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How does “304 Not Modified” work exactly?
My guess, if it's generated by the browser:
2 Answers
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How to navigate through a vector using iterators? (C++)
...ctor of strings instead of the [] operator or the "at" method. From what I understand, iterators can be used to navigate through containers, but I've never used iterators before, and what I'm reading is confusing.
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How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?
I have a FILE * , returned by a call to fopen() . I need to get a file descriptor from it, to make calls like fsync(fd) on it. What's the function to get a file descriptor from a file pointer?
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How do I strip non alphanumeric characters from a string and keep spaces?
I want to create a regex that removes all non-alphanumber characters but keeps spaces. This is to clean search input before it hits the db. Here's what I have so far:
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How can I alter a primary key constraint using SQL syntax?
I have a table that is missing a column in its primary key constraint. Instead of editing it through SQL Server, I want to put this in a script to add it as part of our update scripts.
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How to copy directories in OS X 10.7.3?
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Is there something special with that directory or are you really just asking how to copy directories?
Copy recursively via CLI:
cp -R <sourcedir> <destdir>
If you're only seeing the files under the sourcedir being copied (instead of sourcedir as well), that's happe...
How to convert a private key to an RSA private key?
Let me explain my question first. I bought a certificate from a CA and used the following format to generate the csr and the private key:
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How to make Sequelize use singular table names
I have an model called User but Sequelize looks for the table USERS whenever I am trying to save in the DB. Does anyone know how to set Sequelize to use singular table names? Thanks.
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How to apply an XSLT Stylesheet in C#
I want to apply an XSLT Stylesheet to an XML Document using C# and write the output to a File.
4 Answers
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Check if value already exists within list of dictionaries?
... does not exist
The part in parentheses is a generator expression that returns True for each dictionary that has the key-value pair you are looking for, otherwise False.
If the key could also be missing the above code can give you a KeyError. You can fix this by using get and providing a default v...