大约有 35,397 项符合查询结果(耗时:0.0316秒) [XML]
How to print color in console using System.out.println?
...
605
If your terminal supports it, you can use ANSI escape codes to use color in your output. It gen...
How to scale down a range of numbers with a known min and max value
...l. I want the height and width of each ellipse to be in a range of say 1-30. I have methods that find the minimum and maximum values from my data set, but I won't have the min and max until runtime. Is there an easy way to do this?
...
What is the difference between Ruby 1.8 and Ruby 1.9
...
170
Sam Ruby has a cool slideshow that outline the differences.
In the interest of bringing this in...
Ruby 2.0.0p0 IRB warning: “DL is deprecated, please use Fiddle”
...ns of Ruby, removed all of my gems
(including Rails), and installed Ruby 2.0. In other words, a totally clean re-install. Upon starting IRB, I received this message:
...
.NET String.Format() to add commas in thousands place for a number
...
String.Format("{0:n}", 1234); // Output: 1,234.00
String.Format("{0:n0}", 9876); // No digits after the decimal point. Output: 9,876
share
|
...
Fastest way to check if string contains only digits
...tsOnly(string str)
{
foreach (char c in str)
{
if (c < '0' || c > '9')
return false;
}
return true;
}
Will probably be the fastest way to do it.
share
|
...
How can I profile Python code line-by-line?
...
120
I believe that's what Robert Kern's line_profiler is intended for. From the link:
File: pyston...
Share Large, Read-Only Numpy Array Between Multiprocessing Processes
I have a 60GB SciPy Array (Matrix) I must share between 5+ multiprocessing Process objects. I've seen numpy-sharedmem and read this discussion on the SciPy list. There seem to be two approaches-- numpy-sharedmem and using a multiprocessing.RawArray() and mapping NumPy dtype s to ctype s. ...
Tricky Google interview question
... implementation of Dijkstra’s solution.
int main()
{
const int n = 20; // Generate the first n numbers
std::vector<int> v(n);
v[0] = 1;
int i2 = 0; // Index for 2
int i5 = 0; // Index for 5
int x2 = 2 * v[i2]; // Next two candidat...
Swapping column values in MySQL
...
204
I just had to deal with the same and I'll summarize my findings.
The UPDATE table SET X=Y, Y=...