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Selectors in Objective-C?

First, I'm not sure I really understand what a selector is. From my understanding, it's the name of a method, and you can assign it to a class of type 'SEL' and then run methods such as respondToSelector to see if the receiver implements that method. Can someone offer up a better explanation? ...
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WordPress is giving me 404 page not found for all pages except the homepage

...link structure, which I could swear I did not touch. The permalink setting is on "month and name." 22 Answers ...
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Override body style for content in an iframe

...an iframe ? Note, the embedded body element has a class, and the iframe is of a page that is part of my site. 10 Answer...
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UITableViewCell subview disappears when cell is selected

... UITableViewCell changes the background color of all sub views when cell is selected or highlighted ,You can Solve this problem by overriding Tableview cell's setSelected:animated and setHighlighted:animated and resetting view background color. In Objective C : - (void)setSelected:(BOOL)selected...
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How to plot two histograms together in R?

... carrots and cucumbers. Each data frame has a single numeric column which lists the length of all measured carrots (total: 100k carrots) and cucumbers (total: 50k cucumbers). ...
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What is the difference between printf() and puts() in C?

... puts is simpler than printf but be aware that the former automatically appends a newline. If that's not what you want, you can fputs your string to stdout or use printf. ...
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Warning :-Presenting view controllers on detached view controllers is discouraged

...completion:nil]; And then in your modal view controller, when everything is finished, you can just call : [self dismissViewControllerAnimated:YES completion:nil]; share | improve this answer ...
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Django: “projects” vs “apps”

...jango. I'm going to avoid using the terms "project" and "application" in this context, because I'm not clear on their specific meaning in Django. ...
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Parse large JSON file in Nodejs

...eading of the file and the code that acts upon that input. You can accomplish this by buffering your input until you hit a newline. Assuming we have one JSON object per line (basically, format B): var stream = fs.createReadStream(filePath, {flags: 'r', encoding: 'utf-8'}); var buf = ''; stream.o...
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Flushing footer to bottom of the page, twitter bootstrap

...min-height: 100%; } #main { overflow:auto; padding-bottom:150px; /* this needs to be bigger than footer height*/ } .footer { position: relative; margin-top: -150px; /* negative value of footer height */ height: 150px; clear:both; padding-top:20px; } ...