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How can I convert an image into Base64 string using JavaScript?
...we extract 2 or more canvas as a single PNG?
– techie_28
Jul 11 '16 at 11:48
162
Can you please m...
How to convert R Markdown to PDF?
...ying an output format to the rend function. E.g.,
render("input.Rmd", "pdf_document")
Command-line:
When I run render from the command-line (e.g., using a makefile), I sometimes have issues with pandoc not being found. Presumably, it is not on the search path.
The following answer explains how to...
How can I view the shared preferences file using Android Studio?
...File Explorer, and browse "/data/data/< name of your package >/shared_prefs/". You will find the XML there... and also you can copy it for inspection.
If you have a non-rooted device it's not possible to do that directly from Android Studio. However, you can access the file with adb shell as ...
How can I set the request header for curl?
...;q=0.8,en;q=0.6' \
-e localhost \
-A 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.65 Safari/537.36' \
'http://restapi.some-site.com/getsomething?argument=value&argument2=value'
In this example the referer (-e or --referer in curl) is '...
Easily measure elapsed time
...
//***C++11 Style:***
#include <chrono>
std::chrono::steady_clock::time_point begin = std::chrono::steady_clock::now();
std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now();
std::cout << "Time difference = " << std::chrono::duration_cast<std::c...
How to get current time and date in C++?
...
In C++ 11 you can use std::chrono::system_clock::now()
Example (copied from en.cppreference.com):
#include <iostream>
#include <chrono>
#include <ctime>
int main()
{
auto start = std::chrono::system_clock::now();
// Some computation ...
Loop through Map in Groovy?
... is well documented, take a look here: groovy-lang.org/groovy-dev-kit.html#_iterating_on_maps
– Jack
Oct 24 '15 at 15:26
add a comment
|
...
Way to go from recursion to iteration
...ack, heap does not have memory restrictions. See gribblelab.org/CBootCamp/7_Memory_Stack_vs_Heap.html
– yuqli
Aug 28 '18 at 3:22
|
show 9 mo...
Simplest code for array intersection in javascript
...ns, where n is
* n = MIN(a.length, b.length)
*/
function intersection_destructive(a, b)
{
var result = [];
while( a.length > 0 && b.length > 0 )
{
if (a[0] < b[0] ){ a.shift(); }
else if (a[0] > b[0] ){ b.shift(); }
else /* they're equal */
...
How can I automatically deploy my app after a git push ( GitHub and node.js)?
...ervice Hooks' => 'WebHook URLs'
and add
http://your-domain-name/git_test.php
then create git_test.php
<?php
try
{
$payload = json_decode($_REQUEST['payload']);
}
catch(Exception $e)
{
exit(0);
}
//log the request
file_put_contents('logs/github.txt', print_r($payload, TRUE), FILE...