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How do I declare and initialize an array in Java?
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You can either use array declaration or array literal (but only when you declare and affect the variable right away, array literals cannot be used for re-assigning an array).
For primitive types:
int[] myIntArray = new int[3];
int[] myIntArray = {1, 2, 3};
i...
What do ellipsis […] mean in a list?
...... and so on. The [...] notation is a way to let you know this, and to inform that it can't be represented! Take a look at @6502's answer to see a nice picture showing what's happening.
Now, regarding the three new items after your edit:
This answer seems to cover it
Ignacio's link describes som...
Filter Java Stream to 1 and only 1 element
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Create a custom Collector
public static <T> Collector<T, ?, T> toSingleton() {
return Collectors.collectingAndThen(
Collectors.toList(),
list -> {
if (list.size() != 1) {
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How do I strip all spaces out of a string in PHP? [duplicate]
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Do you just mean spaces or all whitespace?
For just spaces, use str_replace:
$string = str_replace(' ', '', $string);
For all whitespace (including tabs and line ends), use preg_replace:
$string = preg_replace('/\s+/', '', $string);
(From her...
How to use a link to call JavaScript?
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<a onclick="jsfunction()" href="#">
or
<a onclick="jsfunction()" href="javascript:void(0);">
Edit:
The above response is really not a good solution, having learned a lot about JS since I initially posted. See EndangeredMassa's answer below for the b...
Python's time.clock() vs. time.time() accuracy?
Which is better to use for timing in Python? time.clock() or time.time()? Which one provides more accuracy?
16 Answers
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Prevent segue in prepareForSegue method?
Is it possible to cancel a segue in the prepareForSegue: method?
10 Answers
10
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Is there “0b” or something similar to represent a binary number in Javascript
I know that 0x is a prefix for hexadecimal numbers in Javascript. For example, 0xFF stands for the number 255.
10 Answe...
@property retain, assign, copy, nonatomic in Objective-C
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The article linked to by MrMage is no longer working. So, here is what I've learned in my (very) short time coding in Objective-C:
nonatomic vs. atomic
- "atomic" is the default. Always use "nonatomic". I don't know why, but the book I read said there is "rarely a reaso...
Why does NULL = NULL evaluate to false in SQL server
...ays evaluates to false. This is counterintuitive and has caused me many errors. I do understand the IS NULL and IS NOT NULL keywords are the correct way to do it. But why does SQL server behave this way?
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