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SparseArray vs HashMap
...<V> values;
}
Class = 12 + 8 * 4 = 48 bytes
Entry = 32 + 16 + 16 = 64 bytes
Array = 20 + 1000 * 64 = 64024 bytes
Total = 64,136 bytes
Source: Android Memories by Romain Guy from slide 90.
The numbers above are the amount of memory (in bytes) allocated on heap by JVM.
They may vary dependin...
Forward an invocation of a variadic function in C
...Rosenfield
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What is the difference between Int and Integer?
...ay
recognise the "bignum" type here.
"Int" is the more common 32 or 64 bit
integer. Implementations vary,
although it is guaranteed to be at
least 30 bits.
Source: The Haskell Wikibook. Also, you may find the Numbers section of A Gentle Introduction to Haskell useful.
...
What is a Portable Class Library?
...
84
UPDATE Oct 9 2017: Article comparing/constrasting .NET Core/Std/PCL
UPDATE Nov 23 2016: Article...
How to create a unique index on a NULL column?
...
84
create unique index UIX on MyTable (Column1) where Column1 is not null
– Jørn Schou-Rode
Dec 2 '10 ...
Comparing two byte arrays in .NET
...
akuaku
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Generate a Hash from string in Javascript
...ained here, we can extend the hash bit size using this trick:
function hash64(str) {
var h1 = hash32(str); // returns 32 bit (as 8 byte hex string)
return h1 + hash32(h1 + str); // 64 bit (as 16 byte hex string)
}
Use it with care and don't expect too much though.
...
Get Unix Epoch Time in Swift
...-bit numbers won't be usable for the Unix timestamp and they'll have to be 64-bit.
let seconds = Date().timeIntervalSince1970
let milliseconds = Date().timeIntervalSince1970 * 1_000
let microseconds = Date().timeIntervalSince1970 * 1_000_000
An extension:
extension Date {
var unixTimestamp: ...
jQuery: Return data after ajax call success [duplicate]
...9
rsprsp
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How to style a checkbox using CSS
...e="checkbox"]:checked:after {
background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAcAAAAHCAQAAABuW59YAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAIGNIUk0AAHolAACAgwAA+f8AAIDpAAB1MAAA6mAAADqYAAAXb5JfxUYAAAB2SURBVHjaAGkAlv8A3QDyAP0A/QD+Dam3W+kCAAD8APYAAgTVZaZCGwwA5wr0AvcA+Dh+7UX/x24AqK3Wg/8nt6...