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Django set default form values

...riable and iterate through its contents without you needing to do anything extra). Personally, I prefer to specify default values in the form definition and only use the initial=... mechanism if the desired default is a dynamic value (e.g. something entered by a user, or based on their login, geogra...
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Should arrays be used in C++?

..." }, // ... }; This is often preferable to using a vector (and std::string), since it avoids all order of initialization issues; the data is pre-loaded, before any actual code can be executed. Finally, related to the above, the compiler can calculate the actual size of the array from the init...
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Changing Java Date one hour back

... database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes. Where to obtain the java.time classes? Java SE 8, Java SE 9, Java SE 10, Java SE 11, and later - Part of the standard Java API with a bundled implementation. Java 9 adds some mi...
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Check if two unordered lists are equal [duplicate]

...se' The difference is, the later will print True, if list2 contains some extra elements along with all the elements of list1. In simple words, it will ensure that all the elements of list1 should be present in list2, regardless of whether list2 has some extra elements or not. ...
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Setting an environment variable before a command in Bash is not working for the second command in a

... process (like the accepted answer) nor will it execute the commands in an extra subshell (like the other answer). As we get a few regular views, it's probably good to give an alternative to eval that will please everyone, and has all the benefits (and perhaps even more!) of this quick eval “tric...
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How to add spacing between UITableViewCell

...Controller, UITableViewDelegate, UITableViewDataSource { // These strings will be the data for the table view cells let animals: [String] = ["Horse", "Cow", "Camel", "Sheep", "Goat"] let cellReuseIdentifier = "cell" let cellSpacingHeight: CGFloat = 5 @IBOutlet var ...
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C++, variable declaration in 'if' expression

.... If you really need to restrict the scope of that variable you can put an extra block around the if block. I have never used this syntax. – Giorgio Oct 20 '11 at 15:53 2 ...
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Google Maps API 3 - Custom marker color for default (dot) marker

...ed symbols, you can craft any shape of any color by specifying an SVG path string (Spec). To use it, instead of setting the 'icon' marker option to the image url, you set it to a dictionary containing the symbol options. As example, I managed to craft one symbol that is quite similar to the standar...
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Starting python debugger automatically on error

...tically start pdb when an error is encountered? I am not against having an extra import statement at the top of the file, nor a few extra lines of code. ...
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JPA: what is the proper pattern for iterating over large result sets?

... now, and thus the latest Hibernate we can use is 3.3.2. Adding couple of extra parameters did the job, and code like this runs without OOMEs: StatelessSession session = ((Session) entityManager.getDelegate()).getSessionFactory().openStatelessSession(); Query query = session ...