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Difference between null and empty (“”) Java String

... a method to execute if it was), but i never understood why it worked, but now i see what it was saying, i was checking for whether MediaPlayer had been instantiated or not, by using null... e.g if (mp==null){do something}. – Azurespot May 18 '14 at 3:05 ...
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How to clear jQuery validation error messages?

... First of all, thanks! Had this working great for years, but now I've discovered a performance issue: showErrors does some DOM manipulation and it is called for every element in the form. The browser froze for a couple of seconds when using this code on a form with ~ 30 controls. Th...
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Why is division in Ruby returning an integer instead of decimal value?

... I've built a prime number generator in Ruby in order to learn the syntax, now I'm optimizing it to learn what works best. Here's the benchmark I put together: require 'base64';require 'zlib';puts Zlib.inflate(Base64.decode64("eJxlkMEOwiAQRO98hekFuGzxQEwPXvwR01ZqiYHqBk2Tln8XDlWgnDbM25nJonq9NaoD7ZTtR...
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How to embed small icon in UILabel

... Already tried this yesterday. Seems like a missed something because now it works. Thanks. Just in case for everyone who's trying to accomplish the same (since it's slightly different): NSAttributedString *attachmentString = [NSAttributedString attributedStringWithAttachment:attachment]; NSMu...
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How Do I Convert an Integer to a String in Excel VBA?

... @MarkCh I know this is old, but... perhaps because VBA's obnoxious implicit conversions and default member calls are what makes so much VBA code frail, surprising and bug-prone? There wouldn't be half as many VBA questions on SO if it w...
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Where do I find the bashrc file on Mac?

...ALUE is /Users/ShajilShocker/Documents/Android/NDK/android-ndk-r10b ...so now I have to open the terminal and ` nano .bash_profile` and enter ANDROID_NDK_HOME="/Users/ShajilShocker/Documents/Android/NDK/android-ndk-r10b" am i correct ? or add the following line as well export PATH=$PATH:ANDROID_NDK...
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How can I detect if a file is binary (non-text) in python?

...ause the mimetypes module is not good for all files. I'm looking at a file now which system file reports as "UTF-8 Unicode text, with very long lines" but mimetypes.gest_type() will return (None, None). Also, Apache's mimetype list is a whitelist/subset. It is by no means a complete list of mimetyp...
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Vim 80 column layout concerns

...=darkred ctermfg=white guibg=#FFD9D9 match OverLength /\%>80v.\+/ And now VIM will highlight anything that exceeds column 80. share | improve this answer | follow ...
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Changing image sizes proportionally using CSS?

I have been trying for a couple of days now to configure my thumbnail gallery so all the images appear the same height and width. However when I change the Css code to, ...
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Selecting only first-level elements in jquery

....2. I've replaced it with 1.3 and these kind of selectors are working fine now. Thanks very much for your reply and everyone who replied. – aston Jun 10 '09 at 20:33 ...