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UITableViewHeaderFooterView: Unable to change background color

...nge the background color of UITableViewHeaderFooterView. Although the view is appearing, the background color remains the default color. I'm getting a log from xcode saying: ...
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Can I install Python windows packages into virtualenvs?

Virtualenv is great: it lets me keep a number of distinct Python installations so that different projects' dependencies aren't all thrown together into a common pile. ...
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Merge / convert multiple PDF files into one PDF

... Considering that pdfunite is part of poppler it has a higher chance to be installed, usage is also simpler than pdftk: pdfunite in-1.pdf in-2.pdf in-n.pdf out.pdf share ...
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can you host a private repository for your organization to use with npm?

... a great platform to use within an organization, curious if a private repo is possible, like with Nexus/Maven. Nothing comes up on Google :( ...
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IN vs OR in the SQL WHERE Clause

...According to the manual for MySQL if the values are constant IN sorts the list and then uses a binary search. I would imagine that OR evaluates them one by one in no particular order. So IN is faster in some circumstances. The best way to know is to profile both on your database with your specific...
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String difference in Bash

...rmine the difference between two strings in my script. I could easily do this with diff or comm, but I'm not dealing with files and I'd prefer not to output them to files, do the compare and read it back. ...
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CSS content generation before or after 'input' elements [duplicate]

...ent. E.g. if you write <input type="text">Test</input> (which is wrong) the browser will correct this and put the text after the input element. The only thing you could do is to wrap every input element in a span or div and apply the CSS on these. See the examples in the specification...
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Can I set subject/content of email using mailto:?

Is it possible to set the subject/content of email when I use mailto:? 13 Answers 13 ...
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html onchange event not working

I am trying to do some experiment. What I want to happen is that everytime the user types in something in the textbox, it will be displayed in a dialog box. I used the onchange event property to make it happen but it doesn't work. I still need to press the submit button to make it work. I read abo...
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What is the meaning of id?

... id is a pointer to any type, but unlike void * it always points to an Objective-C object. For example, you can add anything of type id to an NSArray, but those objects must respond to retain and release. The compiler is totally...