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What is the proper way to re-attach detached objects in Hibernate?

...e to the DB, and overwrite any intervening updates. refresh() cannot be called on a detached entity. lock() cannot be called on a detached entity, and even if it could, and it did reattach the entity, calling 'lock' with argument 'LockMode.NONE' implying that you are locking, but not locking, i...
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Difference between Role and GrantedAuthority in Spring Security

...thority as being a "permission" or a "right". Those "permissions" are (normally) expressed as strings (with the getAuthority() method). Those strings let you identify the permissions and let your voters decide if they grant access to something. You can grant different GrantedAuthoritys (permissions...
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Warning “Do not Access Superglobal $_POST Array Directly” on Netbeans 7.4 for PHP

...rning may disappear, but if you don't specify a filter then you will not really fix the security issue NetBeans is pointing out. For example, if you are expecting an int, use: filter_input(INPUT_POST, 'var_name', FILTER_SANITIZE_NUMBER_INT) – HoffZ Jul 18 '14 a...
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Serializing object that contains cyclic object value

...e will come here for is debugging their circular objects and there's not really a great way to do that without pulling in a bunch of code, here goes. One feature that's not as well-known as JSON.stringify() is console.table(). Simply call console.table(whatever);, and it will log the variable in the...
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In Intellij, how do I toggle between camel case and underscore spaced?

... I use a plugin called String Manipulation which has the capabilities you're looking for (and more). Select historyOfPresentIllness and press Alt+M to bring up the plugin menu, then press: 5 - To snake_case (or to camelCase) which convert...
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How to run a program without an operating system?

How do you run a program all by itself without an operating system running? Can you create assembly programs that the computer can load and run at startup, e.g. boot the computer from a flash drive and it runs the program that is on the CPU? ...
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What is “:-!!” in C code?

...sizeof(struct { int: -!!(e); })) (e): Compute expression e. !!(e): Logically negate twice: 0 if e == 0; otherwise 1. -!!(e): Numerically negate the expression from step 2: 0 if it was 0; otherwise -1. struct{int: -!!(0);} --> struct{int: 0;}: If it was zero, then we declare a struct with an an...
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Is there a range class in C++11 for use with range based for loops?

...:irange, which is a bit more focused in scope. C++20's range library will allow you to do this via view::iota(start, end). share | improve this answer | follow ...
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Efficiently updating database using SQLAlchemy ORM

...ngs in mind when using the ORM and plain SQL in the same transaction. Basically, from one side, ORM data modifications will only hit the database when you flush the changes from your session. From the other side, SQL data manipulation statements don't affect the objects that are in your session. So...
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Pass a parameter to a fixture function

... through the tester fixture. I had a similar problem--I have a fixture called test_package, and I later wanted to be able to pass an optional argument to that fixture when running it in specific tests. For example: @pytest.fixture() def test_package(request, version='1.0'): ... request....