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Does using “new” on a struct allocate it on the heap or stack?
When you create an instance of a class with the new operator, memory gets allocated on the heap. When you create an instance of a struct with the new operator where does the memory get allocated, on the heap or on the stack ?
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When should one use final for method parameters and local variables?
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Obsess over:
Final fields - Marking fields as final forces them to be set by end of construction, making that field reference immutable. This allows safe publication of fields and can avoid the need for synchronization on later reads. (Note that for an object reference, only the field r...
Using a dispatch_once singleton model in Swift
I'm trying to work out an appropriate singleton model for usage in Swift. So far, I've been able to get a non-thread safe model working as:
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rsync exclude according to .gitignore & .hgignore & svn:ignore like --filter=:C
Rsync includes a nifty option --cvs-exclude to “ignore files in the same way CVS does”, but CVS has been obsolete for years. Is there any way to make it also exclude files which would be ignored by modern version control systems (Git, Mercurial, Subversion)?
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Maven parent pom vs modules pom
There seem to be several ways to structure parent poms in a multiproject build and I wondering if anyone had any thoughts on what the advantages / drawbacks are in each way.
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MySQL indexes - what are the best practices?
...reading up on indexing, there's a lot written about it, and it's important to understand what's going on.
Broadly speaking, an index imposes an ordering on the rows of a table.
For simplicity's sake, imagine a table is just a big CSV file. Whenever a row is inserted, it's inserted at the end. ...
Adding a public key to ~/.ssh/authorized_keys does not log me in automatically
I added the public SSH key to the authorized_keys file. ssh localhost should log me in without asking for the password.
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What is the purpose of fork()?
...ms and man pages of Linux, I have seen code using fork() . Why do we need to use fork() and what is its purpose?
15 Answ...
Staging Deleted files
Say I have a file in my git repository called foo .
9 Answers
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Releasing memory in Python
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Memory allocated on the heap can be subject to high-water marks. This is complicated by Python's internal optimizations for allocating small objects (PyObject_Malloc) in 4 KiB pools, classed for allocation sizes at multiples of 8 bytes -- up to 256 bytes (512 bytes in ...