大约有 14,200 项符合查询结果（耗时：0.0290秒） [XML]
How to assign colors to categorical variables in ggplot2 that have stable mapping?
...
For simple situations like the exact example in the OP, I agree that Thierry's answer is the best. However, I think it's useful to point out another approach that becomes easier when you're trying to maintain consistent color schemes across multiple data fr...
Python: avoid new line with print command [duplicate]
...command, it prints whatever I want and then goes to a different line. For example:
5 Answers
...
What does the restrict keyword mean in C++?
...per, it's interesting and worth the time.
Edit
I also found that IBM's AIX C/C++ compiler supports the __restrict__ keyword.
g++ also seems to support this as the following program compiles cleanly on g++:
#include <stdio.h>
int foo(int * __restrict__ a, int * __restrict__ b) {
return...
Swift Beta performance: sorting arrays
..., 2, 2, 5, 8, 1234]
Both are called in the same program as written.
var x_swift = CInt[](count: n, repeatedValue: 0)
var x_c = CInt[](count: n, repeatedValue: 0)
for var i = 0; i < n; ++i {
x_swift[i] = CInt(random())
x_c[i] = CInt(random())
}
let swift_start:UInt64 = mach_absolute_ti...
How do I convert a float number to a whole number in JavaScript?
...ipt 6
var intvalue = Math.trunc( floatvalue );
Math object reference
Examples
Positive
// value=x // x=5 5<x<5.5 5.5<=x<6
Math.floor(value) // 5 5 5
Math.ceil(value) // 5 6 6
Math.round(value) // 5 ...
How to dynamic new Anonymous Class?
In C# 3.0 you can create anonymous class with the following syntax
3 Answers
3
...
python max function using 'key' and lambda expression
I come from OOP background and trying to learn python.
I am using the max function which uses a lambda expression to return the instance of type Player having maximum totalScore among the list players .
...
Set a default parameter value for a JavaScript function
...
@SiPlus and you got extra reference errors for free of charge while trying to use undefined objects :p Even while it may work with some browsers and might be faster, null is still an object and undefined is reference to primitive type that is try...
How do lexical closures work?
While I was investigating a problem I had with lexical closures in Javascript code, I came along this problem in Python:
9 ...
How do I declare a 2d array in C++ using new?
...f T" and be an incomplete type, while T[][] would be an invalid type (all except the last dimensions must have a known size). T[N][M] is "array [N] of array[M] of T", while yours, T[sizeX] is "array [sizeX] of T" where T is a pointer to an int. Creating a dynamically 2d array works like this: new in...