大约有 48,000 项符合查询结果（耗时：0.0542秒） [XML]
When to use .First and when to use .FirstOrDefault with LINQ?
I've searched around and haven't really found a clear answer as to when you'd want to use .First and when you'd want to use .FirstOrDefault with LINQ.
...
What is the recommended way to delete a large number of items from DynamoDB?
...o do is call LogTable.DeleteItem(user_id) -
Without supplying the range, and have it delete everything for me.
An understandable request indeed; I can imagine advanced operations like these might get added over time by the AWS team (they have a history of starting with a limited feature set firs...
pythonw.exe or python.exe?
...ouble-click the file name to open the app. Only then do I see just the GUI and no console.
– Luther
Jul 28 at 6:54
add a comment
|
...
Why does Google prepend while(1); to their JSON responses?
...de the URL via a <script> tag. The URL is visited with your cookies, and by overriding the global array constructor or accessor methods they can have a method called whenever an object (array or hash) attribute is set, allowing them to read the JSON content.
The while(1); or &&&BL...
Selectively revert or checkout changes to a file in Git?
Is there a command that allows you to partially undo the changes to a file (or files) in the working directory?
4 Answers
...
How do I capture the output into a variable from an external process in PowerShell?
I'd like to run an external process and capture it's command output to a variable in PowerShell. I'm currently using this:
...
Why is good UI design so hard for some Developers? [closed]
... especially ). Are "back-end coders" doomed to only design business logic and data layers? Is there something we can do to retrain our brain to be more effective at designing pleasing and useful presentation layers?
...
Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
...ng functions, time , clock getrusage , clock_gettime , gettimeofday and timespec_get , I want to understand clearly how they are implemented and what are their return values in order to know in which situation I have to use them.
...
Should functions return null or an empty object?
...g data from functions. Is it better to return a Null or an empty object? And why should one do one over the other?
31 Ans...
Big-O for Eight Year Olds? [duplicate]
I'm asking more about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to p...