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An example of how to use getopts in bash
...should return 0, upon hitting a non-existing flag it should return >0 (for the sake of simplicity I didn't differentiate between those cases and nobody forces you to print the usage text in the latter case). I have seen programs which always return != 0, though, even on -h/--help. Maybe I should ...
How to squash all git commits into one?
How do you squash your entire repository down to the first commit?
17 Answers
17
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Fatal Error: Allowed Memory Size of 134217728 Bytes Exhausted (CodeIgniter + XML-RPC)
...that periodically send new sales data to one centralized database, which stores the data into one big database for report generation.
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What to put in a python module docstring? [closed]
...I've read both PEP 8 and PEP 257 , and I've written lots of docstrings for functions and classes, but I'm a little unsure about what should go in a module docstring. I figured, at a minimum, it should document the functions and classes that the module exports, but I've also seen a few modules th...
How to tell git to ignore individual lines, i.e. gitignore for specific lines of code [duplicate]
.gitignore can ignore whole files, but is there a way to ignore specific lines of code while coding?
2 Answers
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How do I correctly clone a JavaScript object?
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To do this for any object in JavaScript will not be simple or straightforward. You will run into the problem of erroneously picking up attributes from the object's prototype that should be left in the prototype and not copied to the new ...
Check if a method exists
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if ([obj respondsToSelector:@selector(methodName:withEtc:)]) {
[obj methodName:123 withEtc:456];
}
share
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Why is the String class declared final in Java?
...ed as immutable objects. You should read about immutability to understand more about it.
One advantage of immutable objects is that
You can share duplicates by pointing them to a single instance.
(from here).
If String were not final, you could create a subclass and have two strings that loo...
Is delete this allowed?
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The C++ FAQ Lite has a entry specifically for this
https://isocpp.org/wiki/faq/freestore-mgmt#delete-this
I think this quote sums it up nicely
As long as you're careful, it's OK for an object to commit suicide (delete this).
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Stack Memory vs Heap Memory [duplicate]
I am programming in C++ and I am always wondering what exactly is stack memory vs heap memory. All I know is when I call new, I would get memory from heap. If if create local variables, I would get memory from stack. After some research on internet, the most common answer is stack memory is temporar...