小编wil*_*007的帖子

double[][] ServicePoint = new double[10][9]; // <-- gives an error (1)
double[,] ServicePoint = new double[10,9]; // <-- ok (2)

他们的区别是什么？(1)产生错误,是什么原因？

和

double d = new double[9]
ServicePoint[0] = d;

使用(2)将提示错误.为什么？

对于情节

sns.countplot(x="HostRamSize",data=df)

我将下面的图表与x轴标签混合在一起,我该如何避免这种情况？我应该更改图表的大小来解决这个问题吗？

我在PyCharm 3.4.1中运行以下代码,它突出%matplotlib inline显示语法错误,我删除第一行,并运行,我希望它会提示我一些图表,但它正常运行Process finished with exit code 0,并没有显示图表.

我的问题是:1.%matplotlib inline 用途是什么; 2.如何让pycharm显示matplotlib图表？

%matplotlib inline
from IPython.core.pylabtools import figsize
import numpy as np
from matplotlib import pyplot as plt
figsize(11, 9)

import scipy.stats as stats

dist = stats.beta
n_trials = [0, 1, 2, 3, 4, 5, 8, 15, 50, 500]
data = stats.bernoulli.rvs(0.5, size=n_trials[-1])
x = np.linspace(0, 1, 100)

# For the already prepared, I'm using Binomial's conj. prior.
for k, N in enumerate(n_trials):
    sx = …

当我跑

!pip install imgaug==0.4.0

以下是输出

Collecting imgaug==0.4.0
  Using cached https://files.pythonhosted.org/packages/66/b1/af3142c4a85cba6da9f4ebb5ff4e21e2616309552caca5e8acefe9840622/imgaug-0.4.0-py2.py3-none-any.whl
Requirement already satisfied: Pillow in /opt/conda/envs/Python-3.6/lib/python3.6/site-packages (from imgaug==0.4.0) (5.4.1)
Requirement already satisfied: numpy>=1.15 in /opt/conda/envs/Python-3.6/lib/python3.6/site-packages (from imgaug==0.4.0) (1.15.4)
Collecting Shapely (from imgaug==0.4.0)
  Using cached https://files.pythonhosted.org/packages/9d/18/557d4f55453fe00f59807b111cc7b39ce53594e13ada88e16738fb4ff7fb/Shapely-1.7.1-cp36-cp36m-manylinux1_x86_64.whl
Requirement already satisfied: six in /opt/conda/envs/Python-3.6/lib/python3.6/site-packages (from imgaug==0.4.0) (1.12.0)
Requirement already satisfied: matplotlib in /opt/conda/envs/Python-3.6/lib/python3.6/site-packages (from imgaug==0.4.0) (3.0.2)
Collecting scikit-image>=0.14.2 (from imgaug==0.4.0)
  Using cached https://files.pythonhosted.org/packages/0e/ba/53e1bfbdfd0f94514d71502e3acea494a8b4b57c457adbc333ef386485da/scikit_image-0.17.2-cp36-cp36m-manylinux1_x86_64.whl
Requirement already satisfied: imageio in /opt/conda/envs/Python-3.6/lib/python3.6/site-packages (from imgaug==0.4.0) (2.4.1)
Collecting opencv-python (from imgaug==0.4.0)
  Using cached https://files.pythonhosted.org/packages/77/f5/49f034f8d109efcf9b7e98fbc051878b83b2f02a1c73f92bbd37f317288e/opencv-python-4.4.0.42.tar.gz
  Installing build dependencies ... …

我应该如何从node.js中的typescript读取和写入文本文件？我不确定是否会在node.js中读取/写入一个沙箱文件,如果没有,我相信应该有一种方法来访问文件系统.

我打开NetBeans时收到以下消息.我安装了JDK,并在环境中设置bin目录.我接下来要做什么来避免这个问题？顺便说一下,我使用的是Windows 7 64位.

我们使用这两种方法根据列内容和标题resp调整列长度.

ListView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.ColumnContent); ListView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.HeaderSize);

但是如何根据两者进行调整？即调整为标题和列内容的最长长度.

我已经看到了一种语法,其中一个函数放在括号内,这些函数跟随一个美元符号,如下所示:

$(function(){...});

这在jQuery中意味着什么？这个功能有什么作用？

我希望有一个使用整数数组作为键的字典,如果整数数组具有相同的值(甚至是不同的对象实例),它们将被视为相同的键.我该怎么办？

以下代码b不同,因为不同的对象实例.

 int[] a = new int[] { 1, 2, 3 };
 int[] b = new int[] { 1, 2, 3 };
 Dictionary<int[], string> dic = new Dictionary<int[], string>();
 dic.Add(a, "haha");
 string output = dic[b];

我想使用Nuget为Node.js项目下载VS 2015的软件包,但它是灰色的,如下所示:

怎么解决？