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Is it possible to forward-declare a function in Python?
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+1 most direct answer, with the keystone concept: Pascal=define higher, Python=define earlier.
– Bob Stein
Oct 26 '14 at 16:20
1
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LaTeX table positioning
...acement option (e.g. \begin{table}[H]) to make sure it doesn't get repositioned.
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How can I extend typed Arrays in Swift?
...lt
}
}
Adding these two methods to the Array class allows me to call one of the two methods on an array and successfully remove duplicates. Note that the elements in the array must conform to the Hashable protocol. Now I can do this:
var dupes = ["one", "two", "two", "three"]
let deDuped = ...
How do I prompt for Yes/No/Cancel input in a Linux shell script?
... [Nn]* ) exit;;
* ) echo "Please answer yes or no.";;
esac
done
Another method, pointed out by Steven Huwig, is Bash's select command. Here is the same example using select:
echo "Do you wish to install this program?"
select yn in "Yes" "No"; do
case $yn in
Yes ) make i...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...TAMP. Beware that DATETIME columns do not store information about the timezone, so your application will have to know which timezone was used.
Other Possible solutions described on Wikipedia
Wait for MySQL devs to fix this bug reported over a decade ago.
Are there any possible alternatives to us...
How can I validate a string to only allow alphanumeric characters in it?
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@Phil. Maybe, but by then I will be delegating to someone who knows regular expressions ;-)
– Sentinel
Oct 2 '15 at 10:29
3
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How can I get the MAC and the IP address of a connected client in PHP?
...MAC address
The client MAC address will not be available to you except in one special circumstance: if the client is on the same ethernet segment as the server.
So, if you are building some kind of LAN based system and your clients are on the same ethernet segment, then you could get the MAC addr...
Properties file in python (similar to Java Properties)
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Since nowhere here it is mentioned, let me add again that this is not the same. I cant speak for Java or Py3, and maybe it works for simple key/values. But the syntax for string interpolation is different. This solution provides Python formatting, ie. %(...
Get model's fields in Django
...This means if something does change in the future, you only have to change one function.
def get_model_fields(model):
return model._meta.fields
I believe this will return a list of Field objects. To get the value of each field from the instance, use getattr(instance, field.name).
Update: Dja...
Passing argument to alias in bash [duplicate]
.../to/bar "$@" fixed args; }
$ foo abc 123
will be executed as if you had done
$ /path/to/bar abc 123 fixed args
To undefine an alias:
unalias foo
To undefine a function:
unset -f foo
To see the type and definition (for each defined alias, keyword, function, builtin or executable file):
ty...