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How to extract custom header value in Web API message handler?
...
Try something like this:
IEnumerable<string> headerValues = request.Headers.GetValues("MyCustomID");
var id = headerValues.FirstOrDefault();
There's also a TryGetValues method on Headers you can use if you're not always guaranteed to have access to the head...
How to check if there exists a process with a given pid in Python?
... if the pid is not running, and do nothing otherwise.
import os
def check_pid(pid):
""" Check For the existence of a unix pid. """
try:
os.kill(pid, 0)
except OSError:
return False
else:
return True
...
Abstraction VS Information Hiding VS Encapsulation
...= the object internally,
Example:
In the .NET Framework, the System.Text.StringBuilder class provides an abstraction over a string buffer. This buffer abstraction lets you work with the buffer without regard for its implementation. Thus, you're able to append strings to the buffer without regard f...
Python in Xcode 4+?
...d it out! The steps make it look like it will take more effort than it actually does.
These instructions are for creating a project from scratch. If you have existing Python scripts that you wish to include in this project, you will obviously need to slightly deviate from these instructions.
If yo...
Why is my Spring @Autowired field null?
...yService;
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("test");
ApplicationContext ctx=new ClassPathXmlApplicationContext("spring.xml");
System.out.println("ctx>&...
Invalid URI: The format of the URI could not be determined
...elp to use a different constructor for Uri.
If you have the server name
string server = "http://www.myserver.com";
and have a relative Uri path to append to it, e.g.
string relativePath = "sites/files/images/picture.png"
When creating a Uri from these two I get the "format could not be deter...
Using arrays or std::vectors in C++, what's the performance gap?
...roblem you have to keep track of the size, and you need to delete them manually and do all sort of housekeeping.
Using arrays on the stack is also discouraged because you don't have range checking, and passing the array around will lose any information about its size (array to pointer conversion)....
How do I convert dates in a Pandas data frame to a 'date' data type?
I have a Pandas data frame, one of the column contains date strings in the format YYYY-MM-DD
10 Answers
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Assign variable in if condition statement, good practice or not? [closed]
...he function returns true, but in all other cases (including when an array, string, number, or null is returned) it evaluates to false.
– Ville
Sep 10 '15 at 4:06
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Android: How to stretch an image to the screen width while maintaining aspect ratio?
... always roughly square) and display it so that it fills the screen horizontally, and stretches vertically to maintain the aspect ratio of the image, on any screen size. Here is my (non-working) code. It stretches the image horizontally, but not vertically, so it is squashed...
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