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How to break out of nested loops?
...complicated. One possibility is to pass the variable to the inner function by reference (pointer), but this may confuse the compiler optimization and produce unnecessary extra code. Another possibility is to make such variables static at the module level, but that is not very beautiful, either. C is...
How to play a notification sound on websites?
...t="true" loop="false" src="' + filename +'.mp3">';
document.getElementById("sound").innerHTML='<audio autoplay="autoplay">' + mp3Source + oggSource + embedSource + '</audio>';
}
<button onclick="playSound('bing');">Play</button>
<div id="sound"></div>
Bro...
Standard deviation of a list
...dev(data, ddof=0):
"""Calculates the population standard deviation
by default; specify ddof=1 to compute the sample
standard deviation."""
n = len(data)
if n < 2:
raise ValueError('variance requires at least two data points')
ss = _ss(data)
pvar = ss/(n-ddof)
...
What is the purpose of double curly braces in React's JSX syntax?
... you! Unfortunately I'm out in California these days but feel free to drop by the #reactjs IRC room on freenode and I'd be happy to answer questions.
– Sophie Alpert
Mar 27 '14 at 4:39
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In Java, is there a way to write a string literal without having to escape quotes?
...r \
| EscapeSequence
As you can see a StringLiteral can just be bound by " and cannot contain special character without escapes..
A side note: you can embed Groovy inside your project, this will extend the syntax of Java allowing you to use '''multi line string ''', ' "string with single quote...
Why, Fatal error: Class 'PHPUnit_Framework_TestCase' not found in …?
... I don't know such a thing. I got same error then I explore answer by cracking the package
– Jijesh Cherrai
Dec 21 '18 at 12:41
add a comment
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How can I set focus on an element in an HTML form using JavaScript?
...orm with a text box in it. How do I go about setting focus to the text box by default?
9 Answers
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If strings are immutable in .NET, then why does Substring take O(n) time?
...name will be a couple dozen. String allocation and memory copying of fifty bytes is astonishingly fast on modern hardware. That making a new data structure that consists of a pointer to the middle of an existing string plus a length is also astonishingly fast is irrelevant; "fast enough" is by defin...
Map implementation with duplicate keys
...a have several implementations for that. Multimaps allow for multiple keys by maintaining a collection of values per key, i.e. you can put a single object into the map, but you retrieve a collection.
If you can use Java 5, I would prefer Guava's Multimap as it is generics-aware.
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Copying text outside of Vim with set mouse=a enabled
...
There is also an option to use block select by pressing <kbd>ctrl</kbd> + <kbd>shift</kbd> + left mouse button to start block selection. Mouse middle button pastes copied content into other window.
– micrub
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