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Can enums be subclassed to add new elements?
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If you could tell us more about how you want to use this, we could potentially suggest alternative solutions.
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Allowed characters in filename [closed]
Where can I find a list of allowed characters in filenames, depending on the operating system?
(e.g. on Linux, the character : is allowed in filenames, but not on Windows)
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sort object properties and JSON.stringify
...Obj, Object.keys(flattenObject(sortMyObj)).sort());
To do it programmatically with something you can tweak yourself, you need to push the object property names into an array, then sort the array alphabetically and iterate through that array (which will be in the right order) and select each value ...
How to generate random number with the specific length in python
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To get a random 3-digit number:
from random import randint
randint(100, 999) # randint is inclusive at both ends
(assuming you really meant three digits, rather than "up to three digits".)
To use an arbitrary number of digits:
from random import randint
def random_with_N_digits(n):
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How to determine if an NSDate is today?
...ethod anyway.
NOTE as with many answers on SO, after 7 years this is totally out of date. In Swift now just use .isDateInToday
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R: rJava package install failing
When installing rJava using the install.packages("rJava") command I get the following error:
16 Answers
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Passing an Array as Arguments, not an Array, in PHP
...dard func($arg1, $arg2) manner. But now I'm lost on how to do it. I recall the manner of passing by reference, how to "glob" incoming parameters ... but not how to de-list the array into a list of arguments.
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“From View Controller” disappears using UIViewControllerContextTransitioning
... goes black. The key UIWindow is completely empty – no view hierarchy at all!
I played around a bit and it looks like there is an easy workaround, for simple cases. You can just re-add the toViewController's view as a subview of the key window's:
transitionContext.completeTransition(true)
UIAp...
Best way to initialize (empty) array in PHP
...ferent ways, with the literal grammar not being dogged by the overhead of calling a function.
PHP, on the other hand, has language constructs that may look like functions but aren't treated as such. Even with PHP 5.4, which supports [] as an alternative, there is no difference in overhead because...
How to wait for all goroutines to finish without using time.Sleep?
This code selects all xml files in the same folder, as the invoked executable and asynchronously applies processing to each result in the callback method (in the example below, just the name of the file is printed out).
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