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Base64: What is the worst possible increase in space usage?
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Base64 encodes each set of three bytes into four bytes. In addition the output is padded to always be a multiple of four.
This means that the size of the base-64 representation of a string of size n is:
ceil(n / 3) * 4
So, for a 16kB array, ...
Weighted random numbers
...#include <type_traits>
#include <cassert>
int main()
{
// Set up distribution
double interval[] = {1, 2, 3, 4};
double weights[] = { .90, .56, .04};
std::piecewise_constant_distribution<> dist(std::begin(interval),
...
How can you profile a Python script?
...ere is 3 steps to help. 1. Install via pip, 2. Install GraphViz via exe 3. Set up path variables to GraphViz directory 4. Figure out how to fix all the other errors. 5. Figure out where it saves the png file?
– marsh
Mar 24 '16 at 17:07
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Android Fragments and animation
...ace.
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.setCustomAnimations(R.anim.slide_in_left, R.anim.slide_out_right);
DetailsFragment newFragment = DetailsFragment.newInstance();
ft.replace(R.id.details_fragment_container, newFragment, "detailFragment");
// Start the anima...
Correct file permissions for WordPress [closed]
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When you setup WP you (the webserver) may need write access to the files. So the access rights may need to be loose.
chown www-data:www-data -R * # Let Apache be owner
find . -type d -exec chmod 755 {} \; # Change directory permiss...
Does the JVM prevent tail call optimizations?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Outlook autocleaning my line breaks and screwing up my email format
...tting e-mails as html. You may still have the end-user issue of having to set the client to allow html format, but they are usually more familiar with this since so many e-mails do come html formatted. You also have a little more work on your end adding the html tags, but the end result is much mo...
How to get an enum which is created in attrs.xml in code
...he enum entries for my custom attribute. Now I want to create an method to set this value programmatically, but I can not access the enum.
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Is 161803398 A 'Special' Number? Inside of Math.Random()
...osen to be a nothing up my sleeve number that prevents seeds with few bits set (perhaps a common choice) from screwing up the random number generator (instead of some magical property of phi).
– David Eisenstat
May 15 '14 at 21:09
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How to wait in a batch script? [duplicate]
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What about:
@echo off
set wait=%1
echo waiting %wait% s
echo wscript.sleep %wait%000 > wait.vbs
wscript.exe wait.vbs
del wait.vbs
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