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Catch a thread's exception in the caller thread in Python
...
concurrent.futures.as_completed
https://docs.python.org/3.7/library/concurrent.futures.html#concurrent.futures.as_completed
The following solution:
returns to the main thread immediately when an exception is called
requires no extra user defined classes ...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
...sizes adding up for each open TCP/IP socket. Here's some additional info: https://serverfault.com/questions/48717/practical-maximum-open-file-descriptors-ulimit-n-for-a-high-volume-system
As for decreased latency via WS vs. HTTP, it's true since there's no more parsing of HTTP headers beyond the i...
Custom toast on Android: a simple example
...e written a builder class to simplify the above purpose; Here is the link:
https://gist.github.com/TheLittleNaruto/6fc8f6a2b0d0583a240bd78313ba83bc
Check the HowToUse.kt in above link.
Output:
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...
Retrieve a Fragment from a ViewPager
...Fragment(0) has to work.
Here is the solution implemented into ViewPager https://gist.github.com/jacek-marchwicki/d6320ba9a910c514424d. If something fail you will see good crash log.
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impr...
Can a decorator of an instance method access the class?
...e._rule_cache[name]):
# wrap the method here
Source: https://github.com/apiguy/flask-classy/blob/master/flask_classy.py
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Proper way to declare custom exceptions in modern Python?
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As of Python 3.8 (2018, https://docs.python.org/dev/whatsnew/3.8.html), the recommended method is still:
class CustomExceptionName(Exception):
"""Exception raised when very uncommon things happen"""
pass
Please don't forget to document, w...
Break promise chain and call a function based on the step in the chain where it is broken (rejected)
...ler: skip handling
Done, chain broke at step 4
Here is some working code
https://jsfiddle.net/8hzg5s7m/3/
If you have specific handling for each step, your wrapper could be something like:
/*
* simple wrapper to check if rejection
* has already been handled
* @param function real error handle...
Multiple controllers with AngularJS in single page app
...DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js">
</script>
<title> New Page </title>
</head>
<body ng-app="mainApp"> <!-- if we remove ng-app t...
How to loop through array in jQuery?
...pName, propVal) {
console.log(propName, propVal);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
javascript loops for array
for loop
for (initialExpression; condition; incrementExpression)
statement
example
var substr =...
What are the differences between Deferred, Promise and Future in JavaScript?
...s method returns a promise of having a value at some point in the future.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
The deferred.promise() method allows an asynchronous function to prevent other code from interfering with the progress or status of its...