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Passing multiple error classes to ruby's rescue clause in a DRY fashion
...u can structure your inheritance hierarchy such that they will all inherit from the same parent class and then rescue only the parent class.
For example I had three exceptions: FileNamesMissingError,InputFileMissingError, and OutputDirectoryError that I wanted to rescue with one statement. I made a...
Simulate delayed and dropped packets on Linux
...ys in increments of 10 ms. On 2.6, the value is a configuration parameter from 1000 to 100 Hz.
Later examples just change parameters without reloading the qdisc
Real wide area networks show variability so it is possible to add random variation.
# tc qdisc change dev eth0 root netem dela...
jQuery: Adding two attributes via the .attr(); method
...
WARNING: When setting the 'class' attribute, you must always use quotes!
From the jQuery documentation (Sep 2016) for .attr:
Attempting to change the type attribute on an input or button element created via document.createElement() will throw an exception on Internet Explorer 8 or older.
Edit:
F...
Is there a recommended way to return an image using ASP.NET Web API
...
If you are returning a file from the hard drive, I think it would be better performance to use a FileStream, like this (see accepted answer in this question): stackoverflow.com/questions/11125535/…
– John Gilmer
...
How to find the foreach index?
.... I think it's better to just create a variable outside the loop and count from there, increasing it with vatiable++; on each iteration. The traditional way, but has always worked.
– Jomar Sevillejo
Oct 30 '15 at 1:22
...
Is there a DesignMode property in WPF?
...I class is initiated by the designer (like if I create a DataContext class from XAML). Then the approach from this MSDN article is helpful:
// Check for design mode.
if ((bool)(DesignerProperties.IsInDesignModeProperty.GetMetadata(typeof(DependencyObject)).DefaultValue))
{
//in Design mode
}
...
How to convert nanoseconds to seconds using the TimeUnit enum?
How to convert a value from nanoseconds to seconds?
7 Answers
7
...
How to overcome “datetime.datetime not JSON serializable”?
...org/python/1.10.1/api/bson/json_util.html
Example usage (serialization):
from bson import json_util
import json
json.dumps(anObject, default=json_util.default)
Example usage (deserialization):
json.loads(aJsonString, object_hook=json_util.object_hook)
Django
Django provides a native Djang...
Call one constructor from another
...method other than the constructor example init(). You can call this method from any of your constructors.
– Abdullah Shoaib
Aug 4 '16 at 7:35
...
Centering the pagination in bootstrap
...
Bootstrap has added a new class from 3.0.
<div class="text-center">
<ul class="pagination">
<li><a href="?p=0" data-original-title="" title="">1</a></li>
<li><a href="?p=1" data-original-tit...