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Connect Java to a MySQL database

... It's good practice to close() things explicitly, though it is more code. Any good implementation would have to close the resources when the connection closes, yes. Consider other contexts where you want to reuse a statement or connection though. In Java 7's try-with-resources, you get t...
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Sorting an array of objects by property values

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The difference between sys.stdout.write and print?

...a small difference between the print function and the print statement (and more generally between a function and a statement). In case of an error when evaluating arguments: print "something", 1/0, "other" #prints only something because 1/0 raise an Exception print("something", 1/0, "other") #doe...
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How can I combine two HashMap objects containing the same types?

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How do I create a variable number of variables?

...something like var1 = 'foo' var2 = 'bar' var3 = 'baz' ... a list may be more appropriate than a dict. A list represents an ordered sequence of objects, with integer indices: lst = ['foo', 'bar', 'baz'] print(lst[1]) # prints bar, because indices start at 0 lst.append('potatoes') # lst...
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findViewById in Fragment

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Setting Authorization Header of HttpClient

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How to copy Docker images from one host to another without using a repository

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When is localStorage cleared?

...nd of complex data It’s difficult for cookies to keep track of two or more transactions on the same site, which might be happening in two or more different tabs Cookies can be exploited using techniques such as cross site scripting, resulting in security breaches Other (less p...
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What is object slicing?

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