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Python: How to get stdout after running os.system? [duplicate]
...e a way to do this in Jupyter Notebook? Looks like it only return an empty string.
– Louis Yang
Mar 18 at 1:17
@LouisY...
JSON serialization of Google App Engine models
...rt datetime
import time
SIMPLE_TYPES = (int, long, float, bool, dict, basestring, list)
def to_dict(model):
output = {}
for key, prop in model.properties().iteritems():
value = getattr(model, key)
if value is None or isinstance(value, SIMPLE_TYPES):
output[key...
Differences between contentType and dataType in jQuery ajax function
...ntType (default: 'application/x-www-form-urlencoded; charset=UTF-8')
Type: String
When sending data to the server, use this content type. Default is "application/x-www-form-urlencoded; charset=UTF-8", which is fine for most cases. If you explicitly pass in a content-type to $.ajax(), then it'll alwa...
Remove duplicate values from JS array [duplicate]
...linear time, but has at least two drawbacks:
since hash keys can only be strings or symbols in JavaScript, this code doesn't distinguish numbers and "numeric strings". That is, uniq([1,"1"]) will return just [1]
for the same reason, all objects will be considered equal: uniq([{foo:1},{foo:2}]) wil...
How to check for an undefined or null variable in JavaScript?
...
And also note that typeof returns a string. So var myVar; typeof(myVar)==undefined returns false not true.
– rism
Nov 28 '15 at 7:57
...
Add legend to ggplot2 line plot
...t each line is given a color by mapping the colour aesthetic to a constant string. Choosing the string which is what you want to appear in the legend is the easiest. The fact that in this case it is the same as the name of the y variable being plotted is not significant; it could be any set of strin...
Disable cache for some images
...ls like a hack but is fairly portable is to add a randomly generated query string to each request for the dynamic image.
So, for example -
<img src="image.png" />
Would become
<img src="image.png?dummy=8484744" />
Or
<img src="image.png?dummy=371662" />
From the point of ...
Design RESTful query API with a long list of query parameters [closed]
...have accepted the practice that a GET with too long or too complex a query string (e.g. query strings don't handle nested data easily) can be sent as a POST instead, with the complex/long data represented in the body of the request.
Look up the spec for POST in the HTTP spec. It's incredibly broad....
Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
... in Visual Studio 2017 see the end of this answer)
Consider this code:
String s = null;
Console.WriteLine(s.Length);
This will throw a NullReferenceException in the second line and you want to know why .NET doesn't tell you that it was s that was null when the exception was thrown.
To underst...
What is the difference between inversedBy and mappedBy?
...eratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="task", type="string", length=255)
*/
private $task;
/**
* @var \DateTime
*
* @ORM\Column(name="dueDate", type="datetime")
*/
private $dueDate;
...