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What exactly is an “open generic type” in .NET? [duplicate]
... parameters. More specifically:
A type parameter defines an open type.
An array type is an open type if and only if its element type is an open type.
A constructed type is an open type if and only if one or more of its type arguments is an open type. A constructed nested type is an open type if and...
Transpose list of lists
... transpose. For a list, a:
>>> import numpy as np
>>> np.array(a).T.tolist()
[[1, 4, 7], [2, 5, 8], [3, 6, 9]]
Or another one without zip:
>>> map(list,map(None,*a))
[[1, 4, 7], [2, 5, 8], [3, 6, 9]]
...
Is there a Python equivalent of the C# null-coalescing operator?
...
glglgl has the best answer. I used timeit on a large test array and the reduce implementation is unacceptably slow, the multi-line for/if version is fastest, and the next implementation is very slightly behind. The next version is the best overall when considering simplicity and con...
How to deal with SettingWithCopyWarning in Pandas?
...ence is that iloc expects either
integers/positions for index or a numpy array of boolean values, and
integer/position indexes for the columns.
For example,
df.loc[df.A > 5, 'B'] = 4
Can be written nas
df.iloc[(df.A > 5).values, 1] = 4
And,
df.loc[1, 'A'] = 100
...
How can I turn a List of Lists into a List in Java 8?
...
If you need to do explicit casting (array of primitives to List for example) then lambdas may be necessary as well.
– Michael Fulton
May 28 '17 at 3:58
...
How to integrate nodeJS + Socket.IO and PHP?
...nall = new Object();
knall.totten = "4 tomtar";
knall.theArr = new Array();
knall.theArr.push("hoppla")
knall.theArr.push("hej")
var strKnall = JSON.stringify(knall);
res.end(strKnall);
}).listen(process.env.PORT);
And here is the simple piece of code in php, calling the...
Computed read-only property vs function in Swift
...} - returns same result. It is modified sample from apple documentation on Array.filter(). And it is much more easy to understand.
– poGUIst
Jul 26 '18 at 19:06
...
How to send HTTP request in java? [duplicate]
...out.println(method.getResponseBodyAsString());
//OR as a byte array
byte [] res = method.getResponseBody();
//write to file
File
Please explain the exec() function and its family
...e passed as a list of strings to the main()
v : arguments are passed as an array of strings to the main()
p : path/s to search for the new running program
e : the environment can be specified by the caller
You can mix them, therefore you have:
int execl(const char *path, const char *arg, ...);
i...
what is the basic difference between stack and queue?
...mentation) is hidden from the end user. A stack can be implemented with an array or with a linked list.
– gdyrrahitis
Aug 21 '18 at 20:38
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