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Calculate size of Object in Java [duplicate]
... an object takes up for a project (I'm comparing sizes of data structures) and it seems like there is no method to do this in Java. Supposedly, C/C++ has sizeOf() method, but this is nonexistant in Java. I tried recording the free memory in the JVM with Runtime.getRuntime().freeMemory() before a...
What's the optimum way of storing an NSDate in NSUserDefaults?
...t primitive)? Just [sharedDefaults setObject:theDate forKey:@"theDateKey"] and be done with it. NSDate is one of the "main types" supported by the PLIST format (dates, numbers, strings, data, dictionaries, and arrays), so you can just store it directly.
See the documentation for proof.
Just store ...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
...nager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table.
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PHP append one array to another (not array_push or +)
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actually, this is the most elegant and efficient way. thanks
– Hassan Ali Salem
Nov 12 '19 at 8:39
add a comment
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Separating class code into a header and cpp file
I am confused on how to separate implementation and declarations code of a simple class into a new header and cpp file. For example, how would I separate the code for the following class?
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How can one change the timestamp of an old commit in Git?
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Use git filter-branch with an env filter that sets GIT_AUTHOR_DATE and GIT_COMMITTER_DATE for the specific hash of the commit you're looking to fix.
This will invalidate that and all future hashes.
Example:
If you wanted to change the dates of commit 119f9ecf58069b265ab22f1f97d2b648faf932...
fatal: git-write-tree: error building trees
... Valid answer, but would be nice to have an explanation for what happened and why this was necessary.
– mmigdol
Jun 20 '14 at 18:18
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What is the Python equivalent of static variables inside a function?
...e problem with the first approach is it isn't immediately obvious that foo and foo.counter = are intimately related. however, I ultimately prefer the decorator approach, as there's no way the decorator will not be called and it is semantically more obvious what it does (@static_var("counter", 0) is...
How to configure Visual Studio to use Beyond Compare
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In Visual Studio, go to the Tools menu, select Options, expand Source Control, (In a TFS environment, click Visual Studio Team Foundation Server), and click on the Configure User Tools button.
Click the Add button.
Enter/select the following options for Compare:
Extension: .*
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Concrete Javascript Regex for Accented Characters (Diacritics)
...( replacing characters.. eh , how JavaScript doesn't follow the Unicode standard concerning RegExp , etc.) and haven't really found a concrete answer to the question:
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