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Proper use of beginBackgroundTaskWithExpirationHandler
...endTaskWithKey:taskKey];
Optionally, if you want to provide a completion block that does something beyond ending the task (which is built in) you can call:
NSUInteger taskKey = [[BackgroundTaskManager sharedTasks] beginTaskWithCompletionHandler:^{
//do stuff
}];
Relevant source code availa...
Heroku push rejected, no Cedar-supported app detected
... missing some key file that it uses to identify your app (and its type).
php: index.php
python: requirements.txt
ruby: Gemfile # note the capitalization
node: package.json
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Adding header for HttpURLConnection
...e use headers. I have to validate some credentials from android I am using php on xammp. how should i go for it. as i don't know how to write php code with headers
– Pankaj Nimgade
Feb 17 '15 at 8:00
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Check element CSS display with JavaScript
Is it possible to check if an element's CSS display == block or none using JavaScript?
9 Answers
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When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
Can someone tell me when and where I need to use begin and end blocks in SQL Server?
Also, what exactly does the Go keyword do?
...
How to measure time taken between lines of code in python?
...ll show the following after the indented line(s) finishes executing:
Code block took: x.xxx ms
UPDATE: You can now get the class with pip install linetimer and then from linetimer import CodeTimer. See this GitHub project.
The code for above class:
import timeit
class CodeTimer:
def __init...
How to specify table's height such that a vertical scroll bar appears?
... appears to be because <table> elements are not rendered as display: block by default (they actually have their own display type). You can force the overflow property to work by setting the <table> element to be a block type:
table {
display: block;
height: 500px;
overflow-y: scro...
JavaScript hide/show element
...owStuff(id, text, btn) {
document.getElementById(id).style.display = 'block';
// hide the lorem ipsum text
document.getElementById(text).style.display = 'none';
// hide the link
btn.style.display = 'none';
}
<td class="post">
<a href="#" onclick="showStuff('ans...
Formatting numbers (decimal places, thousands separators, etc) with CSS
...avascript once it's in the DOM or format it via your language server-side (PHP/ruby/python etc.)
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A CORS POST request works from plain JavaScript, but why not with jQuery?
...: x-requested-with, x-requested-by
So to put it all together, here is my PHP:
// * wont work in FF w/ Allow-Credentials
//if you dont need Allow-Credentials, * seems to work
header('Access-Control-Allow-Origin: http://www.example.com');
//if you need cookies or login etc
header('Access-Control-Al...