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为什么要进行方法的封装? 在平时的生产环境中,我们经常写出这样的代码: function fAdd(iA,iB){ return iA+iB; } function fMul(iA,iB){ return iA-iB; } 其本质上是这样的: var fAdd = function(iA,iB){ return iA+iB; } var fMul = function(iA,iB){ return iA-iB; } 这样的话,我们就创建了两个全局变量,iA,iB.如果在大型的项目环境中,会有很多人对代码进行开发,很容易造成变量污染,从而引出很多问题.所以我们就要对方法进行封装. 封装方式1: 封装成对象 利用js中对象的特性来将我们的方法封装在对象中 var oFuncs = { 　　fAdd : function(iA,iB){ 　　return iA+iB; } fMul:function(iA,iB){ 　　return iA-iB; 　　} } 或者 var oFuncs = function(){}; 　　oFuncs.fAdd = function(iA,iB){ 　　return iA+iB; } oFuncs.fMul = function(iA,iB){ 　　return iA-iB; } 这样,我们就可以这样调用函数了 oFuncs.fAdd(3,4);

begin(a) 指向数组 a 的第一个元素， end(a) 指向数组 a 最后一个元素 之后的一个元素 #include <iostream> using namespace std; int main() { int ia[] = {0,1,2,3}; int *beg = begin(ia); int *last = end(ia); cout << *beg << endl; cout << *(last-1) << endl; return 0; } 0 3 [Finished in 0.7s] 来源： https://www.cnblogs.com/yaos/p/12094536.html

解决办法： 下载一个32位的tcnative-1.dll替换tomcat原先的即可。 0-Dec-2019 09:14:57.113 警告 [main] org.apache.catalina.core.AprLifecycleListener.init 基于APR的本地库加载失败. 错误报告为[D:\java\tomcat\apache-tomcat-9.0.27\bin\tcnative-1.dll: Can't load AMD 64-bit .dll on a IA 32-bit platform]java.lang.UnsatisfiedLinkError: D:\java\tomcat\apache-tomcat-9.0.27\bin\tcnative-1.dll: Can't load AMD 64-bit .dll on a IA 32-bit platformat java.lang.ClassLoader$NativeLibrary.load(Native Method) …………………………………… 下载地址： http://www.apache.org/dist/tomcat/tomcat-connectors/native/ (我下载的是tomcat-native-1.2.21-openssl-1.1.1a-win32-bin.zip，问题解决了！)

问题：删除某文件出现cannot remove 'XXX': Operation not permitted 查看问题： 1. lsattr 查看隐藏属性 [root@oldboy oldboy]# lsattr -------------e- ./data ----ia-------e- ./test.sh 确认文件无法删除的原因在与隐藏属性上有i 2. chattr 去除隐藏属性 [root@oldboy oldboy]# chattr -ia test.sh [root@oldboy oldboy]# lsattr -------------e- ./data -------------e- ./test.sh 3. 重新删除文件 来源： https://www.cnblogs.com/zoe233/p/11952979.html

【拓扑图】 【静态,指向对方】 指出 目标网段， 子网掩码， 下一跳路由 接入端口 路由1： Router>en Router#conf Configuring from terminal, memory, or network [terminal]? Enter configuration commands, one per line. End with CNTL/Z. Router(config)#int f0/0 Router(config-if)#ip address 192.168.1.254 255.255.255.0 Router(config-if)#no shut Router(config-if)# %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up Router(config-if)#exit Router(config)#int f0/1 Router(config-if)#ip address 192.168.3.254 255.255.255.0 Router(config-if)#no shut Router

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am finding that a lot of time spent in my matlab function is in this code: intersect(freq_bins, our_bins); Both can be rather large vectors, and are comprised of only integers. I just need to know which integers are in both. This is truly the primitive purpose of intersect(), so I suspect that the answer is: it doesn't get any better. But maybe someone has some suggestions. 回答1: intersect calls ismember . In your case, you don't need all the complicated checks that intersect does, so you can save some overhead and call ismember directly

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: When I create a new asp.net mvc 4.0 application, one of the first thing I do , is create and set a custom authorize global filter like so: //FilterConfig.cs public static void RegisterGlobalFilters(GlobalFilterCollection filters) { //filters.Add(new HandleErrorAttribute()); filters.Add(new CustomAuthorizationAttribute()); } Then I create the CustomAuthorizationAttribute like so: //CustomAuthorizationAttribute.cs protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext) { if (filterContext.HttpContext.Request

Gilles Castel写的vim中使用的代码片段，质量很高，原文：https://github.com/gillescastel 下载后，存放到 ~/.vim/plugged/ultisnips/UltiSnips 下面是记录一下，该代码片段： global !p texMathZones = ['texMathZone'+x for x in ['A', 'AS', 'B', 'BS', 'C', 'CS', 'D', 'DS', 'E', 'ES', 'F', 'FS', 'G', 'GS', 'H', 'HS', 'I', 'IS', 'J', 'JS', 'K', 'KS', 'L', 'LS', 'DS', 'V', 'W', 'X', 'Y', 'Z']] texIgnoreMathZones = ['texMathText'] texMathZoneIds = vim.eval('map('+str(texMathZones)+", 'hlID(v:val)')") texIgnoreMathZoneIds = vim.eval('map('+str(texIgnoreMathZones)+", 'hlID(v:val)')") ignore = texIgnoreMathZoneIds[0] def math(): synstackids = vim.eval(

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I tried to include in-app billing in my app and for the purpose of testing, based the whole procedure on the "TrivialDrive" example for version 3 of in-app billing (and implementing the unmodified versions of the IAB files as supplied in the "util" subdirectory of the demo), but it doesn't work for me - on LogCat, just before the app terminates with an error, it gives the message "In-app billing error: Illegal state for operation (launchPurchaseFlow): IAB Helper is not set up. " (right after the startRegistered() function has been fired and

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question already has an answer here: Line truncated, Syntax error in argument list 2 answers I have tried to write a code in fortran to calculate the coordination number. But a got these errors coord.f:43.72: read(13,*) ri(i), g(2,2,i), g(1,2,i), g(1,2,i), g(1, 1 Error: Expected array subscript at (1) coord.f:78.38: call integrate(npts-1,ri,gt,ans) 1 Warning: Rank mismatch in argument 'ans' at (1) (scalar and rank-2) coord.f:79.8: t1(ia,ib)=ans 1 Error: Incompatible ranks 0 and 2 in assignment at (1) coord.f:52.32: call coordination(ri