+delete to “backward delete word”
...d tab → + button then choose modifier "option" and key "⌫ delete" then select the text field and press escape key then press the ⌫ key and you're done. Esc+⌫ does the same thing as ⌥⌫
– Stephane Gasparini
Sep 3 '19 at 21:58
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