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Create list of single item repeated N times
...'string'] * len(columns)
Mutable items
I've used Python for a long time now, and I have never seen a use-case where I would do the above with a mutable instance. Instead, to get, say, a mutable empty list, set, or dict, you should do something like this:
list_of_lists = [[] for _ in columns]
T...
Can you run GUI applications in a Docker container?
...er nicely for me on an Ubuntu 14.04 laptop with docker 1.5 earlier; but is now failing for me on Ubuntu 15.04, docker 1.6.2, with the error Can't open display: :0. Any ideas?
– cboettig
Jun 10 '15 at 4:30
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How to create a WPF Window without a border that can be resized via a grip only?
...resize the window.
After using this short code the result is this:
And now, the white border disappeared without using ResizeMode="NoResize" and AllowsTransparency="True", also it shows a shadow in the window.
Later I will explain how to make to work the buttons (I didn't used images for the bu...
Cannot ping AWS EC2 instance
...h Advanced Security
Select inbound rules
4) Done! Hopefully you should now be able to ping your server.
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How to reverse apply a stash?
...y git stash. I've applied it to my working copy using git stash apply . Now, I'd like to back out those changes by reverse applying the patch (kind of like what git revert would do but against the stash).
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What's is the difference between train, validation and test set, in neural networks?
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I know I'm not supposed to post meaningless comments like this, but wanted to tell you that I appreciate this answer greatly :)
– Llamageddon
May 5 '14 at 22:31
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How can I read and parse CSV files in C++?
...:cout << "4th Element(" << (*loop)[3] << ")\n";
}
}
Now that we are in 2020 lets add a CSVRange object:
class CSVRange
{
std::istream& stream;
public:
CSVRange(std::istream& str)
: stream(str)
{}
CSVIterator begin() const {...
HTML5 Pre-resize images before uploading
...nt this doesn't cover is maintaining the orientation information, without knowledge of this metadata the image is resized and saved as-is, losing any metadata within the image for orientation meaning that images taken on a tablet device "upside down" were rendered as such, although they would have b...
Is it possible to reopen a closed branch in Mercurial?
...
try with following:
hg pull && hg update branch_name
Now make a small change to one of the file and then commit it
hg commit -m "minor change"
then push it
hg push -b .
Now you should be able to work normally.
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is it possible to change values of the array when doing foreach in javascript?
....forEach(function(part, index) {
arr[index] = "four";
});
alert(arr);
Now if array arr was an array of reference types, the following code will work because reference types store a memory location of an object instead of the actual object.
var arr = [{ num : "one" }, { num : "two"}, { num : "t...