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Which characters make a URL invalid?
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@techiferous, Yeah, I forgot to allow "%" escaped characters. It should've looked more like: /^([!#$&-;=?-[]_a-z~]|%[0-9a-fA-F]{2})+$/ Was there anything else that you found it should've been accepting? (Just to be clear, that regex only checks ...
Where do the Python unit tests go?
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For a file module.py, the unit test should normally be called test_module.py, following Pythonic naming conventions.
There are several commonly accepted places to put test_module.py:
In the same directory as module.py.
In ../tests/test_module.py (at the same level as t...
Parse JSON String into a Particular Object Prototype in JavaScript
...olution below that applies Object.assign(..) recursively that can automatically resolve properties (with a bit of information provided in advance)
– vir us
Dec 8 '17 at 16:13
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How to suppress scientific notation when printing float values?
...cify how many digit after the . you wish to display, this depends on how small is the floating number). See this example:
>>> a = -7.1855143557448603e-17
>>> '{:f}'.format(a)
'-0.000000'
as shown above, default is 6 digits! This is not helpful for our case example, so instead we...
Convert hex string to int in Python
... 16)
With the 0x prefix, Python can distinguish hex and decimal automatically.
>>> print int("0xdeadbeef", 0)
3735928559
>>> print int("10", 0)
10
(You must specify 0 as the base in order to invoke this prefix-guessing behavior; omitting the second parameter means to assume ba...
What does O(log n) mean exactly?
...g that the size of the input affects the growth of the algorithm proportionally...and the same goes for, for example, quadratic time O(n2) etc..even algorithms, such as permutation generators, with O(n!) times, that grow by factorials.
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Bash function to find newest file matching pattern
... Your one liner is giving me right answer, but the "right" way is actually giving me the oldest file. Any idea why?
– NewNameStat
Apr 4 '19 at 21:59
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Case objects vs Enumerations in Scala
... deal with an Option[Currency] type that would clearly indicate there is really a matching problem and "encourage" the user of the API to sort it out him/herself.
To follow up on the other answers here, the main drawbacks of case objects over Enumerations are:
Can't iterate over all instances of t...
Why do I need an IoC container as opposed to straightforward DI code? [closed]
...ain can become nested, and it quickly becomes unwieldy to wire them up manually. Even with factories, the duplication of your code is just not worth it.
IoC containers can be complex, yes. But for this simple case I've shown it's incredibly easy.
Okay, let's justify this even more. Let's say ...
Generating random numbers in Objective-C
...te the S-Boxes via
arc4random_addrandom().
There is no need to call arc4random_stir() before using arc4random(), since arc4random() automatically
initializes itself.
EXAMPLES
The following produces a drop-in replacement for the traditional rand() and random() functions using
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