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Get unique values from a list in python [duplicate]
... original order. If you need that, you should look for an ordered set implementation (see this question for more).
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Conditionally ignoring tests in JUnit 4
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The JUnit way is to do this at run-time is org.junit.Assume.
@Before
public void beforeMethod() {
org.junit.Assume.assumeTrue(someCondition());
// rest of setup.
}
You can do it in a @Before method or in the test itself, but not in an @After meth...
What's the difference between NOT EXISTS vs. NOT IN vs. LEFT JOIN WHERE IS NULL?
It seems to me that you can do the same thing in a SQL query using either NOT EXISTS, NOT IN, or LEFT JOIN WHERE IS NULL. For example:
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Populating a ListView using an ArrayList?
...ay. You can add lists or arrays of custom objects. Override the toString() method of your objects to determine what text will be displayed for the item in the list.
To use something other than TextViews for the array display, for instance ImageViews, or to have some of data besides toString() result...
What are C++ functors and their uses?
I keep hearing a lot about functors in C++. Can someone give me an overview as to what they are and in what cases they would be useful?
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Is there a way to get rid of accents and convert a whole string to regular letters?
...ts and making those letters regular apart from using String.replaceAll() method and replacing letters one by one?
Example:
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URL Encode a string in jQuery for an AJAX request
I'm implementing Google's Instant Search in my application. I'd like to fire off HTTP requests as the user types in the text input. The only problem I'm having is that when the user gets to a space in between first and last names, the space is not encoded as a + , thus breaking the search. How can ...
Custom toast on Android: a simple example
...ose of the root view (null), but in the official docs is present too, if someone can explain why, would be great! developer.android.com/guide/topics/ui/notifiers/toasts#java
– Nestor Perez
Oct 31 '19 at 14:50
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What are the “standard unambiguous date” formats for string-to-date conversion in R?
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This is documented behavior. From ?as.Date:
format: A character string. If not specified, it will try
'"%Y-%m-%d"' then '"%Y/%m/%d"' on the first non-'NA' element,
and give an error if neither works.
as.Da...
How exactly does tail recursion work?
...l recursion. I only don't understand why it doesn't require stack to remember its return address.
8 Answers
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