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Why is iterating through a large Django QuerySet consuming massive amounts of memory?
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Nate C was close, but not quite.
From the docs:
You can evaluate a QuerySet in the following ways:
Iteration. A QuerySet is iterable, and it executes its database query the first time you iterate over it. For example, this will print the headline...
Reading a key from the Web.Config using ConfigurationManager
I am trying to read the keys from the Web.config file in a different layer than the web layer (Same solution)
10 Answers
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How do I remove all non alphanumeric characters from a string except dash?
How do I remove all non alphanumeric characters from a string except dash and space characters?
13 Answers
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How to log cron jobs?
...* * myjob.sh >> /var/log/myjob.log 2>&1
will log all output from the cron job to /var/log/myjob.log
You might use mail to send emails. Most systems will send unhandled cron job output by email to root or the corresponding user.
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Adding and removing style attribute from div with jquery
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You cannot remove the position or top attribute from the voltaic_holder element, because it does not have thos attributes. Those are css properties defined in the style attribute.
– Peter Olson
Mar 22 '11 at 17:02
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Is there a Rake equivalent in Python?
...hon (2.6+ and 3.3+) task execution tool & library, drawing inspiration from various sources to arrive at a powerful & clean feature set.
Below are a few descriptive statements from Invoke's website:
Invoke is a Python (2.6+ and 3.3+) task execution tool & library, drawing inspiration f...
Curious null-coalescing operator custom implicit conversion behaviour
...before code generation -- we reduce the expression
result = Foo() ?? y;
from the example above to the moral equivalent of:
A? temp = Foo();
result = temp.HasValue ?
new int?(A.op_implicit(Foo().Value)) :
y;
Clearly that is incorrect; the correct lowering is
result = temp.HasValue ? ...
How to export a Vagrant virtual machine to transfer it
...his, I'll call it dirty way and clean way:
1. The dirty way
Create a box from your current virtual environment, using vagrant package command:
http://docs.vagrantup.com/v2/cli/package.html
Then copy the box to the other pc, add it using vagrant box add and run it using vagrant up as usual.
Keep...
How to determine CPU and memory consumption from inside a process?
I once had the task of determining the following performance parameters from inside a running application:
9 Answers
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How to validate an Email in PHP?
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Stay away from regex and filter_var() solutions for validating email. See this answer: https://stackoverflow.com/a/42037557/953833
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