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How to override equals method in Java
...People or a childclass
People thatPeople = (People)that; // than we can cast it to People safely
return this.name.equals(thatPeople.name) && this.age == thatPeople.age;// if they have the same name and same age, then the 2 objects are equal unless they're pointing to different memory a...
Determining Whether a Directory is Writeable
....W_OK | os.X_OK) With os.W_OK by itself you can only delete the directory (and only if that directory is empty)
– fthinker
Mar 23 '12 at 17:13
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Nullable type issue with ?: Conditional Operator
...ving that:
First is to make null compatible with DateTime (for instance, cast null to DateTime? as the gentleman with 70 upvotes suggests, or cast null to Object or to ValueType).
The second is to make the DateTime compatible with null (for instance, cast DateTime to DateTime?).
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Technically, why are processes in Erlang more efficient than OS threads?
...er to switch context, because they only switch at known, controlled points and therefore don't have to save the entire CPU state (normal, SSE and FPU registers, address space mapping, etc.).
Erlang processes use dynamically allocated stacks, which start very small and grow as necessary. This permits...
Find all files in a directory with extension .txt in Python
...riable is a single filename. Even better would be to change the f to files and then the for loops could become for file in files.
– martineau
Oct 26 '10 at 14:18
47
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How to read/write from/to file using Go?
...en trying to learn Go on my own, but I've been stumped on trying read from and write to ordinary files.
8 Answers
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How to get an absolute file path in Python
...resumed), there is no linkage between the argument to the abspath function and a real file. You could give any pathname- non-existent files and directory heirarchies are fine- and abspath will simply resolve the bits of the path (including the parent directory ".." element) and return a string. This...
How can I use Python to get the system hostname?
...at program for a local network. I would like be able to identify computers and get the user-set computer name with Python.
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Python: fastest way to create a list of n lists
...None, n)]
It does not have to create a new int object in every iteration and is about 15 % faster on my machine.
Edit: Using NumPy, you can avoid the Python loop using
d = numpy.empty((n, 0)).tolist()
but this is actually 2.5 times slower than the list comprehension.
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NULL vs nullptr (Why was it replaced?) [duplicate]
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but we can always specify the type using typecast operator like f( (int) NULL ) or f((foo*) NULL ) as an alternative to resolve ambiguity... correct ?
– Arjun
Jun 16 '18 at 17:18
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