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Is a RelativeLayout more expensive than a LinearLayout?
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How can I remove all objects but one from the workspace in R?
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Here is a simple construct that will do it, by using setdiff:
rm(list=setdiff(ls(), "x"))
And a full example. Run this at your own risk - it will remove all variables except x:
x <- 1
y <- 2
z <- 3
ls()
[1] "x" "y" "z"
rm(list=setdiff(ls(), "x"))
ls()
[1] "x"
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Check for array not empty: any?
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What is the best algorithm for overriding GetHashCode?
In .NET, the GetHashCode method is used in a lot of places throughout the .NET base class libraries. Implementing it properly is especially important to find items quickly in a collection or when determining equality.
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Callback when CSS3 transition finishes
... var self = this;
// Checks if correct animation has ended
var setAnimationListener = function() {
self.one(
"webkitAnimationEnd oanimationend msAnimationEnd animationend",
function(e) {
if(
e.originalEvent.animationName...
PHP DOMDocument loadHTML not encoding UTF-8 correctly
...ng problem, because I defined utf8 in the HTML document (with <meta charset="UTF-8" />) but that has no effect, it seems to need the <?xml part, which is totally unintuitive.
– iquito
Apr 20 '16 at 14:00
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How do you make a deep copy of an object?
It's a bit difficult to implement a deep object copy function. What steps you take to ensure the original object and the cloned one share no reference?
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What is the difference between a .xib file and a .storyboard?
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What do Clustered and Non clustered index actually mean?
... values 1 - 100 in random order
DECLARE @C1 AS CURSOR,
@X AS INT
SET @C1 = CURSOR FAST_FORWARD
FOR SELECT number
FROM master..spt_values
WHERE type = 'P'
AND number BETWEEN 1 AND 100
ORDER BY CRYPT_GEN_RANDOM(4)
OPEN @C1;
FETCH NEXT FROM @C1 INTO @X;
WHILE @@F...
Should I use an exception specifier in C++?
In C++, you can specify that a function may or may not throw an exception by using an exception specifier. For example:
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