大约有 21,000 项符合查询结果（耗时：0.0346秒） [XML]
Scala: What is a TypeTag and how do I use it?
...[A] = {
// to get a Type for A the c.WeakTypeTag context bound must be added
val aType = implicitly[c.WeakTypeTag[A]].tpe
???
}
}
If one replaces WeakTypeTag with TypeTag an error is thrown:
<console>:17: error: macro implementation has wrong shape:
required: (c: scala.reflec...
Best practices for circular shift (rotate) operations in C++
Left and right shift operators (>) are already available in C++.
However, I couldn't find out how I could perform circular shift or rotate operations.
...
What does enctype='multipart/form-data' mean?
...oded (the default)
multipart/form-data
text/plain
Work was being done on adding application/json, but that has been abandoned.
(Other encodings are possible with HTTP requests generated using other means than an HTML form submission. JSON is a common format for use with web services and some stil...
Big-O for Eight Year Olds? [duplicate]
...erstand 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 perform won't grow because there are more items. And an ...
Compare two objects' properties to find differences?
...ertyInfo in firstType.GetProperties())
{
if (propertyInfo.CanRead)
{
object firstValue = propertyInfo.GetValue(first, null);
object secondValue = propertyInfo.GetValue(second, null);
if (!object.Equals(firstValue, secondValue))
{
...
RSA Public Key format
...
Community♦
111 silver badge
answered Oct 5 '12 at 16:28
BrunoBruno
107k2323 gold badges249249 silver ...
Which is faster: while(1) or while(2)?
...C: (tdm64-2) 4.8.1"
The important bits being:
.L2:
jmp .L2
I can't read assembly very well, but this is obviously an unconditional loop. The jmp instruction unconditionally resets the program back to the .L2 label without even comparing a value against true, and of course immediately does so a...
Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?
...led (most of the time) by using method references because there's not much advantage of using a constructive lambda function. They are a bit like static methods.
You can use them, but they have no real state.
The other type is the destructive one, it takes something and dismantles it as far as nee...
What is polymorphism, what is it for, and how is it used?
...ny languages, integers and floats are implicitly polymorphic since you can add, subtract, multiply and so on, irrespective of the fact that the types are different. They're rarely considered as objects in the usual term.
But, in that same way, a class like BigDecimal or Rational or Imaginary can al...
Efficiency of Java “Double Brace Initialization”?
...led into a separate class file.
The "double brace initialization", as already mentioned, is an anonymous inner class with an instance initialization block, which means that a new class is created for each "initialization", all for the purpose of usually making a single object.
Considering that the...