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boost::flat_map and its performance compared to map and unordered_map
... stabilize it).
2) RDTSC accuracy measure
I also recommend doing this:
u64 g_correctionFactor; // number of clocks to offset after each measurement to remove the overhead of the measurer itself.
u64 g_accuracy;
static u64 const errormeasure = ~((u64)0);
#ifdef _MSC_VER
#pragma intrinsic(__rdts...
Is it possible to declare a variable in Gradle usable in Java?
...patelwala.com/myapi/"'
def googleServerKey = '\"87171841097-opu71rk2ps35ibv96ud57g3ktto6ioio.apps.googleusercontent.com"'
android {
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
buildConfigFiel...
What is the C# equivalent of friend? [duplicate]
...
84
The closet equivalent is to create a nested class which will be able to access the outer class'...
Is a url query parameter valid if it has no value?
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84
They're perfectly valid. You could consider them to be the equivalent of the big muscled guy st...
How do I update Node.js?
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1184
I used the following instructions to upgrade from Node.js version 0.10.6 to 0.10.21 on a Mac.
...
How do I decode HTML entities in Swift?
...; 5 &amp; 3 &gt; 2 .</strong> Price: 12 &#x20ac;. &#64; "
let decoded = CFXMLCreateStringByUnescapingEntities(nil, encoded, nil) as String
println(decoded)
// <strong> 4 < 5 & 3 > 2 .</strong> Price: 12 €. @
but this is not available on iOS.
Here i...
Send attachments with PHP Mail()?
...;
$content = file_get_contents($file);
$content = chunk_split(base64_encode($content));
// a random hash will be necessary to send mixed content
$separator = md5(time());
// carriage return type (RFC)
$eol = "\r\n";
// main header (multipart mandatory)
$headers = ...
How to write a large buffer into a binary file in C++, fast?
...gt;
#include <iostream>
#include <cassert>
std::vector<uint64_t> GenerateData(std::size_t bytes)
{
assert(bytes % sizeof(uint64_t) == 0);
std::vector<uint64_t> data(bytes / sizeof(uint64_t));
std::iota(data.begin(), data.end(), 0);
std::shuffle(data.begin(), ...
JS - get image width and height from the base64 code
I have a base64 img encoded that you can find here . How can I get the height and the width of it?
4 Answers
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How to take screenshot of a div with JavaScript?
...0, 100, 100, function(data) {
// in the data variable there is the base64 image
// exmaple for displaying the image in an <img>
$("img#captured").attr("src", "data:image/png;base64,"+data);
});
Keep in mind console.log() and alert() won´t generate output if the size of the image...