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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...
python: how to identify if a variable is an array or a scalar
...you say so, that would be very kind to explain why, maybe I'm not the only one to wonder why it should be avoided.
– Olivier Pons
May 30 '17 at 7:50
1
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Is there a limit to the length of a GET request? [duplicate]
...end to be user readable for hyperlinks, but that's not their purpose, just one use. w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.3
– DougW
Feb 10 '12 at 5:52
3
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For each row in an R dataframe
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When Darren mentioned robust, he meant something like shifting the orders of the columns. This answer would not work whereas the one with by() would still work.
– HelloWorld
Jan 4 '16 at 6:26
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How to get week number in Python?
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nice one, I just added the now day I think it will be helpful, it was what I was serching for :D
– Vitaliy Terziev
Nov 7 '16 at 20:20
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PHP method chaining?
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@tfont True, but then we're introducing magic methods. One concept at a time should be sufficient.
– Kristoffer Sall-Storgaard
Apr 22 '14 at 8:49
4
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