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Creating a dictionary from a csv file?

I am trying to create a dictionary from a csv file. The first column of the csv file contains unique keys and the second column contains values. Each row of the csv file represents a unique key, value pair within the dictionary. I tried to use the csv.DictReader and csv.DictWriter classes, but I...
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Is PHP's count() function O(1) or O(n) for arrays?

Does count() really count the all the elements of a PHP array, or is this value cached somewhere and just gets retrieved? ...
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grep output to show only matching file

What is the option for grep that will allow me only to print the matching file and not the line within a file that matches the criteria? ...
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How to post JSON to PHP with curl

I may be way off base, but I've been trying all afternoon to run the curl post command in this recess PHP framework tutorial. What I don't understand is how is PHP supposed to interpret my POST, it always comes up as an empty array. ...
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Web Config Transformation to add a child element

I've got the following configuration in web.config: 2 Answers 2 ...
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Calculate a percent with SCSS/SASS

I want to set a width in percentage in scss via calculation, but it gives me errors.. 3 Answers ...
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Why is the .bss segment required?

What I know is that global and static variables are stored in the .data segment, and uninitialized data are in the .bss segment. What I don't understand is why do we have dedicated segment for uninitialized variables? If an uninitialised variable has a value assigned at run time, does the varia...
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How can Bash execute a command in a different directory context?

I have a common command that gets called from within very specific directories. There is only one executable sitting in /bin for this program, and the current working directory is very important for running it correctly. The script affects the files that live inside the directory it is run within. ...
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What does flushing the buffer mean?

I am learning C++ and I found something that I can't understand: 3 Answers 3 ...
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LINQ Using Max() to select a single row

I'm using LINQ on an IQueryable returned from NHibernate and I need to select the row with the maximum value(s) in a couple of fields. ...