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Sorting Python list based on the length of the string

I want to sort a list of strings based on the string length. I tried to use sort as follows, but it doesn't seem to give me correct result. ...
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Programmatically Lighten or Darken a hex color (or rgb, and blend colors)

Here is a function I was working on to programmatically lighten or darken a hex color by a specific amount. Just pass in a string like "3F6D2A" for the color ( col ) and a base10 integer ( amt ) for the amount to lighten or darken. To darken, pass in a negative number (i.e. -20 ). ...
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Why do we have map, fmap and liftM?

Why do we have three different functions that do essentially the same thing? 1 Answer ...
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Super-simple example of C# observer/observable with delegates

I recently started digging into C# but I can't by my life figure out how delegates work when implementing the observer/observable pattern in the language. ...
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Convert DateTime to String PHP

I have already researched a lot of site on how can I convert PHP DateTime object to String. I always see "String to DateTime" and not "DateTime to String" ...
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Why are Oracle table/column/index names limited to 30 characters?

I can understand that many years ago there would be this kind of limitation, but nowadays surely this limit could easily be increased. We have naming conventions for objects, but there is always a case that turns up where we hit this limit - especially in naming foreign keys. ...
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Python: Get the first character of the first string in a list?

How would I get the first character from the first string in a list in Python? 4 Answers ...
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How to check if an email address exists without sending an email?

I have come across this PHP code to check email address using SMTP without sending an email . 14 Answers ...
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Secondary axis with twinx(): how to add to legend?

I have a plot with two y-axes, using twinx() . I also give labels to the lines, and want to show them with legend() , but I only succeed to get the labels of one axis in the legend: ...
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Vim Insert Mode on Mac OS X

Apparently Mac keyboards don't have an Insert key (or maybe they do but I can't find it). How can I get to insert mode in vim on a Mac? ...