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How to check if an app is installed from a web-page on an iPhone?

...pp is installed or not. But you can try redirecting the phone to the app, and if nothing happens redirect the phone to a specified page, like this: setTimeout(function () { window.location = "https://itunes.apple.com/appdir"; }, 25); window.location = "appname://"; If the second line of code giv...
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Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?

...was removed from the official developer documentation . (See Why doesn't Android use more enums? for the old section content) ...
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RESTful Login Failure: Return 401 or Custom Response

...to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided. The response must include a WWW-Authenticate header field containing a challenge applicable to the requested resource. Your confusion about, myservice.com/are/these/credentials/v...
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Redirect non-www to www in .htaccess

... ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L] If you need to support http and https and preserve the protocol choice try the following: RewriteRule ^login\$ https://www.%{HTTP_HOST}/login [R=301,L] Where you replace login with checkout.php or whatever URL you need to support HTTPS on. I'd argue...
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Why is the clone() method protected in java.lang.Object?

...ails to serve this purpose ... This is a highly atypical use of interfaces and not one to be emulated ... In order for implementing the interface to have any effect on a class, it and all of its superclasses must obey a fairly complex, unenforceable and largely undocumented protocol" ...
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How to get a dependency tree for an artifact?

...ency plugin Create a simple project with pom.xml only. Add your dependency and run: mvn dependency:tree Unfortunately dependency mojo must use pom.xml or you get following error: Cannot execute mojo: tree. It requires a project with an existing pom.xml, but the build is not using one. 2) Find pom...
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“implements Runnable” vs “extends Thread” in Java

...purer" way to go. In practical terms, it means you can implement Runnable and extend from another class as well. share | improve this answer | follow | ...
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fatal error LNK1112: module machine type 'x64' conflicts with target machine type 'X86'

... I wrote a blog entry about this, as I encountered this maddening problem, and finally yanked my system back into working order. These are the things to check, in this order: Check your properties options in your linker settings at: Properties > Configuration Properties > Linker > Advanc...
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Can constructors be async?

...onstructor acts very similarly to a method returning the constructed type. And async method can't return just any type, it has to be either “fire and forget” void, or Task. If the constructor of type T actually returned Task<T>, that would be very confusing, I think. If the async constru...
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npm throws error without sudo

I just installed node and npm through the package on nodejs.org and whenever I try to search or install something with npm it throws the following error, unless I sudo the command. I have a feeling this is a permissions issue? I am already the admin. ...