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How to change value of process.env.PORT in node.js?
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For just one run (from the unix shell prompt):
$ PORT=1234 node app.js
More permanently:
$...
TypeError: Cannot read property 'then' of undefined
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2 Answers
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How can I get the URL of the current tab from a Google Chrome extension?
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Use chrome.tabs.query() like this:
chrome.tabs.query({active: true, lastFocusedWindow: true},...
CSS scrollbar style cross browser [duplicate]
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Till HelgeTill Helge
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How do I replace multiple spaces with a single space in C#?
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24 Answers
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ActiveRecord: List columns in table from console
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This will list the column_names from a table
Model.column_names
e.g. User.column_names
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Which way is best for creating an object in JavaScript? Is `var` necessary before an object property
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There is no best way, it depends on your use case.
Use way 1 if you want to create several sim...
How do I export UIImage array as a movie?
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Take a look at AVAssetWriter and the rest of the AVFoundation framework. The writer has an inp...
How to check if multiple array keys exists
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20 Answers
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ALTER TABLE to add a composite primary key
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ALTER TABLE provider ADD PRIMARY KEY(person,place,thing);
If a primary key already exists the...