大约有 40,000 项符合查询结果（耗时：0.0550秒） [XML]
How to unzip a list of tuples into individual lists? [duplicate]
...l))
[(1, 3, 8), (2, 4, 9)]
The zip() function pairs up the elements from all inputs, starting with the first values, then the second, etc. By using *l you apply all tuples in l as separate arguments to the zip() function, so zip() pairs up 1 with 3 with 8 first, then 2 with 4 and 9. Those happen t...
SQL is null and = null [duplicate]
... 1), (1, 1);
select 'x = null' as test , x, y from t where x = null
union all
select 'x != null', x, y from t where x != null
union all
select 'not (x = null)', x, y from t where not (x = null)
union all
select 'x = y', x, y from t where x = y
union all
select 'not (x = y)', x, y from t where not (...
How can I list all collections in the MongoDB shell?
In the MongoDB shell, how do I list all collections for the current database that I'm using?
22 Answers
...
Is there a unique Android device ID?
...at Anthony's answer.
Full disclosure: my app used the below approach originally but no longer uses this approach, and we now use the approach outlined in the Android Developer Blog entry that emmby's answer links to (namely, generating and saving a UUID#randomUUID()).
There are many answers to this...
How to use Comparator in Java to sort
...rovided (use the 2-args sort)
Related questions
When to use Comparable vs Comparator
Sorting an ArrayList of Contacts
Also, do not use raw types in new code. Raw types are unsafe, and it's provided only for compatibility.
That is, instead of this:
ArrayList peps = new ArrayList(); // BAD!!...
Visual Studio - Resx File default 'internal' to 'public'
Every time I edit a resource file in VS, it regenerates the corresponding code and sets the class access modifier to internal.
It's a pain to Ctrl-F -> ReplaceAll every time I edit the resx. Is there a property/setting so that I can default this to public?
...
Why are there two kinds of functions in Elixir?
...rts with a clean slate and you don't get the variables of different scopes all mixed up together. You have a clear boundary.
We could retrieve the named hello function above as an anonymous function. You mentioned it yourself:
other_function(&hello(&1))
And then you asked, why I cannot s...
How do I get list of all tables in a database using TSQL?
What is the best way to get the names of all of the tables in a specific database on SQL Server?
17 Answers
...
How to find the .NET framework version of a Visual Studio project?
...
It depends which version of Visual Studio:
In 2002, all projects use .Net 1.0
In 2003, all projects use .Net 1.1
In 2005, all projects use .Net 2.0
In 2008, projects use .Net 2.0, 3.0, or 3.5; you can change the version in Project Properties
In 2010, projects use .Net 2.0, 3.0...
'System.Net.Http.HttpContent' does not contain a definition for 'ReadAsAsync' and no extension metho
...
or if you have VS 2012 you can goto the package manager console and type
Install-Package Microsoft.AspNet.WebApi.Client
This would download the latest version of the package
...