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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...
“java.lang.OutOfMemoryError: PermGen space” in Maven build [duplicate]
... They can even use JAVA_1_8_HOME which would emulate a poor mens toolchain selector)
– eckes
Mar 16 '16 at 23:25
the b...
Where can I find WcfTestClient.exe (part of Visual Studio)
...udio Installer, click on Modify, choose Individual components tab and then select (see below screenshot):
☑ Windows Communication Foundation
Click on Modify and voilà, application will be on your disk.
If you want to use WcfTestClient with no Visual Studio, see answer(s) on: How can the ...
Java Keytool error after importing certificate , “keytool error: java.io.FileNotFoundException & Acc
... to fix this problem.
Right click on cacerts > choose properties > select Securit tab > Allow all permissions to all the Group and user names.
This worked for me.
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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...
Multiline Comment Workarounds?
...
You can do this easily in RStudio:
select the code and click CTR+SHIFT+C
to comment/uncomment code.
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Unable to resolve host “” No address associated with hostname
...
Same for me! somehow Wifi and airplane mode can be selected so i only had to disable the airplane mode (i wasnt really connected to the internet-palmface)
– d1jhoni1b
Mar 18 '14 at 22:36
...
Is the SQL WHERE clause short-circuit evaluated?
...y use this for optional parameters. Is this the same as short circuiting?
SELECT [blah]
FROM Emp
WHERE ((@EmpID = -1) OR (@EmpID = EmpID))
This gives me the option to pass in -1 or whatever to account for optional checking of an attribute. Sometimes this involves joining on multiple tables, ...
IntelliJ IDEA with Junit 4.7 “!!! JUnit version 3.8 or later expected:”
...rations for tests so each time you have to fix running configuration by re-selecting test package. Otherwise NullPointerException during test run.
– Alfishe
Feb 22 '15 at 3:15
...
Memcached vs. Redis? [closed]
...
Use Redis if
You require selectively deleting/expiring items in the cache. (You need this)
You require the ability to query keys of a particular type. eq. 'blog1:posts:*', 'blog2:categories:xyz:posts:*'. oh yeah! this is very important. Use this to i...