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List directory tree structure in python?
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Similar to answers above, but for python3, arguably readable and arguably extensible:
from pathlib import Path
class DisplayablePath(object):
display_filename_prefix_middle = '├──'
display_filename_prefix_last = '└──'
display_parent_prefix_middle = ' '
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Array slices in C#
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Note that only single dimensional and jagged arrays are enumerable, multi dimensional arrays are not.
– Abel
Apr 8 '10 at 9:11
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C# equivalent of the IsNull() function in SQL Server
...QL Server you can use the IsNull() function to check if a value is null, and if it is, return another value. Now I am wondering if there is anything similar in C#.
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Count the number occurrences of a character in a string
...ences of substring sub in the range [start, end]. Optional arguments start and end are interpreted as in slice notation.
>>> sentence = 'Mary had a little lamb'
>>> sentence.count('a')
4
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Adding List.add() another list
...List<T>.AddRange takes an IEnumerable<T>, so you don't need to convert tripDetails into a List<TripDetails>, you can pass it directly, e.g.:
tripDetailsCollection.AddRange(tripDetails);
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Drop unused factor levels in a subsetted data frame
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As a side-effect the function converts the data frame to a list, so the mydf <- droplevels(mydf) solution suggested by Roman Luštrik and Tommy O'Dell below is preferable.
– Johan
May 9 '14 at 10:41
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.htaccess redirect all pages to new domain
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I've used for my Wordpress blog this as .htaccess. It converts http://www.blah.example/asad, http://blah.example/asad, http://www.blah.example2/asad etc, to http://blah.example/asad
Thanks to all other answers I figured this out.
<IfModule mod_rewrite.c>
RewriteEngine On
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Google Maps v2 - set both my location and zoom in
...s, does anyone know how to set google maps up, to open up both my location and in a zoomed-in view?
11 Answers
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Is there any advantage of using map over unordered_map in case of trivial keys?
... in the case of keys with simple types -- I took a look at the interfaces, and didn't find any significant differences that would impact my code.
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Why does (0 < 5 < 3) return true?
I was playing around in jsfiddle.net and I'm curious as to why this returns true?
14 Answers
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