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Regular expression to return text between parenthesis
... what if there is no '(' and ')'? you will get s[0:-1]. Which means you will get whatever in 's' :\. It will be good if you check that the string has parenthesis first.
– Omar
May 26 '16 at 1:21
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How to define @Value as optional
...ue is not required?
Working on the assumption that by 'not required' you mean null then...
You have correctly noted that you can supply a default value to the right of a : character. Your example was @Value("${myValue:DEFAULT}").
You are not limited to plain strings as default values. You can u...
Why does Java's hashCode() in String use 31 as a multiplier?
...it is not even an unordered pair, as key and value have entirely different meaning. Yes, that implies that Map.of(42, 42).hashCode() or Map.of("foo", "foo", "bar", "bar").hashCode(), etc, are predictably zero. So don’t use maps as keys for other maps…
– Holger
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Target elements with multiple classes, within one rule
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what do you mean in .border-blue .background { ... } is child? i tried this and this does not work
– Eliav Louski
Apr 16 at 20:26
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Numpy `logical_or` for more than two arguments
...ti-dimensional array instead of separate arrays—in fact, that's how it's meant to be used:
>>> xyz = np.array((x, y, z))
>>> xyz
array([[ True, True, False, False],
[ True, False, True, False],
[False, False, False, False]], dtype=bool)
>>> np.logical_or...
Display current date and time without punctuation
...give it a format parameter, starting with a +.
You can probably guess the meaning of the formatting symbols I used:
%Y is for year
%m is for month
%d is for day
... and so on
You can find this, and other formatting symbols in man date.
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What does it mean to “program to an interface”?
I have seen this mentioned a few times and I am not clear on what it means. When and why would you do this?
32 Answers
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The Difference Between Deprecated, Depreciated and Obsolete [closed]
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You are correct.
Deprecated means that it is still in use, but only for historical purposes and it will be removed probably in the next big release. It is recommended that you do not use deprecated functions or features - even if they are present in the...
How to increase space between dotted border dots
... 4px; /* Use letter-spacing to increase space between dots*/
}
This also means that you can add text-shadow to the dots, gradients etc. Anything you want...
Well, it works really great for horizontal borders. If you need vertical ones, you may specify a class for another hr and use the CSS3 rotat...
When does System.getProperty(“java.io.tmpdir”) return “c:\temp”
...Please, refer to my answer and let me know if you didn't understood what I mean.
– Zakaria
Apr 18 '15 at 11:43
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