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How to create a jQuery plugin with methods?

I'm trying to write a jQuery plugin that will provide additional functions/methods to the object that calls it. All the tutorials I read online (have been browsing for the past 2 hours) include, at the most, how to add options, but not additional functions. ...
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CSS background image alt attribute

This is one I have not had to tackle before. I need to use alt tags on all images in a site including those used by CSS background-image attribute. ...
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How to open a specific port such as 9090 in Google Compute Engine

I have 2 Google Compute Engine instances and I want to open port 9090 in both the instances. I think we need to add some firewall rules. ...
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Truncating floats in Python

I want to remove digits from a float to have a fixed number of digits after the dot, like: 29 Answers ...
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What does the “~” (tilde/squiggle/twiddle) CSS selector mean?

Searching for the ~ character isn't easy. I was looking over some CSS and found this 5 Answers ...
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Is there a timeout for idle PostgreSQL connections?

I see a lot of them. We are trying to fix our connection leak. But meanwhile, we want to set a timeout for these idle connections, maybe max to 5 minute. ...
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What is the purpose of willSet and didSet in Swift?

...nt seems to be that sometimes, you need a property that has automatic storage and some behavior, for instance to notify other objects that the property just changed. When all you have is get/set, you need another field to hold the value. With willSet and didSet, you can take action when the value is...
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Create new tmux session from inside a tmux session

I'm writing a shell script that creates / attaches or switches to a given session, depending on whether one is inside tmux and the session exists. ...
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How can I list ALL DNS records?

... When you query for ANY you will get a list of all records at that level but not below. # try this dig google.com any This may return A records, TXT records, NS records, MX records, etc if the domain name is exactly "google.com". However, it will not retu...
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Sass - Converting Hex to RGBa for background opacity

I have the following Sass mixin, which is a half complete modification of an RGBa example : 5 Answers ...