大约有 40,750 项符合查询结果（耗时：0.0272秒） [XML]
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
This is a question that came to mind while reading the brilliant answer by Mysticial to the question: why is it faster to process a sorted array than an unsorted array ?
...
How many levels of pointers can we have?
How many pointers ( * ) are allowed in a single variable?
14 Answers
14
...
How to delete an app from iTunesConnect / App Store Connect
I submitted a brand new app to AppStore and it got rejected by the Lords ... (nothing new there). What I want to do is delete that app completely from my itunesconnect account. I don't know what apple recently changed but in the past once the app was rejected I use to see a "delete" button on the su...
How can I use map and receive an index as well in Scala?
Is there any List/Sequence built-in that behaves like map and provides the element's index as well?
8 Answers
...
Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
I am looking at the MvcContrib Grid component and I'm fascinated, yet at the same time repulsed, by a syntactic trick used in the Grid syntax :
...
Should I use Java's String.format() if performance is important?
We have to build Strings all the time for log output and so on. Over the JDK versions we have learned when to use StringBuffer (many appends, thread safe) and StringBuilder (many appends, non-thread-safe).
...
remove None value from a list without removing the 0 value
This was my source I started with.
10 Answers
10
...
NSUserDefaults - How to tell if a key exists
I'm working on a small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple.
...
How do I make UILabel display outlined text?
All I want is a one pixel black border around my white UILabel text.
15 Answers
15
...
initialize a numpy array
Is there way to initialize a numpy array of a shape and add to it? I will explain what I need with a list example. If I want to create a list of objects generated in a loop, I can do:
...