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How to get all subsets of a set? (powerset)
... = [a for a in A]
ps = set()
for i in range(2 ** length):
selector = f'{i:0{length}b}'
subset = {l[j] for j, bit in enumerate(selector) if bit == '1'}
ps.add(frozenset(subset))
return ps
If you want exactly the output you posted in your answer use this:
>&...
Finding JavaScript memory leaks with Chrome
...and the element you will see that is referenced by a "cache" function.
Select the row and in your console type $0, you will see the actual function and location:
>$0
function cache( key, value ) {
// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)...
How to change the indentation width in emacs javascript mode
...M-x customize
Then, choose "Programming," and then "Languages," and then select a language/mode to customize. Edit the options as you see fit. When done, choose either "Save for current session" or "Save for future sessions."
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What is the easiest way to remove the first character from a string?
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This elegant slice!(0) really should be the selected answer, as using asdf[0] = '' to remove the first character is ridiculous (just like using gsub with regex and shooting a fly with a howitzer).
– f055
Mar 15 '16 at 19:32
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Git error: “Host Key Verification Failed” when connecting to remote repository
...the same mistake as me. You need to type yes. Simply hitting enter doesn't select yes by default
– JolonB
May 24 at 22:20
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Is there any particular difference between intval and casting to int - `(int) X`?
... = implode(",", array_map('intval', $_POST['array_of_integers']));
$sql = "SELECT * FROM table WHERE ids IN ($ids)";
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Why does pycharm propose to change method to static
...that the reason for this warning is config in Pycharm.
You can uncheck the selection Method may be static in Editor->Inspection
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Round a double to 2 decimal places [duplicate]
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And with DecimalFormat you can also select the rounding mode; default will match the OP's example or they may want RoundingMode.DOWN.
– Kevin Brock
May 11 '10 at 7:03
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Where does Visual Studio look for C++ header files?
...e file directory to the project settings by right-clicking the project and selecting Properties, clicking on "C/C++", and adding the directory containing the include files to the "Additional Include Directories" edit box.
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Generate random password string with requirements in javascript
...ough bits to "fill up" the full decimal space, the last digit will only be selected from a certain set of values. For example, on my computer, the last digit is only ever "i", "r", and "9". Use this instead: Math.random().toString(36).substr(2, 8)
– Joel
Jan 19...