大约有 8,400 项符合查询结果（耗时：0.0345秒） [XML]
Does every Core Data Relationship have to have an Inverse?
...n object graph management framework, not a persistence framework. In other words, its job is to manage the relationships between objects in the object graph. Inverse relationships make this much easier. For that reason, Core Data expects inverse relationships and is written for that use case. Withou...
What is the difference between a regular string and a verbatim string?
...ing literals. A verbatim string literal may span multiple lines.
In other words the only special character in a @"verbatim string literal" is the double-quote character. If you wish to write a verbatim string containing a double-quote you must write two double-quotes. All other characters are inter...
When is JavaScript's eval() not evil?
...oment to address the premise of your question - that eval() is "evil". The word "evil", as used by programming language people, usually means "dangerous", or more precisely "able to cause lots of harm with a simple-looking command". So, when is it OK to use something dangerous? When you know what th...
Why does std::getline() skip input after a formatted extraction?
... default that is the newline. If those X number of strings are just single words/tokens then this job can be easily accomplished with >>. Otherwise you would input the first number into an integer with >>, call cin.ignore() on the next line, and then run a loop where you use getline().
...
Optimal number of threads per core
...and read 256 bits values, that stops all threads in their step... in other words, 1 thread is probably a lot easier to implement and probably nearly as speedy if not actually faster. This will depend on your process & memory architecture, some advanced servers manage separate memory ranges for s...
Remove non-numeric characters (except periods and commas) from a string
...en consistent throughout the edit history" Yes, but it was obscured by the wording of the title until a few months after this answer.
– mopo922
Sep 24 at 20:18
...
“static const” vs “#define” vs “enum”
...ul as long as you don't need to use the name as a constant expression. The word "constant" in C means something that can be evaluated at compile time; const means read-only. const int r = rand(); is perfectly legal.
– Keith Thompson
Feb 26 '14 at 16:51
...
How to make a HTML Page in A4 paper size page(s)?
...ssible to make a HTML page behave, for example, like a A4-sized page in MS Word?
15 Answers
...
Safe (bounds-checked) array lookup in Swift, through optional bindings?
...line in where the fashion of Swift programming is going, which in Crusty's words¹ is: "Think protocols first"
• What do we want to do?
- Get an Element of an Array given an Index only when it's safe, and nil otherwise
• What should this functionality base it's implementation on?
- Array subs...
Why exactly is eval evil?
...r techniques, then I suppose there's nothing "evil" about it? In other words, the only problems with eval are the same with SQL queries and other techniques that use user input directly?
– Jay
Apr 3 '10 at 13:59
...