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Use of “instanceof” in Java [duplicate]

... if( param instanceof Comparable) { //subclasses of Number like Double etc. implement Comparable //other subclasses might not -> you could pass Number instances that don't implement that interface System.out.println("param is comparable"); } } Note that if you have to use that op...
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What is the use of interface constants?

...ce constants in an appropriately named private interface nested in a class file are also good practice to group all your private constants rather than scatter them all over the file. share | improve...
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Javascript set img src

...wait, interval fires: set src on image1. in image1.onload, show 1, hide 2- etc. etc... – Breton Feb 9 '13 at 9:16 add a comment  |  ...
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CSS Child vs Descendant selectors

...in Internet Explorer 6. (If you use the selector in a jQuery/Prototype/YUI etc selector rather than in a style sheet it still works though) share | improve this answer | foll...
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Visual Studio support for new C / C++ standards?

...ramming environment. Portability of code across Windows-Linux-Solaris-AIX-etc is usually important in my experience, and that is not at all supported by MS tools, unfortunately. share | improve thi...
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MVC DateTime binding with incorrect date format

...} To keep with the way that routes etc are regiseterd in the Global ASAX file I also added a new sytatic class to the App_Start folder of my MVC4 project named CustomModelBinderConfig: using System; using System.Web.Mvc; namespace YourNamespaceHere { public static class CustomModelBindersCon...
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How to set environment variables in Python?

... can use those variables for future solutions, as an alternative to config files. However, the method described in the code below did not help me at all. import os os.environ["variable_1"] = "value_1" os.environ["variable_2"] = "value_2" # To Verify above code os.environ.get("variable_1") os.envir...
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Change the mouse cursor on mouse over to anchor-like style

...ly add "cursor: pointer" to the CSS rule for that class in your page's CSS file – attack Aug 25 '11 at 4:32 ...
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Using Django time/date widgets in custom form

...r template, include {{ form.media }} to output the links to the Javascript files. And the hacky part: the admin date/time widgets presume that the i18n JS stuff has been loaded, and also require core.js, but don't provide either one automatically. So in your template above {{ form.media }} you'll n...
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How to prevent long words from breaking my div?

... Firefox (using XBL) */ } In the case of Mozilla-based browsers, the XBL file mentioned above contains: <?xml version="1.0" encoding="utf-8"?> <bindings xmlns="http://www.mozilla.org/xbl" xmlns:html="http://www.w3.org/1999/xhtml"> <!-- More information on XBL: http...