大约有 46,000 项符合查询结果（耗时：0.0517秒） [XML]
Using usort in php with a class private function
...
230
Make your sort function static:
private static function merchantSort($a,$b) {
return ......
Determining complexity for recursive functions (Big O notation)
...O notation, for each function:
int recursiveFun1(int n)
{
if (n <= 0)
return 1;
else
return 1 + recursiveFun1(n-1);
}
This function is being called recursively n times before reaching the base case so its O(n), often called linear.
int recursiveFun2(int n)
{
if (n &...
Check if a given Type is an Enum
... Ry-♦Ry-
192k4444 gold badges392392 silver badges404404 bronze badges
63
...
Open a buffer as a vertical split in VIM
...
207
Try:
:vert sb N
which will open a left vertical split (by default, unless you have modified ...
Round a double to 2 decimal places [duplicate]
If the value is 200.3456 , it should be formatted to 200.34 .
If it is 200 , then it should be 200.00 .
13 Answers
...
Which, if any, C++ compilers do tail-recursion optimization?
...s such as:
int bar(int, int);
int foo(int n, int acc) {
return (n == 0) ? acc : bar(n - 1, acc + 2);
}
int bar(int n, int acc) {
return (n == 0) ? acc : foo(n - 1, acc + 1);
}
Letting the compiler do the optimisation is straightforward: Just switch on optimisation for speed:
For MSVC,...
Why is the gets function so dangerous that it should not be used?
...guage up to the 1999 ISO C standard, but
it was officially removed by the 2011 standard. Most C implementations still support it, but at least gcc issues a warning for any code that uses it.
share
|
...
How to get object length [duplicate]
...an loop through the object yourself with a for (x in y) loop:
var count = 0;
var i;
for (i in a) {
if (a.hasOwnProperty(i)) {
count++;
}
}
The hasOwnProperty is there to make sure that you're only counting properties from the object literal, and not properties it "inherits" from ...
How to append contents of multiple files into one file
...
10 Answers
10
Active
...
printf() formatting for hex
...hy when printing hex as an 8 digit number with leading zeros, does this %#08X Not display the same result as 0x%08X ?
3 ...