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Copy array items into another array
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Found an elegant way from MDN
var vegetables = ['parsnip', 'potato'];
var moreVegs = ['celery', 'beetroot'];
// Merge the second array into the first one
// Equivalent to vegetables.push('celery', 'beetroot');
Array.prototype.push.apply(vegetab...
How to toggle a value in Python
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Solution using subtraction
If the values are numerical, then subtraction from the total is a simple and fast way to toggle values:
>>> A = 5
>>> B = 3
>>> total = A + B
>>> x = A
>>> x = total - x # toggle
>>> x
3
>>> x = total - x...
How do I save a String to a text file using Java?
In Java, I have text from a text field in a String variable called "text".
24 Answers
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Check if multiple strings exist in another string
...y(x in a_string for x in matches):
Similarly to check if all the strings from the list are found, use all instead of any.
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Create singleton using GCD's dispatch_once in Objective-C
... @hooleyhoop Yes, in its documentation. "If called simultaneously from multiple threads, this function waits synchronously until the block has completed."
– Kevin
Aug 17 '13 at 22:31
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What's HTML character code 8203?
...o know this is the solution they are looking for when trying to clean text from quirky systems. when i say quirky i mean Microsoft 360 free website garbage! i'm very good with regular expressions having years of experience, but it just doesn't really matter when you encounter something you don't kno...
Can I scroll a ScrollView programmatically in Android?
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The answer from Pragna does not work always, try this:
mScrollView.post(new Runnable() {
public void run() {
mScrollView.scrollTo(0, mScrollView.getBottom());
}
});
or
mScrollView.post(new Runnable() ...
rspec 3 - stub a class method
I am upgrading from rspec 2.99 to rspec 3.0.3 and have converted instance methods to use allow_any_instance_of , but haven't figured out how to stub a class method. I have code like this:
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PHPMailer character encoding issues
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I work myself this way
$mail->FromName = utf8_decode($_POST['name']);
http://php.net/manual/en/function.utf8-decode.php
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What is the zero for string?
...To pass a zero string in stringID, use
k := NewKey(c, "kind", "", 0, p)
From the specification :
When memory is allocated to store a value, either through a
declaration or a call of make or new, and no explicit initialization
is provided, the memory is given a default initialization. Each...