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Why does @foo.setter in Python not work for me?
...problems is that both methods need the same name for the property to work. If you define the setter with a different name like this it won't work:
@x.setter
def x_setter(self, value):
...
And one more thing that is not completely easy to spot at first, is the order: The getter must be defined...
Why does javascript replace only first instance when using replace? [duplicate]
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Why difference then C# replace. Thought it would replace all occurrences by default. But why did it take 2 slashes away if it is only first occurrence?
– chobo2
Dec 27 '09 at 21:44
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Oracle find a constraint
...00381400'
/
Like all data dictionary views, this a USER_CONSTRAINTS view if you just want to check your current schema and a DBA_CONSTRAINTS view for administration users.
The construction of the constraint name indicates a system generated constraint name. For instance, if we specify NOT NULL i...
On duplicate key ignore? [duplicate]
... IGNORE containing all of these categories rather than testing to see the differences between these categories.
– Jay
Sep 25 '13 at 16:35
4
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What do column flags mean in MySQL Workbench?
... the bytes in the values.)
UN - Unsigned (non-negative numbers only. so if the range is -500 to 500, instead its 0 - 1000, the range is the same but it starts at 0)
UQ - Create/remove Unique Key
ZF - Zero-Filled (if the length is 5 like INT(5) then every field is filled with 0’s to the 5th ...
How to stop Flask from initialising twice in Debug Mode? [duplicate]
...ely, you can check for the value of WERKZEUG_RUN_MAIN in the environment:
if os.environ.get("WERKZEUG_RUN_MAIN") == "true":
# The reloader has already run - do what you want to do here
However, the condition is a bit more convoluted when you want the behavior to happen any time except in the ...
What is the Python equivalent for a case/switch statement? [duplicate]
...alent switch block is invoked:
options[num]()
This begins to fall apart if you heavily depend on fall through.
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numpy matrix vector multiplication [duplicate]
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Other Solutions
Also know there are other options:
As noted below, if using python3.5+ the @ operator works as you'd expect:
>>> print(a @ b)
array([16, 6, 8])
If you want overkill, you can use numpy.einsum. The documentation will give you a flavor for how it works, but honestly,...
Swift: Determine iOS Screen size [duplicate]
I would like to use Swift code to properly position items in my app for no matter what the screen size is. For example, if I want a button to be 75% of the screen wide, I could do something like (screenWidth * .75) to be the width of the button. I have found that this could be determined in Object...
How to calculate number of days between two given dates?
If I have two dates (ex. '8/18/2008' and '9/26/2008' ), what is the best way to get the number of days between these two dates?
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