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How do I update pip itself from inside my virtual environment?
...nd like that: python -m pip install --upgrade pip to avoid running pip.exe from scripts directory.
– bialix
Feb 19 '14 at 14:47
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Can't subtract offset-naive and offset-aware datetimes
... have a timezone aware timestamptz field in PostgreSQL. When I pull data from the table, I then want to subtract the time right now so I can get it's age.
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Why doesn't Java offer operator overloading?
Coming from C++ to Java, the obvious unanswered question is why didn't Java include operator overloading?
16 Answers
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Importing from a relative path in Python
...r than an absolute import. The '..' means, go to the directory above me:
from ..Common import Common
As a caveat, this will only work if you run your python as a module, from outside of the package. For example:
python -m Proj
Original hacky way
This method is still commonly used in some...
How to send a simple string between two programs using pipes?
...yfifo";
char buf[MAX_BUF];
/* open, read, and display the message from the FIFO */
fd = open(myfifo, O_RDONLY);
read(fd, buf, MAX_BUF);
printf("Received: %s\n", buf);
close(fd);
return 0;
}
Note: Error checking was omitted from the above code for simplicity.
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Behaviour of final static method
... be redirected to the one in B.
The keyword final will disable the method from being hidden. So they cannot be hidden and an attempt to do so will result in a compiler error.
Hope this helps.
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any tool for java object to object mapping? [closed]
... Dozer is a Java Bean to Java Bean
mapper that recursively copies data
from one object to another. Typically,
these Java Beans will be of different
complex types.
Dozer supports simple property
mapping, complex type mapping,
bi-directional mapping,
implicit-explicit mapping, as we...
How to create PDF files in Python [closed]
I'm working on a project which takes some images from user and then creates a PDF file which contains all of these images.
...
Kill child process when parent process is killed
I'm creating new processes using System.Diagnostics.Process class from my application. I want this processes to be killed when/if my application has crashed. But if I kill my application from Task Manager, child processes are not killed. Is there any way to make child processes dependent on ...
How to decide when to use Node.js?
...ited for applications where you'd like to maintain a persistent connection from the browser back to the server. Using a technique known as "long-polling", you can write an application that sends updates to the user in real time. Doing long polling on many of the web's giants, like Ruby on Rails or D...