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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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How do I create a file AND any folders, if the folders don't exist?

... And don't forget about Path.GetDirectoryName(string path) to get the directory from your full path – Oliver Jul 8 '10 at 8:21 ...
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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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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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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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Ensuring json keys are lowercase in .NET

...wercaseContractResolver : DefaultContractResolver { protected override string ResolvePropertyName(string propertyName) { return propertyName.ToLower(); } } Usage: var settings = new JsonSerializerSettings(); settings.ContractResolver = new LowercaseContractResolver(); var json...
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Get pandas.read_csv to read empty values as empty string instead of nan

...das library to read in some CSV data. In my data, certain columns contain strings. The string "nan" is a possible value, as is an empty string. I managed to get pandas to read "nan" as a string, but I can't figure out how to get it not to read an empty value as NaN. Here's sample data and outp...
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Get all column names of a DataTable into string array using (LINQ/Predicate)

... Try this (LINQ method syntax): string[] columnNames = dt.Columns.Cast<DataColumn>() .Select(x => x.ColumnName) .ToArray(); or in LINQ Query syntax: string[] columnNames = (fr...
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How to remove time portion of date in C# in DateTime object only?

...bly have the date in following format in object form not in the form of string . 38 Answers ...
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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 | ...