我有一些if语句,如:
def is_valid(self):
if (self.expires is None or datetime.now() < self.expires)
and (self.remains is None or self.remains > 0):
return True
return False
当我输入这个表达式时,我的Vim会自动移动and到新行,并使用与行相同的缩进if.我尝试更多缩进组合,但验证总是说这是无效的语法.如何构建多长的if？
我找到了一些专门用于在VirtualMachine中进行调试的com.sun.jdi类,但我不能使用它,因为Sun JDK7中似乎不存在包.
如何使用这个包？
BTW.lib/sa-jdi.jar是不是我想要的
我正在使用com.sun.tools.attachjdk tools.jar,它需要一个指定的java.library.pathenv指向attach.dll启动时正确实例化提供程序,如WindowsAttachProvider.出于某些原因,我需要动态加载捆绑的一个attach.dll.我试着用这样的东西:
public static void main(String[] args) throws Exception {
Path bin = Paths.get(System.getProperty("user.dir"),"bin").toAbsolutePath();
switch (System.getProperty("os.arch")) {
case "amd64":
bin = bin.resolve("win64");
break;
default:
bin = bin.resolve("win32");
}
// Dynamic setting of java.library.path only seems not sufficient
System.setProperty("java.library.path", System.getProperty("java.library.path") + File.pathSeparator + bin.toString());
// So I try to manual loading attach.dll. This is not sufficient too.
System.load(bin.resolve("attach.dll").toString());
// I'm using com.sun.tools.attach in my app
new myApp();
}
如果我用jdk(在normall jre中)运行它,它会向我报告: …
我写了以下EJB:
@Singleton
@LocalBean
@Startup
public class Starter {
private static final Logger logger = Logger.getLogger("lab");
@PostConstruct
public void init() throws Exception {
for (final Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
final NetworkInterface iface = en.nextElement();
if (iface.isUp()) {
logger.info(iface);
}
}
}
}
在部署时,此日志如下:
name:lo (Software Loopback Interface 1)
name:net0 (WAN Miniport (SSTP))
name:net1 (WAN Miniport (L2TP))
name:net2 (WAN Miniport (PPTP))
name:ppp0 (WAN Miniport (PPPOE))
name:eth0 (WAN Miniport (IPv6))
name:eth1 (WAN Miniport (Network Monitor))
name:eth2 (WAN Miniport (IP))
name:net5 …如何使用此插件开发一个工作示例:HTML5 JavaScript在Chrome中粘贴图像数据
作者提出了一个很好的例子,看起来它符合我们的目的.我不熟悉创建一个jQuery插件.
目标是使用此插件将剪贴板图像粘贴到富文本编辑器(如TinyMCE)中.
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>PASTE IMAGE</title>
<script type="text/javascript" src="js/jquery-1.7.1.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-1.8.18.custom.min.js"></script>
<script type="text/javascript">
// Created by STRd6
// MIT License
// jquery.paste_image_reader.js
(function($) {
var defaults;
$.event.fix = (function(originalFix) {
return function(event) {
event = originalFix.apply(this, arguments);
if (event.type.indexOf('copy') === 0 || event.type.indexOf('paste') === 0) {
event.clipboardData = event.originalEvent.clipboardData;
}
return event;
};
})($.event.fix);
defaults = {
callback: $.noop,
matchType: /image.*/
};
$.fn.pasteImageReader = function(options) {
if (typeof options === "function") { …我有一些与各种hrefs的链接,并希望得到这个值的确定网址,如:
http://localhost/ -> http://localhost/
localhost -> http://mysite.example/localhost
firstpage -> http://mysite.example/firstpage
/anotherpage -> http://mysite.example/anotherpage
#anchor1 -> http://mysite.example/currentpage#anchor1
/#anchor2 -> http://mysite.example/#anchor2
顺便说一下,我不想要点击处理代码.我能做到.
java ×3
jquery ×2
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