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Can I set an opacity only to the background image of a div?

... Nope, this cannot be done since opacity affects the whole element including its content and there's no way to alter this behavior. You can work around this with the two following methods. Secondary div Add another div element...
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How Do You Clear The IRB Console?

... share | improve this answer | follow | edited Mar 25 '13 at 14:07 ...
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String literals: Where do they go?

... A common technique is for string literals to be put in "read-only-data" section which gets mapped into the process space as read-only (which is why you can't change it). It does vary by platform. For example, simpler chip architectures may not support read-only memory se...
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How does data binding work in AngularJS?

... AngularJS remembers the value and compares it to a previous value. This is basic dirty-checking. If there is a change in value, then it fires the change event. The $apply() method, which is what you call when you are transitioning from a non-AngularJS world int...
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Use Fieldset Legend with bootstrap

I'm using Bootstrap for my JSP page. 5 Answers 5 ...
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Sending email with PHP from an SMTP server

I have trouble sending email in PHP. I get an error: SMTP server response: 530 SMTP authentication is required . 8 Answers...
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How to preview git-pull without doing fetch?

Is it even possible? 8 Answers 8 ...
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Transferring files over SSH [closed]

I'm SSHing into a remote server on the command line, and trying to copy a directory onto my local machine with the scp command. However, the remote server returns this "usage" message: ...
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What is the Linux equivalent to DOS pause?

I have a Bash shell script in which I would like to pause execution until the user presses a key. In DOS, this is easily accomplished with the "pause" command. Is there a Linux equivalent I can use in my script? ...
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Total memory used by Python process?

Is there a way for a Python program to determine how much memory it's currently using? I've seen discussions about memory usage for a single object, but what I need is total memory usage for the process, so that I can determine when it's necessary to start discarding cached data. ...