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How can I find the number of arguments of a Python function?
...ms = sig.parameters
print(params['kwarg1']) # prints: kwarg1=20
Additionally, you can call len on sig.parameters to also see the number of arguments this function requires:
print(len(params)) # 3
Each entry in the params mapping is actually a Parameter object that has further attributes makin...
“for loop” with two variables? [duplicate]
... the request for "a function that will read lists "t1" and "t2" and return all elements that are identical", I don't think the OP wants zip or product. I think they want a set:
def equal_elements(t1, t2):
return list(set(t1).intersection(set(t2)))
# You could also do
# return list(set(...
GCC compile error with >2 GB of code
...inv2 -
32*s.x12pow2*s.x15*s.x35*s.x45*s.mWpowinv2 -...
right?
If all your functions have a similar "format" (multiply n numbers m times and add the results - or something similar) then I think you can do this:
change the generator program to output offsets instead of strings (i.e. instea...
How to get IP address of the device from code?
...aos.toByteArray(), "UTF-8") : new String(baos.toByteArray());
} finally {
try{ is.close(); } catch(Exception ignored){}
}
}
/**
* Returns MAC address of the given interface name.
* @param interfaceName eth0, wlan0 or NULL=use first interface
* @r...
Putty: Getting Server refused our key Error
...
OK, there was a small typo in my key. Apparently when pasting to file the first letter was cut off and it started with sh-rsa instead of ssh-rsa.
nrathathaus - your answer was very helpful, thanks a lot, this answer is credited to you :) I di...
Purpose of Python's __repr__
...
__repr__ should return a printable representation of the object, most likely one of the ways possible to create this object. See official documentation here. __repr__ is more for developers while __str__ is for end users.
A ...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...ON DUPLICATE KEY UPDATE.
If you use INSERT IGNORE, then the row won't actually be inserted if it results in a duplicate key. But the statement won't generate an error. It generates a warning instead. These cases include:
Inserting a duplicate key in columns with PRIMARY KEY or UNIQUE constrain...
Avoiding SQL injection without parameters
...y. Instead they want to replace single apostrophes with two apostrophes in all strings to avoid sql injections. Our databases are all running Sql Server 2005 or 2008 and our code base is running on .NET framework 2.0.
...
Checking if a double (or float) is NaN in C++
...nly if f is NaN.
Note that, as some comments below have pointed out, not all compilers respect this when optimizing code.
For any compiler which claims to use IEEE floating point, this trick should work. But I can't guarantee that it will work in practice. Check with your compiler, if in doubt.
...
php stdClass to array
...g functions). "But I already did this" you say. Not exactly - you used json_decode on the array, but you need to encode it with json_encode first.
Requirements
The json_encode and json_decode methods. These are automatically bundled in PHP 5.2.0 and up. If you use any older version there's also a ...