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Given an RGB value, how do I create a tint (or shade)?

... an RGB value, like 168, 0, 255 , how do I create tints (make it lighter) and shades (make it darker) of the color? 3 Answ...
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Insert spaces between words on a camel-cased token [duplicate]

... Slightly better regex that handles acronyms correctly: @"(\B[A-Z]+?(?=[A-Z][^A-Z])|\B[A-Z]+?(?=[^A-Z]))" – Aviad P. Dec 24 '12 at 10:01 ...
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How to squash all git commits into one?

... keep all the commit messages you could first do git log > original.log and then edit that for your initial commit message in the new repository: rm -rf .git git init git add . git commit or git log > original.log # edit original.log as desired rm -rf .git git init git add . git commit -F ...
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Progress indicator during pandas operations

I regularly perform pandas operations on data frames in excess of 15 million or so rows and I'd love to have access to a progress indicator for particular operations. ...
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Counting the number of elements with the values of x in a vector

... x creates a logical vector which is TRUE at every location that x occurs, and when suming, the logical vector is coerced to numeric which converts TRUE to 1 and FALSE to 0. However, note that for floating point numbers it's better to use something like: sum(abs(numbers - x) < 1e-6). ...
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What are the advantages of using a schema-free database like MongoDB compared to a relational databa

I'm used to using relational databases like MySQL or PostgreSQL, and combined with MVC frameworks such as Symfony, RoR or Django, and I think it works great. ...
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Find size of an array in Perl

... The first and third ways are the same: they evaluate an array in scalar context. I would consider this to be the standard way to get an array's size. The second way actually returns the last index of the array, which is not (usually) ...
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Invoking JavaScript code in an iframe from the parent page

Basically, I have an iframe embedded in a page and the iframe has some JavaScript routines I need to invoke from the parent page. ...
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mysql Foreign key constraint is incorrectly formed error

I have two tables, table1 is the parent table with a column ID and table2 with a column IDFromTable1 (not the actual name) when I put a FK on IDFromTable1 to ID in table1 I get the error Foreign key constraint is incorrectly formed error . I would like to delete table 2 record if tab...
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The model backing the context has changed since the database was created

... I've changed my production db manually and turned off the migration and it works, Thanks – Mohsen Afshin Sep 10 '12 at 21:05 13 ...