原文:http://www.zhufengpeixun.cn/JavaScriptmianshiti/2014-04-01/287.html < script type = "text/javascript" > var x = 1; var y = 0; var z = 0; function add(n) { n = n + 1; } y = add(x); function add(n) { n = n + 3; } z = add(x); s = y + z; &l
Just a Hook Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 45600 Accepted Submission(s): 21730 Problem Description In the game of DotA, Pudge’s meat hook is actually the most horrible thing
python中有一种赋值机制即多元赋值,采用这种方式赋值时,等号两边的对象都是元组并且元组的小括号是可选的.通常形式为 x, y, z = 1, 2, 'a string' 等同于 (x, y, z) = (1, 2, 'a string') 这种赋值类型最经常用到的环境是变量交换,形如 x, y = y, x 这种交换方式无需中间变量即可交换两个变量的值.那么具体实现机制是怎样的呢? 运行时,首先构造一个元组(y, x),然后构造另一个元组(x, y),接着用元组(y, x)赋值给(x, y)
使用python的图形库. 环境:conda+jupyter notebook 代码如下: import numpy as np from PIL import Image from numba import jit MAXITERS = 200 RADIUS = 100 @jit def color(z, i): v = np.log2(i+1-np.log2(np.log2(abs(z))))/5 if v < 1.0: return v**4, v**2.5, v else: v = ma
1.y=y||’world’ function log(x,y){ y=y||’world’; console.log(x,y) } log(‘hello’)===>hello world log('hello','')==>hello world 2.y=y?y:'world' function log(x,y){ y=y?y:'world'; console.log(x,y) } log('hello’)==>hello world log('hello','')==&g
习惯使用perl4的开发者总是用^表示字符串开头锚位,用$表示字符串结尾锚位,比如\^https://\ 将会匹配所有以https://开头的字符串,同样,\.bmp$\将会匹配所有以.bmp结尾的字符串.但是到了perl5,有了\A ,\Z , \z三种锚位,这三种锚位中,\A与^相同,表示匹配以某模式开头的字符串,而\z就与$相同了…… 但是如果有了/m,则^表示行首而不再是字符串的串首!以字符串"this is a wilma line \nbarney is on another lin
此完整出错信息是在./configure阶段 Basic XLib functionality test failed! You might need to modify the include and library search paths by editing QMAKE_INCDIR_X11 and QMAKE_LIBDIR_X11 in /home/zhu/Qt/qt-x11-opensource-src-4.5.2/mkspecs/linux-g++ 还是老办法,以不变应万变.进co
Doing Homework Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3958 Accepted Submission(s): 1577 Problem Description Ignatius has just come back school from the 30th ACM/ICPC. Now he has a l
整出错信息是在./configure阶段Basic XLib functionality test failed!You might need to modify the include and library search paths by editingQMAKE_INCDIR_X11 and QMAKE_LIBDIR_X11 in /home/zhu/Qt/qt-x11-opensource-src-4.5.2/mkspecs/linux-g++ 还是老办法,以不变应万变.进入文件夹con