大约有 4,760 项符合查询结果(耗时:0.0311秒) [XML]
Finding the source code for built-in Python functions?
Is there a way to see how built in functions work in python? I don't mean just how to use them, but also how were they built, what is the code behind sorted or enumerate etc...?
...
Installing Python 3 on RHEL
I'm trying to install python3 on RHEL using the following steps:
19 Answers
19
...
Iterating over every two elements in a list
How do I make a for loop or a list comprehension so that every iteration gives me two elements?
21 Answers
...
Set Colorbar Range in matplotlib
...e colors. Here's an example:
import matplotlib as m
import matplotlib.pyplot as plt
import numpy as np
cdict = {
'red' : ( (0.0, 0.25, .25), (0.02, .59, .59), (1., 1., 1.)),
'green': ( (0.0, 0.0, 0.0), (0.02, .45, .45), (1., .97, .97)),
'blue' : ( (0.0, 1.0, 1.0), (0.02, .75, .75), (1...
When should I use a struct instead of a class?
MSDN says that you should use structs when you need lightweight objects. Are there any other scenarios when a struct is preferable over a class?
...
Are +0 and -0 the same?
...From Wikipedia:
Signed zero is zero with an associated sign. In ordinary arithmetic, −0 = +0 = 0. However, in computing, some number representations allow for the existence of two zeros, often denoted by −0 (negative zero) and +0 (positive zero). This occurs in some signed number representat...
Rotating and spacing axis labels in ggplot2
...e a plot where the x-axis is a factor whose labels are long. While probably not an ideal visualization, for now I'd like to simply rotate these labels to be vertical. I've figured this part out with the code below, but as you can see, the labels aren't totally visible.
...
Convert base-2 binary number string to int
I'd simply like to convert a base-2 binary number string into an int, something like this:
8 Answers
...
How to detect shake event with android?
...
From the code point of view, you need to implement the SensorListener:
public class ShakeActivity extends Activity implements SensorListener
You will need to acquire a SensorManager:
sensorMgr = (SensorManager) getSystemService(SENSOR_SERVICE);
And...
Getting LaTeX into R Plots
I would like to add LaTeX typesetting to elements of plots in R (e.g: the title, axis labels, annotations, etc.) using either the combination of base/lattice or with ggplot2 .
...