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How to avoid circular imports in Python? [duplicate]
I know the issue of circular imports in python has come up many times before and I have read these discussions. The comment that is made repeatedly in these discussions is that a circular import is a sign of a bad design and the code should be reorganised to avoid the circular import.
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How to toggle a value in Python
...gle
>>> x
False
Solution using subtraction
If the values are numerical, then subtraction from the total is a simple and fast way to toggle values:
>>> A = 5
>>> B = 3
>>> total = A + B
>>> x = A
>>> x = total - x # toggle
>>> x
3
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Correct approach to global logging in Golang
...e. a copy of the Logger) and then multiple goroutines might write to the same io.Writer concurrently. That might be a serious problem, depending on the implementation of the writer.
Should each goroutine or function create a logger?
I wouldn't create a separate logger for each function o...
Why does pycharm propose to change method to static
The new pycharm release (3.1.3 community edition) proposes to convert the methods that don't work with the current object's state to static.
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Read and write a String from text file
...g and writing you should use a location that is writeable, for example documents directory. The following code shows how to read and write a simple string. You can test it on a playground.
Swift 3.x - 5.x
let file = "file.txt" //this is the file. we will write to and read from it
let text = "some...
Correct way to write loops for promise.
...tees the order of calling logger.log(res);
Actually, it does. That statement is executed before the resolve call.
Any suggestions?
Lots. The most important is your use of the create-promise-manually antipattern - just do only
promiseWhile(…, function() {
return db.getUser(email)
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while (1) Vs. for (;;) Is there a speed difference?
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In perl, they result in the same opcodes:
$ perl -MO=Concise -e 'for(;;) { print "foo\n" }'
a <@> leave[1 ref] vKP/REFC ->(end)
1 <0> enter ->2
2 <;> nextstate(main 2 -e:1) v ->3
9 <2> leaveloop vK/2 ->a
3...
Where can I get a “useful” C++ binary search algorithm?
... binary search algorithm that is compatible with the C++ STL containers, something like std::binary_search in the standard library's <algorithm> header, but I need it to return the iterator that points at the result, not a simple boolean telling me if the element exists.
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Choosing the default value of an Enum type without having to change values
In C#, is it possible to decorate an Enum type with an attribute or do something else to specify what the default value should be, without having the change the values? The numbers required might be set in stone for whatever reason, and it'd be handy to still have control over the default.
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Drop multiple tables in one shot in mysql
How to drop multiple tables from one single database at one command.
something like,
4 Answers
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