大约有 16,000 项符合查询结果（耗时：0.0296秒） [XML]
C++ equivalent of StringBuffer/StringBuilder?
...e stream
ss << 4.5 << ", " << 4 << " whatever";
//convert the stream buffer into a string
std::string str = ss.str();
share
|
improve this answer
|
...
Static variables in member functions
...A::foo() is a non-template function. There will be only one copy of static int i inside the program.
Any instance of A object will affect the same i and lifetime of i will remain through out the program. To add an example:
A o1, o2, o3;
o1.foo(); // i = 1
o2.foo(); // i = 2
o3.foo(); // i = 3
o1.f...
What is the most efficient Java Collections library? [closed]
...
I've worked on quite a few data intensive projects where collections were a huge bottleneck. Java Collections are terribly inefficient (both memory and speed) especially if they store primitives.
– Jay Askren
Sep 25 '...
How do I get the height and width of the Android Navigation Bar programmatically?
...
Try below code:
Resources resources = context.getResources();
int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
if (resourceId > 0) {
return resources.getDimensionPixelSize(resourceId);
}
return 0;
...
How to check if all list items have the same value and return it, or return an “otherValue” if they
...ts, see this question. In that cases, you need to implement the IEquatable interface.
– Matt
May 14 '14 at 14:46
...
How to see if an object is an array without using reflection?
...esult is false.
That means you can do something like this:
Object o = new int[] { 1,2 };
System.out.println(o instanceof int[]); // prints "true"
You'd have to check if the object is an instanceof boolean[], byte[], short[], char[], int[], long[], float[], double[], or Object[], if you wan...
What is “:-!!” in C code?
I bumped into this strange macro code in /usr/include/linux/kernel.h :
5 Answers
5
...
How can I remove a character from a string using Javascript?
...g.prototype.removeCharAt = function (i) {
var tmp = this.split(''); // convert to an array
tmp.splice(i - 1 , 1); // remove 1 element from the array (adjusting for non-zero-indexed counts)
return tmp.join(''); // reconstruct the string
}
console.log("crt/r2002_2".removeCharAt(4));
Sin...
How to merge 2 List and removing duplicate values from it in C#
...rns all the elements
in the input sequences including
duplicates.
List<int> list1 = new List<int> { 1, 12, 12, 5};
List<int> list2 = new List<int> { 12, 5, 7, 9, 1 };
List<int> ulist = list1.Union(list2).ToList();
// ulist output : 1, 12, 5, 7, 9
...
Sleep for milliseconds
...r usleep, which accepts microseconds:
#include <unistd.h>
unsigned int microseconds;
...
usleep(microseconds);
share
|
improve this answer
|
follow
|
...