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What does Serializable mean?

...* */ private static final long serialVersionUID = 1L; public String firstName; public String lastName; public int age; public String address; public void play() { System.out.println(String.format( "If I win, send me the trophy to this address: %...
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Check if a path represents a file or a folder

I need a valid method to check if a String represents a path for file or a directory. What are valid directory names in Android? As it comes out, folder names can contain '.' chars, so how does system understand whether there's a file or a folder? ...
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C# 4.0 optional out/ref arguments

...ters, and which just calls your current method. public bool SomeMethod(out string input) { ... } // new overload public bool SomeMethod() { string temp; return SomeMethod(out temp); } If you have C# 7.0, you can simplify: // new overload public bool SomeMethod() { return SomeMetho...
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Javascript add leading zeroes to date

... Try this: http://jsfiddle.net/xA5B7/ var MyDate = new Date(); var MyDateString; MyDate.setDate(MyDate.getDate() + 20); MyDateString = ('0' + MyDate.getDate()).slice(-2) + '/' + ('0' + (MyDate.getMonth()+1)).slice(-2) + '/' + MyDate.getFullYear(); EDIT: To explain,...
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Rails - Nested includes on Active Records?

... I think you mean as_json -- otherwise this renders the JSON string. – Meekohi Apr 5 '17 at 15:48 add a comment  |  ...
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MySQL search and replace some text in a field

...REPLACE(field, 'foo', 'bar') WHERE INSTR(field, 'foo') > 0; REPLACE (string functions) INSTR (string functions) share | improve this answer | follow | ...
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UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1

I'm having a few issues trying to encode a string to UTF-8. I've tried numerous things, including using string.encode('utf-8') and unicode(string) , but I get the error: ...
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php is null or empty?

...ote the ===. When use ==, as you did, PHP treats NULL, false, 0, the empty string, and empty arrays as equal. share | improve this answer | follow | ...
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Content Security Policy “data” not working for base64 Images in Chrome 28

...z'/></svg> get a utf8 to base64 convertor and convert the "svg" string to: PHN2ZyB4bWxucz0naHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmcnIHZpZXdCb3g9JzAgMCA0IDUn PjxwYXRoIGZpbGw9JyMzNDNhNDAnIGQ9J00yIDBMMCAyaDR6bTAgNUwwIDNoNHonLz48L3N2Zz4= and the CSP is img-src data: image/svg+xml;base64,PHN2Z...
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Convert SVG to PNG in Python

...rt an svg to png , in Python? I am storing the svg in an instance of StringIO . Should I use the pyCairo library? How do I write that code? ...