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Haskell: Where vs. Let
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I found this example from LYHFGG helpful:
ghci> 4 * (let a = 9 in a + 1) + 2
42
let is an expression so you can put a let anywhere(!) where expressions can go.
In other words, in the example above it is not possible to use where to sim...
Fast way of counting non-zero bits in positive integer
... That's clever. Looking this up instead of shooting an answer from the hip is completely appropriate!
– MrGomez
Mar 22 '12 at 20:27
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iPhone - Get Position of UIView within entire UIWindow
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Here is a combination of the answer by @Mohsenasm and a comment from @Ghigo adopted to Swift
extension UIView {
var globalFrame: CGRect? {
let rootView = UIApplication.shared.keyWindow?.rootViewController?.view
return self.superview?.convert(self.frame, to: rootView)
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Showing data values on stacked bar chart in ggplot2
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From ggplot 2.2.0 labels can easily be stacked by using position = position_stack(vjust = 0.5) in geom_text.
ggplot(Data, aes(x = Year, y = Frequency, fill = Category, label = Frequency)) +
geom_bar(stat = "identity") +
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What does JVM flag CMSClassUnloadingEnabled actually do?
...n was still incremented, but at least those temporary classes were removed from memory.
On a more general note, this can be very useful when making heavy use of Java reflection and proxies through java.lang.reflect.Proxy
sh...
How to check if multiple array keys exists
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@Ozh aside from that array_key_exists is slower than isset
– iautomation
Mar 1 '16 at 22:49
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Load Testing with AB … fake failed requests (length)
...hances are your version of ab is behind and -l won't take. You can install from source or via homebrew, but "brew install ab" doesn't work because it's part of the apache package - you can install with "brew install homebrew/apache/ab".
– netpoetica
Jan 5 '15 a...
How is a non-breaking space represented in a JavaScript string?
... is char 0xa0 (160 dec)
x = '';
}
Or you can also create the character from the character code manually it in its Javascript escaped form:
var x = td.text();
if (x == String.fromCharCode(160)) { // Non-breakable space is char 160
x = '';
}
More information about String.fromCharCode is avail...
How to format current time using a yyyyMMddHHmmss format?
...er, the values (lined up with the elements above): 1 2 3 4 5 6 -7 From golang.org/src/time/example_test.go
– kakilangit
Jun 2 '17 at 9:17
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Is it safe to delete an object property while iterating over them?
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From the Javascript/ECMAScript specification (specifically 12.6.4 The for-in Statement):
Properties of the object being enumerated may be deleted during
enumeration. If a property that has not yet been visited during
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