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Python nested functions variable scoping [duplicate]
...er()
With the statement b = 4 commented out, this code outputs 0 1, just what you'd expect.
But if you uncomment that line, on the line print b, you get the error
UnboundLocalError: local variable 'b' referenced before assignment
It seems mysterious that the presence of b = 4 might somehow mak...
Calculating Distance between two Latitude and Longitude GeoCoordinates
...is and the GeoCordinate for the device has a GetDistanceTo method which is what you had referenced (but not what you have above). No big deal. I'm going to test this out to see if the built in calculation is any better. Thanks Nigel!
– Jason N. Gaylord
Jun 17 '...
What does “Protocol … can only be used as a generic constraint because it has Self or associated typ
...new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f24926310%2fwhat-does-protocol-can-only-be-used-as-a-generic-constraint-because-it-has%23new-answer', 'question_page');
}
);
Post as a guest
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Refresh a page using PHP
...ow can I refresh a page using PHP periodically? If I can not do it by PHP, what is the best recommended scenario?
13 Answer...
Is there shorthand for returning a default value if None in Python? [duplicate]
...@starhusker's x or "default". Often I used to use the ternary sytax b/c I what to do x.value if X might be None. So x.value if x else "default", but this is more readable getattr(obj, "value", "default"). The trade off is that the later is not caught by many auto-refactor tools.
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Why use static_cast(x) instead of (int)x?
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The main reason is that classic C casts make no distinction between what we call static_cast<>(), reinterpret_cast<>(), const_cast<>(), and dynamic_cast<>(). These four things are completely different.
A static_cast<>() is usually safe. There is a valid conversi...
CSS selector for a checked radio button's label
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Just what I needed! Thanks.
– Ryan
Feb 26 '16 at 20:57
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How to handle dependency injection in a WPF/MVVM application
...ifference. But why/how is the VM constructor launching a modal window? And what kind of window?
– sondergard
Apr 20 '17 at 14:28
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How to assign the output of a command to a Makefile variable
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Use the Make shell builtin like in MY_VAR=$(shell echo whatever)
me@Zack:~$make
MY_VAR IS whatever
me@Zack:~$ cat Makefile
MY_VAR := $(shell echo whatever)
all:
@echo MY_VAR IS $(MY_VAR)
share...
Delete all local git branches
... try 'git branch --merged master | grep -v master | xargs echo' to debug what exactly it is trying to delete? have no better ideas...
– mBardos
Aug 1 '14 at 8:29
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