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What's the difference between array_merge and array + array?

...rged); This outputs: plus sign merge array(4) { ["a"]=> string(3) "one" ["b"]=> string(3) "two" ["c"]=> string(5) "three" [3]=> string(12) "number three" } array_merge function merge array(4) { ["a"]=> string(6) "fourth" [...
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In Java, what is the best way to determine the size of an object?

...te static Instrumentation instrumentation; public static void premain(String args, Instrumentation inst) { instrumentation = inst; } public static long getObjectSize(Object o) { return instrumentation.getObjectSize(o); } } Add the following to your MANIFEST.MF: P...
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How can I calculate the difference between two dates?

... NSDate *date1 = [NSDate dateWithString:@"2010-01-01 00:00:00 +0000"]; NSDate *date2 = [NSDate dateWithString:@"2010-02-03 00:00:00 +0000"]; NSTimeInterval secondsBetween = [date2 timeIntervalSinceDate:date1]; int numberOfDays = secondsBetween / 86400; NS...
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How to display all methods of an object?

...as the following properties: • Built-in objects such as Math, String, Date, parseInt, etc. These have attributes { DontEnum }. • Additional host defined properties. This may include a property whose value is the global object itself; for example, in the HTML document obj...
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Why is Everyone Choosing JSON Over XML for jQuery? [closed]

...rn simplejson.dumps(conditions) # Encode and dump `conditions` as a JSON string When translated through JSON (using a library like 'simplejson' for Python), the resulting JSON structure looks nearly identical (except in JSON, booleans are lower-cased). Decoding that structure only requires a JS...
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How do I write JSON data to a file?

...on.dump writes to a file or file-like object, whereas json.dumps returns a string. – phihag Aug 13 '15 at 20:58 27 ...
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How to bind a List to a ComboBox?

...ng (if so, look at using a BindingList) public class Country { public string Name { get; set; } public IList<City> Cities { get; set; } public Country(string _name) { Cities = new List<City>(); Name = _name; } } List<Country> countries = new...
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ruby 1.9: invalid byte sequence in UTF-8

... In Ruby 1.9.3 it is possible to use String.encode to "ignore" the invalid UTF-8 sequences. Here is a snippet that will work both in 1.8 (iconv) and 1.9 (String#encode) : require 'iconv' unless String.method_defined?(:encode) if String.method_defined?(:encode) ...
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Git mergetool generates unwanted .orig files

...ution a *.orig file is created. Is there a way for it to not create that extra file? 10 Answers ...
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MySQL string replace

...w'); -> 'WwWwWw.mysql.com' http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace Note that it's easier if you make that an alias when using SELECT SELECT REPLACE(string_column, 'search', 'replace') as url.... ...