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Centering a background image, using CSS

... You could make a screenshot and upload it to your server or a free pic hosting site like photobucket.com, or make a temporary example at www.jsfiddle.net and post a link for us. From what you've said, the image is 1600x1200 and most screen resolutions don't go that high, try resizing yo...
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How can I get a precise time, for example in milliseconds in Objective-C?

...lude <mach/mach_time.h> @implementation LBClock { mach_timebase_info_data_t _clock_timebase; } + (instancetype)sharedClock { static LBClock *g; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ g = [LBClock new]; }); return g; } - (id)init { ...
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How to convert vector to array

... @guneykayim The vector owns that memory, you shouldn't free it – Michael Mrozek May 30 '14 at 14:35 24 ...
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How do I fix "The expression of type List needs unchecked conversion…'?

... Since getEntries returns a raw List, it could hold anything. The warning-free approach is to create a new List<SyndEntry>, then cast each element of the sf.getEntries() result to SyndEntry before adding it to your new list. Collections.checkedList does not do this checking for you—although...
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Can I safely delete contents of Xcode Derived data folder?

...ata 9.4G /Users/horace/Library/Developer/Xcode/iOS DeviceSupport Feel free to remove stuff in the folders: rm -rf ~/Library/Developer/Xcode/DerivedData/* and some in: open ~/Library/Developer/Xcode/iOS\ DeviceSupport/ ...
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More than 10 lines in a node.js stack error?

... Omg this was driving me crazy. Thanks for this info! – Kris Oye Jan 24 '18 at 10:25  |  show 1 more comment ...
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FFmpeg on Android

... Hey, I would like to thank you very much for that info, you really helped me very much, Is it possible for you to help me if I will need some later on? Thank you! – idish Jul 1 '12 at 8:14 ...
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Can you delete multiple branches in one command with Git?

...(refname:short)" refs/heads/3.2\* | xargs git branch -D ... or the xargs-free: git branch -D `git for-each-ref --format="%(refname:short)" refs/heads/3.2\*` share | improve this answer ...
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What happened to “HelveticaNeue-Italic” on iOS 7.0.3

... it is not deployable to iOS 6 (because CTFontRef and UIFont were not toll-free bridged on iOS 6). However, on iOS 6 you can just use your regular font lookup code. share | improve this answer ...
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How to write a Ruby switch statement (case…when) with regex and backreferences?

...1}" else print "something else" end You can also use the $LAST_MATCH_INFO pseudo variable to get at the whole MatchData object. This can be useful when using named captures: case foo when /^(?<number>[0-9][0-9])/ print "the month is #{$LAST_MATCH_INFO['number']}" else print "som...