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Java system properties and environment variables
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@KanagaveluSugumar Yes, you need to restart: Environment variable settings are read from the environment on start up. i.e. System.getenv(String name) does not dynamically read the value from the system at call time.
– Bohemian♦
...
Javascript call() & apply() vs bind()?
...ss a member method for, but still want the context to be the instance that started the async action.
A simple, naive implementation of bind would be like:
Function.prototype.bind = function(ctx) {
var fn = this;
return function() {
fn.apply(ctx, arguments);
};
};
There is mor...
notifyDataSetChanged example
...ainActivity.class);
ina.putExtra("stra", values1);
startActivity(ina);// This is the code to start the parent activity of my action bar tab(fragment).
}
}
This activity would return some data to FragmentTab2 and it would directly update my listview in FragmentTab2.
Hop...
Pure JavaScript Send POST Data Without a Form
....__init__(self)
self.i = i
self.daemon = True
self.start()
def run(self):
httpd = BaseHTTPServer.HTTPServer(addr, Handler, False)
# Prevent the HTTP server from re-binding every handler.
# https://stackoverflow.com/questions/46210672/
http...
No empty constructor when create a service
...non static classes, the outer class must be instantiated first. Now if you start a service, the instance is created by the system, which won´t know that it has to make an instance from the outer class first, so it will crash. But the error is really misleading in that case. take a look at stackover...
R object identification
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I usually start out with some combination of:
typeof(obj)
class(obj)
sapply(obj, class)
sapply(obj, attributes)
attributes(obj)
names(obj)
as appropriate based on what's revealed. For example, try with:
obj <- data.frame(a=1:26...
Is it possible to create a remote repo on GitHub from the CLI without opening browser?
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To make the repo private from the start, use: curl -u 'USER' https://api.github.com/user/repos -d '{"name":"REPO", "private":"true"}'
– Joe Fletcher
Mar 21 '13 at 4:05
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How to randomize (shuffle) a JavaScript array?
... optimal efficiency, ensuring the random pick is simplified (it can always start at 0), and thereby skipping the final element.
Algorithm runtime is O(n). Note that the shuffle is done in-place so if you don't want to modify the original array, first make a copy of it with .slice(0).
EDIT: Updat...
Multiple file upload in php
...ding:
<html>
<title>Upload</title>
<?php
session_start();
$target=$_POST['directory'];
if($target[strlen($target)-1]!='/')
$target=$target.'/';
$count=0;
foreach ($_FILES['file']['name'] as $filename)
{
...
Manually map column names with class properties
...rifying! And a big thank you for Dapper, a wonderful micro ORM that I just started using for a tiny project along with Npgsql on ASP.NET Core!
– victorvartan
Aug 11 '16 at 12:01
2
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