大约有 48,000 项符合查询结果（耗时：0.0510秒） [XML]
Is it possible to prevent an NSURLRequest from caching data or remove cached data following a reques
...P request using NSURLRequest for a chunk of data. Object allocation spikes and I assign the data accordingly. When I finish with the data, I free it up accordingly - however instruments doesn't show any data to have been freed!
...
What is the difference between the template method and the strategy patterns?
...e explain to me what is the difference between the template method pattern and the strategy pattern is?
16 Answers
...
Why can't R's ifelse statements return vectors?
I've found R's ifelse statements to be pretty handy from time to time. For example:
9 Answers
...
Regex to remove all (non numeric OR period)
... "joe ($3,004.50)" to be filtered down to 3004.50 but am terrible at regex and can't find a suitable solution. So only numbers and periods should stay - everything else filtered. I use C# and VS.net 2008 framework 3.5
...
Difference between using bean id and name in Spring configuration file
Is there any difference between using an id attribute and name attribute on a <bean> element in a Spring configuration file?
...
Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
I have a computer with 1 MB of RAM and no other local storage. I must use it to accept 1 million 8-digit decimal numbers over a TCP connection, sort them, and then send the sorted list out over another TCP connection.
...
NumPy or Pandas: Keeping array type as integer while having a NaN value
...
This capability has been added to pandas (beginning with version 0.24):
https://pandas.pydata.org/pandas-docs/version/0.24/whatsnew/v0.24.0.html#optional-integer-na-support
At this point, it requires the use of extension dtype Int64 (capitalized), rather than...
How do I pass multiple parameters into a function in PowerShell?
...g parameter, the first parameter seems to get all the data assigned to it, and remaining parameters are passed in as empty.
...
What is the best way to implement constants in Java? [closed]
...
That is perfectly acceptable, probably even the standard.
(public/private) static final TYPE NAME = VALUE;
where TYPE is the type, NAME is the name in all caps with underscores for spaces, and VALUE is the constant value;
I highly recommend NOT putting your constants in ...
How do I properly compare strings in C?
...trying to get a program to let a user enter a word or character, store it, and then print it until the user types it again, exiting the program. My code looks like this:
...