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...ts, what type of object could you add to List foo3 that would be legal for all the above possible ArrayList assignments:
You can't add an Integer because foo3 could be pointing at a List<Double>.
You can't add a Double because foo3 could be pointing at a List<Integer>.
You can't add a ...
How to exit from Python without traceback?
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If sys.exit() is called in "main program stuff", the code above throws away the value passed to sys.exit. Notice that sys.exit raises SystemExit and the variable "e" will contain the exit code.
– bstpierre
...
Correct way to convert size in bytes to KB, MB, GB in JavaScript
...ly more appropriate than toPrecision(n) to have a consistant precision for all the values. And to avoid trailing zeros (ex: bytesToSize(1000) // return "1.00 KB") we could use parseFloat(x). I suggest to replace the last line by: return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i...
import module from string variable
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Finally, also remember that you can't import anything if there is no __init__.py in the folder with file you are trying to import.
– Seanny123
Dec 6 '13 at 7:31
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Class method decorator with self arguments?
... @wraps(f)
def wrapped(self, *f_args, **f_kwargs):
if callable(_lambda) and search(pattern, (_lambda(self) or '')):
f(self, *f_args, **f_kwargs)
return wrapped
return wrapper
class MyTest(object):
def __init__(self):
self.name = 'foo'
...
Set a path variable with spaces in the path in a Windows .cmd file or batch file
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this should be the accepted answer. for some reason, calling set from an if block doesn't work if the value has a space and is unquoted.
– Kevin
Aug 1 '19 at 16:35
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Rank function in MySQL
... (SELECT @curRank := 0) r
ORDER BY age;
The (SELECT @curRank := 0) part allows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT I...
Get properties and values from unknown object
...swered Nov 10 '10 at 13:15
CocowallaCocowalla
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Python Logging (function name, file name, line number) using a single file
...line number (within the code) where I send a message to the log output. Finally, since this application comprises of many files, I want to create a single log file so that I can better understand the control flow of the application.
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How to initialize a List to a given size (as opposed to capacity)?
...ount copies of the reference passed for the value parameter - so they will all refer to the same object. That may or may not be what you want, depending on your use case.
EDIT: As noted in comments, you could make Repeated use a loop to populate the list if you wanted to. That would be slightly fas...