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How to prevent multiple instances of an Activity when it is launched with different Intents

... using the "Open" button on the Google Play Store app (previously called Android Market). It seems that launching it from the Play Store uses a different Intent than launching it from the phone's application menu of icons. This is leading to multiple copies of the same Activity being launched, w...
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Difference between .tagName and .nodeName

What is the difference between $('this')[0].nodeName and $('this')[0].tagName ? 4 Answers ...
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How to check if a variable exists in a FreeMarker template?

...: [#if userName??] Hi ${userName}, How are you? [/#if] Or with the standard freemarker syntax: <#if userName??> Hi ${userName}, How are you? </#if> To check if the value exists and is not empty: <#if userName?has_content> Hi ${userName}, How are you? </#if> ...
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How to retrieve a user environment variable in CMake (Windows)

...Name="Hello World" cmake .. env [--unset=NAME]... [NAME=VALUE]... COMMAND [ARG]... Run command in a modified environment. Just be aware that this may only work the first time. If CMake re-configures with one of the consecutive builds (you just call e.g. make, one CMakeLists.txt was cha...
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Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?

...t doesn't work is because %@ signifies an object. A CGPoint is a C struct (and so are CGRects and CGSizes). share | improve this answer | follow | ...
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Tools for Generating Mock Data? [closed]

...a set (unlimited size) it supports various input (CSV, Flat Files, DBUnit) and output format (CSV, Flat Files, DBUnit, XML, Excel, Scripts) it can be used on the command line or through a maven plugin it's open source and customizable I would give it a try. BTW, a list of similar products is avai...
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Difference between classification and clustering in data mining? [closed]

Can someone explain what the difference is between classification and clustering in data mining? 21 Answers ...
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How to identify whether a file is normal file or directory

... os.path.isdir() and os.path.isfile() should give you what you want. See: http://docs.python.org/library/os.path.html share | improve this...
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Java JUnit: The method X is ambiguous for type Y

I had some tests working fine. Then, I moved it to a different package, and am now getting errors. Here is the code: 3 Answ...
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How do I switch between the header and implementation file in Xcode 4?

How do I switch between the header and implementation file in Xcode 4? 7 Answers 7 ...