现在需要生成一个N个D维的数据,没在一组数据都有一个类标,这个类标根据第一维的正负来进行标识样本数据的类标:Positive and Negative。
#!/usr/bin/python
import re
import sys
import random
import os
filename = "input.txt"
if(os.path.exists(filename)):
print("%s exists and del" % filename)
os.remove(filename)
fout = open(filename,"w")
for i in range( 0,int(sys.argv[1]) ): #str to int
x = []
for j in range(0,int(sys.argv[2])):
x.append( "%4f" % random.uniform(-1,1) ) #generate random data and limit the digits into 4
fout.write("%s\t" % x[j])
#fout.write(x) : TypeError:expected a character buffer object
if(x[0][0] == '-'):
fout.write(" Negative"+"\n")
else:
fout.write(" Positive"+"\n")
fout.close()
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference
出现以上异常.然后就在baidu上
cmd命令打jar是如下实现:
在运行里输入cmd,利用cmd命令进入到本地的工作盘符。(如我的是D盘下的文件有此路径 D:\workspace\prpall\WEB-INF\classes)
现在是想把D:\workspace\prpall\WEB-INF\classes路径下所有的文件打包成prpall.jar。然后继续如下操作:
cd D: 回车
cd workspace/prpal
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml&q
Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area.
public class Solution {
public int maximalRectangle(char[][] matrix)
随着RESTful Web Service的流行,测试对外的Service是否满足期望也变的必要的。从Spring 3.2开始Spring了Spring Web测试框架,如果版本低于3.2,请使用spring-test-mvc项目(合并到spring3.2中了)。
Spring MVC测试框架提供了对服务器端和客户端(基于RestTemplate的客户端)提供了支持。
&nbs
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
/*you'll also need to set UIViewControllerBasedStatusBarAppearance to NO in the plist file if you use this method
英文资料:
Thread Dump and Concurrency Locks
Thread dumps are very useful for diagnosing synchronization related problems such as deadlocks on object monitors. Ctrl-\ on Solaris/Linux or Ctrl-B