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Remove all values within one list from another list? [duplicate]
...ime to find an item is linear, since a Python set is implemented as a hash table. Therefore, to remove an item of a set no time is spend locating the item, whereas in a list the item has to be found first.
– Guillem Cucurull
Aug 15 '18 at 21:24
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Bash empty array expansion with `set -u`
...-} or ${arr[@]:0}, are not safe across all major versions of Bash.
As the table below shows, the only expansion that is reliable across all modern-ish Bash versions is ${arr[@]+"${arr[@]}"} (column +"). Of note, several other expansions fail in Bash 4.2, including (unfortunately) the shorter ${arr[...
Store JSON object in data attribute in HTML jQuery
... delete button (each button gets a different json object...) I have in the table by putting in the hmtl tag like I showed above. Is what you're suggesting going to allow me to associate each object with to the corresponding delete button? How would I do that, how would I use $('#myElement'). in the ...
How to use the IEqualityComparer
...good hash function to work efficiently because it internally builds a hash table.
When implementing interfaces of classes it is important to read the documentation, to know which contract you’re supposed to implement.1
In your code, the solution is to forward GetHashCode to Class_reglement.Numf....
Prevent jQuery UI dialog from setting focus to first textbox
...s>
In the documentation, the focus logic is explained (just under the table of contents, under the title 'Focus'):
Upon opening a dialog, focus is automatically moved to the first item
that matches the following:
The first element within the dialog with the autofocus attribute
T...
MongoDB: Is it possible to make a case-insensitive query?
...re an uppercase copy and search against that. For instance, I have a User table that has a username which is mixed case, but the id is an uppercase copy of the username. This ensures case-sensitive duplication is impossible (having both "Foo" and "foo" will not be allowed), and I can search by id ...
Aligning textviews on the left and right edges in Android layout
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For dynamic tables, you can do : TableRow.LayoutParams col1Params = new TableRow.LayoutParams(); // Wrap-up the content of the row col1Params.height = LayoutParams.WRAP_CONTENT; col1Params.width = LayoutParams.WRAP_CONTENT; //...
Force IE compatibility mode off using tags
...the standards supported by that version of IE (e.g., IE=8 will better obey table border spacing and some pseudo selectors than IE=7).
Whereas, the Emulate modes tell IE to follow any <!DOCTYPE> directives in your page, rendering standards mode based the version you choose and quirks mode bas...
How to calculate a logistic sigmoid function in Python?
...en you really need performance, a common practice is to have a precomputed table of the the sigmoid function that hold in RAM, and trade some precision and memory for some speed (for example: http://radimrehurek.com/2013/09/word2vec-in-python-part-two-optimizing/ )
Also, note that expit implementat...
How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell
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It gives me this error # dmidecode 3.0 /sys/firmware/dmi/tables/smbios_entry_point: Permission denied Scanning /dev/mem for entry point. /dev/mem: Permission denied
– VVB
Sep 13 '17 at 12:57
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