大约有 26,000 项符合查询结果（耗时：0.0333秒） [XML]
Is C++ context-free or context-sensitive?
I often hear claims that C++ is a context-sensitive language. Take the following example:
20 Answers
...
When should I use Struct vs. OpenStruct?
In general, what are the advantages and disadvantages of using an OpenStruct as compared to a Struct? What type of general use-cases would fit each of these?
...
Warning message: In `…` : invalid factor level, NA generated
...
Active
Oldest
Votes
...
How to remove a key from a Python dictionary?
When deleting a key from a dictionary, I use:
13 Answers
13
...
Stack, Static, and Heap in C++
I've searched, but I've not understood very well these three concepts. When do I have to use dynamic allocation (in the heap) and what's its real advantage? What are the problems of static and stack? Could I write an entire application without allocating variables in the heap?
...
How do I convert a pandas Series or index to a Numpy array? [duplicate]
Do you know how to get the index or column of a DataFrame as a NumPy array or python list?
8 Answers
...
Function overloading by return type?
Why don't more mainstream statically typed languages support function/method overloading by return type? I can't think of any that do. It seems no less useful or reasonable than supporting overload by parameter type. How come it's so much less popular?
...
How to output something in PowerShell
I am running a PowerShell script from within a batch file. The script fetches a web page and checks whether the page's content is the string "OK".
...
Difference between partition key, composite key and clustering key in Cassandra?
I have been reading articles around the net to understand the differences between the following key types. But it just seems hard for me to grasp. Examples will definitely help make understanding better.
...