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Test if something is not undefined in JavaScript

... response[0] is not defined, check if it is defined and then check for its property title. if(typeof response[0] !== 'undefined' && typeof response[0].title !== 'undefined'){ //Do something } ...
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IIS - 401.3 - Unauthorized

...created a new site on IIS Manager, mapped it to a folder on my file system and added index.html to the folder. I have set the port to 85 for this site. When I try to access http://localhost:85/index.html , I get the following error message: ...
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Create Directory When Writing To File In Node.js

I've been tinkering with Node.js and found a little problem. I've got a script which resides in a directory called data . I want the script to write some data to a file in a subdirectory within the data subdirectory. However I am getting the following error: ...
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How to check an Android device is HDPI screen or MDPI screen?

... Density values described at: developer.android.com/guide/practices/screens_support.html – esilver Jan 21 '14 at 21:52 1 ...
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VS2013 permanent CPU usage even though in idle mode

I've recently updated VS2013 to Update 1 and since then VS takes CPU usage to 25% (on a 4 cores intel i5 cpu) permanently even though it's supposed to be idle. I thought it has some unfinished background processes so I left it running for a while but it keeps using the cpu when it's supposed to be i...
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Google Maps API v3: Can I setZoom after fitBounds?

...he addListenerOnce method... that way, you don't have to save the listener and manually remove it, as the method will take care of that for you. – Matt Diamond Jan 16 '11 at 20:43 ...
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Git Bash doesn't see my PATH

... wasn't able to run the file though, since apparently bash couldn't understand its contents) One more reason to switch to posh-git.. Thanks @Tom for pointing me to the right direction. share | imp...
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Install tkinter for Python

...ebian-derived distributions like for Ubuntu; refer to your package manager and package list on other distributions.) share | improve this answer | follow | ...
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How to include “zero” / “0” results in COUNT aggregate?

... You want an outer join for this (and you need to use person as the "driving" table) SELECT person.person_id, COUNT(appointment.person_id) AS "number_of_appointments" FROM person LEFT JOIN appointment ON person.person_id = appointment.person_id GROUP BY p...
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What is `related_name` used for in Django?

What is the related_name argument useful for on ManyToManyField and ForeignKey fields? For example, given the following code, what is the effect of related_name='maps' ? ...