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Java Look and Feel (L&F) [closed]
...alog which allows the user of your application to change the Look And Feel based on the user's systems. Alternatively, if you can store the wanted Look And Feel's on your application, then they could be "portable", which is the desired result.
public void changeLookAndFeel() {
List<S...
python dataframe pandas drop column using int
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You need to identify the columns based on their position in dataframe. For example, if you want to drop (del) column number 2,3 and 5, it will be,
df.drop(df.columns[[2,3,5]], axis = 1)
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Insert HTML with React Variable Statements (JSX)
...r the simplest answer especially if the HTML is written by you and dynamic based on user input. You can quite literally set var myHtml = <p>Some text</p>; and it works
– pat8719
May 15 '19 at 13:45
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Compare given date with today
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One caution based on my experience, if your purpose only involves date then be careful to include the timestamp. For example, say today is "2016-11-09". Comparison involving timestamp will nullify the logic here. Example,
// input
$var...
When monkey patching an instance method, can you call the overridden method from the new implementat
...s a bit tricky. Basically, in Ruby (and in pretty much all single-dispatch based OO languages), a method is bound to a specific receiver object, called self in Ruby. In other words: a method always knows what object it was called on, it knows what its self is. But, we grabbed the method directly fro...
Cannot add or update a child row: a foreign key constraint fails
...date a row to table2 that does not have a valid value for the UserID field based on the values currently stored in table1. If you post some more code I can help you diagnose the specific cause.
share
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pytest: assert almost equal
...the testing structure.
Get assertions, ignore rest of unittest.TestCase
(based on this answer)
import unittest
assertions = unittest.TestCase('__init__')
Make some assertions
x = 0.00000001
assertions.assertAlmostEqual(x, 0) # pass
assertions.assertEqual(x, 0) # fail
# AssertionError: 1e-08...
Converting a String to DateTime
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Since you are handling 24-hour based time and you have a comma separating the seconds fraction, I recommend that you specify a custom format:
DateTime myDate = DateTime.ParseExact("2009-05-08 14:40:52,531", "yyyy-MM-dd HH:mm:ss,fff",
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How to convert a String into an ArrayList?
... ArrayList in the first place. Very often, you're going to filter the list based on additional criteria, for which a Stream is perfect. You may want a set; you may want to filter them by means of another regular expression, etc. Java 8 provides this very useful extension, by the way, which will wor...
How can I access getSupportFragmentManager() in a fragment?
...) // This will also give you the SupportFragmentManager or FragmentManager based on which Fragment class you have extended - android.support.v4.app.Fragment OR android.app.Fragment.
OR
getActivity().getSupportFragmentManager();
in your Fragment's onActivityCreated() method and any method that i...