大约有 44,000 项符合查询结果（耗时：0.0587秒） [XML]
C# List of objects, how do I get the sum of a property
...
Another alternative:
myPlanetsList.Select(i => i.Moons).Sum();
share
|
improve this answer
|
follow
|
...
Move window between tmux clients
...ror is generated. If -d is given, the
newly linked window is not selected.
This means that you can share a window across multiple sessions:
Assuming I have these 2 sessions: daemons and proj
tmux link-window -dk -s daemons:0 -t proj:0
...
How to filter Pandas dataframe using 'in' and 'not in' like in SQL
...
Note that if you want to search every column, you'd just omit the column selection step and do
df2.isin(c1).any(axis=1)
Similarly, to retain rows where ALL columns are True, use all in the same manner as before.
df2[df2[['A', 'B']].isin(c1).all(axis=1)]
A B C
0 x w 0
Notable Ment...
“Cannot evaluate expression because the code of the current method is optimized” in Visual Studio 20
...this issue when I was using VS 2010. My solution configuration has (Debug) selected. I resolved this by unchecking the Optimize Code property under project properties.
Project (right Click)=> Properties => Build (tab) => uncheck Optimize code
...
Entity Framework with NOLOCK
...SMS, open a query (#1) and run: CREATE TABLE ##Test(Col1 INT); BEGIN TRAN; SELECT * FROM ##Test WITH (TABLOCK, XLOCK);. Open another query (#2) and run: SELECT * FROM ##Test;. The SELECT won't return as it is being blocked by the still open transaction in tab #1 that is using an exclusive lock. Canc...
AutoMapper vs ValueInjecter [closed]
...o in case you need it with ValueInjecter you just do something like:
foos.Select(o => new Bar().InjectFrom(o));
you can also use ValueInjecter to map from anonymous and dynamic objects
differences:
automapper create configuration for each mapping possibility CreateMap()
valueinjecter inject ...
getting the X/Y coordinates of a mouse click on an image with jQuery [duplicate]
...
For sure better than the selected one.
– Mangirdas Skripka
Jan 10 '15 at 11:43
...
How to calculate time in hours between two dates in iOS
...developer.apple.com/library/mac/navigation/
or if you are using Xcode just select help/documentation from the menu.
See: how-to-convert-an-nstimeinterval-seconds-into-minutes
--edit: See ÐąrέÐέvil's answer below for correctly handling daylight savings/leap seconds
...
How to use Boost in Visual Studio 2010
...nager and expand one of the configuration for the platform of your choice.
Select & right click Microsoft.Cpp.<Platform>.user, and select Properties to open the Property Page for edit.
Select VC++ Directories on the left.
Edit the Include Directories section to include the path to your boo...
Could not load file or assembly 'System.Web.Http 4.0.0 after update from 2012 to 2013
...b API 2.1 WebHost.
In solution explorer in the references right click and select manage nuget packages. (if not there install nuget)
In the manage NuGet Packages window on the left side click online then in top right search for Web Host and install Microsoft ASP.NET Web API 2.1 Web Host. (Once i...