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Finding all objects that have a given property inside a collection [duplicate]
I have some complicated object, such as a Cat, which has many properties, such as age, favorite cat food, and so forth.
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How do I get the object if it exists, or None if it does not exist?
When I ask the model manager to get an object, it raises DoesNotExist when there is no matching object.
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How to replace all occurrences of a string?
I have this string:
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How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
I have a innoDB table which records online users. It gets updated on every page refresh by a user to keep track of which pages they are on and their last access date to the site. I then have a cron that runs every 15 minutes to DELETE old records.
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How to make gradient background in android
I want to create gradient background where the gradient is in the top half and there's a solid color in the bottom half, like in this image below:
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IE7 Z-Index Layering Issues
I've isolated a little test case of IE7's z-index bug, but don't know how to fix it.
I have been playing with z-index all day long.
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PostgreSQL: How to pass parameters from command line?
I have a somewhat detailed query in a script that uses ? placeholders. I wanted to test this same query directly from the psql command line (outside the script). I want to avoid going in and replacing all the ? with actual values, instead I'd like to pass the arguments after the query.
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How do you make sure email you send programmatically is not automatically marked as spam?
This is a tricky one and I've always relied on techniques, such as permission-based emails (i.e. only sending to people you have permission to send to) and not using blatantly spamish terminology.
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What are unit tests, integration tests, smoke tests, and regression tests?
What are unit tests, integration tests, smoke tests, and regression tests? What are the differences between them and which tools can I use for each of them?
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How to get the CPU Usage in C#?
I want to get the overall total CPU usage for an application in C#. I've found many ways to dig into the properties of processes, but I only want the CPU usage of the processes, and the total CPU like you get in the TaskManager.
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