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Python try…except comma vs 'as' in except

... The definitive document is PEP-3110: Catching Exceptions Summary: In Python 3.x, using as is required to assign an exception to a variable. In Python 2.6+, use the as syntax, since it is far less ambiguous and forward compatible with Python 3.x. In Pytho...
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How to find Array length inside the Handlebar templates?

... 187 My Bad.... {{array.length}} actually worked inside the template. Should have checked/tested i...
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Trouble comparing time with RSpec

I am using Ruby on Rails 4 and the rspec-rails gem 2.14. For a my object I would like to compare the current time with the updated_at object attribute after a controller action run, but I am in trouble since the spec does not pass. That is, given the following is the spec code: ...
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Difference between variable declaration syntaxes in Javascript (including global variables)?

...l terms they're not usually big ones. There's a fourth way, and as of ES2015 (ES6) there's two more. I've added the fourth way at the end, but inserted the ES2015 ways after #1 (you'll see why), so we have: var a = 0; // 1 let a = 0; // 1.1 (new with ES2015) const a = 0; // 1.2 (new with...
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Difference between Python's Generators and Iterators

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Programmatically register a broadcast receiver

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ADB No Devices Found

I am attempting to install an Android app on my brand new Nexus 10 . I have a .apk file. I have downloaded the Android SDK, installed "Android SDK Tools", "Android SDK Platform-tools", and Google USB Driver. I have checked the setting on my Nexus 10 for "Unknown Sources". ...
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Pure JavaScript Send POST Data Without a Form

... 154 You can send it and insert the data to the body: var xhr = new XMLHttpRequest(); xhr.open("PO...
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Is right click a Javascript event?

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How to redirect a url in NGINX

... #listen *:80 | *:8000; server_name test.com; return 301 $scheme://www.test.com$request_uri; } And edit your main server block server_name variable as following: server_name www.test.com; Important: New server block is the right way to do this, if is evil. You must use loca...